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Merge branch 'akpm' (patches from Andrew) 

Pull updates from Andrew Morton:
 "Most of -mm and quite a number of other subsystems: hotfixes, scripts,
  ocfs2, misc, lib, binfmt, init, reiserfs, exec, dma-mapping, kcov.

  MM is fairly quiet this time.  Holidays, I assume"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
  kcov: ignore fault-inject and stacktrace
  include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc()
  execve: warn if process starts with executable stack
  reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
  init/main.c: fix misleading "This architecture does not have kernel memory protection" message
  init/main.c: fix quoted value handling in unknown_bootoption
  init/main.c: remove unnecessary repair_env_string in do_initcall_level
  init/main.c: log arguments and environment passed to init
  fs/binfmt_elf.c: coredump: allow process with empty address space to coredump
  fs/binfmt_elf.c: coredump: delete duplicated overflow check
  fs/binfmt_elf.c: coredump: allocate core ELF header on stack
  fs/binfmt_elf.c: make BAD_ADDR() unlikely
  fs/binfmt_elf.c: better codegen around current->mm
  fs/binfmt_elf.c: don't copy ELF header around
  fs/binfmt_elf.c: fix ->start_code calculation
  fs/binfmt_elf.c: smaller code generation around auxv vector fill
  lib/find_bit.c: uninline helper _find_next_bit()
  lib/find_bit.c: join _find_next_bit{_le}
  uapi: rename ext2_swab() to swab() and share globally in swab.h
  lib/scatterlist.c: adjust indentation in __sg_alloc_table
  ...
This commit is contained in:
Linus Torvalds 2020-01-31 12:16:36 -08:00
Родитель ddaefe8947 43e76af85f
Коммит 7eec11d3a7
136 изменённых файлов: 2722 добавлений и 1291 удалений
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12
Documentation/admin-guide/kernel-parameters.txt
Просмотреть файл

@ -834,6 +834,18 @@
dump out devices still on the deferred probe list after
retrying.
dfltcc= [HW,S390]
Format: { on | off | def_only | inf_only | always }
on: s390 zlib hardware support for compression on
level 1 and decompression (default)
off: No s390 zlib hardware support
def_only: s390 zlib hardware support for deflate
only (compression on level 1)
inf_only: s390 zlib hardware support for inflate
only (decompression)
always: Same as 'on' but ignores the selected compression
level always using hardware support (used for debugging)
dhash_entries= [KNL]
Set number of hash buckets for dentry cache.

1
Documentation/core-api/index.rst
Просмотреть файл

@ -31,6 +31,7 @@ Core utilities
generic-radix-tree
memory-allocation
mm-api
pin_user_pages
gfp_mask-from-fs-io
timekeeping
boot-time-mm

232
Documentation/core-api/pin_user_pages.rst Normal file
Просмотреть файл

@ -0,0 +1,232 @@
.. SPDX-License-Identifier: GPL-2.0
====================================================
pin_user_pages() and related calls
====================================================
.. contents:: :local:
Overview
========
This document describes the following functions::
pin_user_pages()
pin_user_pages_fast()
pin_user_pages_remote()
Basic description of FOLL_PIN
=============================
FOLL_PIN and FOLL_LONGTERM are flags that can be passed to the get_user_pages*()
("gup") family of functions. FOLL_PIN has significant interactions and
interdependencies with FOLL_LONGTERM, so both are covered here.
FOLL_PIN is internal to gup, meaning that it should not appear at the gup call
sites. This allows the associated wrapper functions (pin_user_pages*() and
others) to set the correct combination of these flags, and to check for problems
as well.
FOLL_LONGTERM, on the other hand, *is* allowed to be set at the gup call sites.
This is in order to avoid creating a large number of wrapper functions to cover
all combinations of get*(), pin*(), FOLL_LONGTERM, and more. Also, the
pin_user_pages*() APIs are clearly distinct from the get_user_pages*() APIs, so
that's a natural dividing line, and a good point to make separate wrapper calls.
In other words, use pin_user_pages*() for DMA-pinned pages, and
get_user_pages*() for other cases. There are four cases described later on in
this document, to further clarify that concept.
FOLL_PIN and FOLL_GET are mutually exclusive for a given gup call. However,
multiple threads and call sites are free to pin the same struct pages, via both
FOLL_PIN and FOLL_GET. It's just the call site that needs to choose one or the
other, not the struct page(s).
The FOLL_PIN implementation is nearly the same as FOLL_GET, except that FOLL_PIN
uses a different reference counting technique.
FOLL_PIN is a prerequisite to FOLL_LONGTERM. Another way of saying that is,
FOLL_LONGTERM is a specific case, more restrictive case of FOLL_PIN.
Which flags are set by each wrapper
===================================
For these pin_user_pages*() functions, FOLL_PIN is OR'd in with whatever gup
flags the caller provides. The caller is required to pass in a non-null struct
pages* array, and the function then pin pages by incrementing each by a special
value. For now, that value is +1, just like get_user_pages*().::
Function
--------
pin_user_pages FOLL_PIN is always set internally by this function.
pin_user_pages_fast FOLL_PIN is always set internally by this function.
pin_user_pages_remote FOLL_PIN is always set internally by this function.
For these get_user_pages*() functions, FOLL_GET might not even be specified.
Behavior is a little more complex than above. If FOLL_GET was *not* specified,
but the caller passed in a non-null struct pages* array, then the function
sets FOLL_GET for you, and proceeds to pin pages by incrementing the refcount
of each page by +1.::
Function
--------
get_user_pages FOLL_GET is sometimes set internally by this function.
get_user_pages_fast FOLL_GET is sometimes set internally by this function.
get_user_pages_remote FOLL_GET is sometimes set internally by this function.
Tracking dma-pinned pages
=========================
Some of the key design constraints, and solutions, for tracking dma-pinned
pages:
* An actual reference count, per struct page, is required. This is because
multiple processes may pin and unpin a page.
* False positives (reporting that a page is dma-pinned, when in fact it is not)
are acceptable, but false negatives are not.
* struct page may not be increased in size for this, and all fields are already
used.
* Given the above, we can overload the page->_refcount field by using, sort of,
the upper bits in that field for a dma-pinned count. "Sort of", means that,
rather than dividing page->_refcount into bit fields, we simple add a medium-
large value (GUP_PIN_COUNTING_BIAS, initially chosen to be 1024: 10 bits) to
page->_refcount. This provides fuzzy behavior: if a page has get_page() called
on it 1024 times, then it will appear to have a single dma-pinned count.
And again, that's acceptable.
This also leads to limitations: there are only 31-10==21 bits available for a
counter that increments 10 bits at a time.
TODO: for 1GB and larger huge pages, this is cutting it close. That's because
when pin_user_pages() follows such pages, it increments the head page by "1"
(where "1" used to mean "+1" for get_user_pages(), but now means "+1024" for
pin_user_pages()) for each tail page. So if you have a 1GB huge page:
* There are 256K (18 bits) worth of 4 KB tail pages.
* There are 21 bits available to count up via GUP_PIN_COUNTING_BIAS (that is,
10 bits at a time)
* There are 21 - 18 == 3 bits available to count. Except that there aren't,
because you need to allow for a few normal get_page() calls on the head page,
as well. Fortunately, the approach of using addition, rather than "hard"
bitfields, within page->_refcount, allows for sharing these bits gracefully.
But we're still looking at about 8 references.
This, however, is a missing feature more than anything else, because it's easily
solved by addressing an obvious inefficiency in the original get_user_pages()
approach of retrieving pages: stop treating all the pages as if they were
PAGE_SIZE. Retrieve huge pages as huge pages. The callers need to be aware of
this, so some work is required. Once that's in place, this limitation mostly
disappears from view, because there will be ample refcounting range available.
* Callers must specifically request "dma-pinned tracking of pages". In other
words, just calling get_user_pages() will not suffice; a new set of functions,
pin_user_page() and related, must be used.
FOLL_PIN, FOLL_GET, FOLL_LONGTERM: when to use which flags
==========================================================
Thanks to Jan Kara, Vlastimil Babka and several other -mm people, for describing
these categories:
CASE 1: Direct IO (DIO)
-----------------------
There are GUP references to pages that are serving
as DIO buffers. These buffers are needed for a relatively short time (so they
are not "long term"). No special synchronization with page_mkclean() or
munmap() is provided. Therefore, flags to set at the call site are: ::
FOLL_PIN
...but rather than setting FOLL_PIN directly, call sites should use one of
the pin_user_pages*() routines that set FOLL_PIN.
CASE 2: RDMA
------------
There are GUP references to pages that are serving as DMA
buffers. These buffers are needed for a long time ("long term"). No special
synchronization with page_mkclean() or munmap() is provided. Therefore, flags
to set at the call site are: ::
FOLL_PIN | FOLL_LONGTERM
NOTE: Some pages, such as DAX pages, cannot be pinned with longterm pins. That's
because DAX pages do not have a separate page cache, and so "pinning" implies
locking down file system blocks, which is not (yet) supported in that way.
CASE 3: Hardware with page faulting support
-------------------------------------------
Here, a well-written driver doesn't normally need to pin pages at all. However,
if the driver does choose to do so, it can register MMU notifiers for the range,
and will be called back upon invalidation. Either way (avoiding page pinning, or
using MMU notifiers to unpin upon request), there is proper synchronization with
both filesystem and mm (page_mkclean(), munmap(), etc).
Therefore, neither flag needs to be set.
In this case, ideally, neither get_user_pages() nor pin_user_pages() should be
called. Instead, the software should be written so that it does not pin pages.
This allows mm and filesystems to operate more efficiently and reliably.
CASE 4: Pinning for struct page manipulation only
-------------------------------------------------
Here, normal GUP calls are sufficient, so neither flag needs to be set.
page_dma_pinned(): the whole point of pinning
=============================================
The whole point of marking pages as "DMA-pinned" or "gup-pinned" is to be able
to query, "is this page DMA-pinned?" That allows code such as page_mkclean()
(and file system writeback code in general) to make informed decisions about
what to do when a page cannot be unmapped due to such pins.
What to do in those cases is the subject of a years-long series of discussions
and debates (see the References at the end of this document). It's a TODO item
here: fill in the details once that's worked out. Meanwhile, it's safe to say
that having this available: ::
static inline bool page_dma_pinned(struct page *page)
...is a prerequisite to solving the long-running gup+DMA problem.
Another way of thinking about FOLL_GET, FOLL_PIN, and FOLL_LONGTERM
===================================================================
Another way of thinking about these flags is as a progression of restrictions:
FOLL_GET is for struct page manipulation, without affecting the data that the
struct page refers to. FOLL_PIN is a *replacement* for FOLL_GET, and is for
short term pins on pages whose data *will* get accessed. As such, FOLL_PIN is
a "more severe" form of pinning. And finally, FOLL_LONGTERM is an even more
restrictive case that has FOLL_PIN as a prerequisite: this is for pages that
will be pinned longterm, and whose data will be accessed.
Unit testing
============
This file::
tools/testing/selftests/vm/gup_benchmark.c
has the following new calls to exercise the new pin*() wrapper functions:
* PIN_FAST_BENCHMARK (./gup_benchmark -a)
* PIN_BENCHMARK (./gup_benchmark -b)
You can monitor how many total dma-pinned pages have been acquired and released
since the system was booted, via two new /proc/vmstat entries: ::
/proc/vmstat/nr_foll_pin_requested
/proc/vmstat/nr_foll_pin_requested
Those are both going to show zero, unless CONFIG_DEBUG_VM is set. This is
because there is a noticeable performance drop in unpin_user_page(), when they
are activated.
References
==========
* `Some slow progress on get_user_pages() (Apr 2, 2019) <https://lwn.net/Articles/784574/>`_
* `DMA and get_user_pages() (LPC: Dec 12, 2018) <https://lwn.net/Articles/774411/>`_
* `The trouble with get_user_pages() (Apr 30, 2018) <https://lwn.net/Articles/753027/>`_
John Hubbard, October, 2019

13
Documentation/vm/zswap.rst
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@ -130,6 +130,19 @@ checking for the same-value filled pages during store operation. However, the
existing pages which are marked as same-value filled pages remain stored
unchanged in zswap until they are either loaded or invalidated.
To prevent zswap from shrinking pool when zswap is full and there's a high
pressure on swap (this will result in flipping pages in and out zswap pool
without any real benefit but with a performance drop for the system), a
special parameter has been introduced to implement a sort of hysteresis to
refuse taking pages into zswap pool until it has sufficient space if the limit
has been hit. To set the threshold at which zswap would start accepting pages
again after it became full, use the sysfs ``accept_threhsold_percent``
attribute, e. g.::
echo 80 > /sys/module/zswap/parameters/accept_threhsold_percent
Setting this parameter to 100 will disable the hysteresis.
A debugfs interface is provided for various statistic about pool size, number
of pages stored, same-value filled pages and various counters for the reasons
pages are rejected.

10
arch/powerpc/mm/book3s64/iommu_api.c
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@ -103,7 +103,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, unsigned long ua,
for (entry = 0; entry < entries; entry += chunk) {
unsigned long n = min(entries - entry, chunk);
ret = get_user_pages(ua + (entry << PAGE_SHIFT), n,
ret = pin_user_pages(ua + (entry << PAGE_SHIFT), n,
FOLL_WRITE | FOLL_LONGTERM,
mem->hpages + entry, NULL);
if (ret == n) {
@ -167,9 +167,8 @@ good_exit:
return 0;
free_exit:
/* free the reference taken */
for (i = 0; i < pinned; i++)
put_page(mem->hpages[i]);
/* free the references taken */
unpin_user_pages(mem->hpages, pinned);
vfree(mem->hpas);
kfree(mem);
@ -215,7 +214,8 @@ static void mm_iommu_unpin(struct mm_iommu_table_group_mem_t *mem)
if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY)
SetPageDirty(page);
put_page(page);
unpin_user_page(page);
mem->hpas[i] = 0;
}
}

8
arch/s390/boot/compressed/decompressor.c
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@ -30,13 +30,13 @@ extern unsigned char _compressed_start[];
extern unsigned char _compressed_end[];
#ifdef CONFIG_HAVE_KERNEL_BZIP2
#define HEAP_SIZE 0x400000
#define BOOT_HEAP_SIZE 0x400000
#else
#define HEAP_SIZE 0x10000
#define BOOT_HEAP_SIZE 0x10000
#endif
static unsigned long free_mem_ptr = (unsigned long) _end;
static unsigned long free_mem_end_ptr = (unsigned long) _end + HEAP_SIZE;
static unsigned long free_mem_end_ptr = (unsigned long) _end + BOOT_HEAP_SIZE;
#ifdef CONFIG_KERNEL_GZIP
#include "../../../../lib/decompress_inflate.c"
@ -62,7 +62,7 @@ static unsigned long free_mem_end_ptr = (unsigned long) _end + HEAP_SIZE;
#include "../../../../lib/decompress_unxz.c"
#endif
#define decompress_offset ALIGN((unsigned long)_end + HEAP_SIZE, PAGE_SIZE)
#define decompress_offset ALIGN((unsigned long)_end + BOOT_HEAP_SIZE, PAGE_SIZE)
unsigned long mem_safe_offset(void)
{

14
arch/s390/boot/ipl_parm.c
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@ -14,6 +14,7 @@
char __bootdata(early_command_line)[COMMAND_LINE_SIZE];
struct ipl_parameter_block __bootdata_preserved(ipl_block);
int __bootdata_preserved(ipl_block_valid);
unsigned int __bootdata_preserved(zlib_dfltcc_support) = ZLIB_DFLTCC_FULL;
unsigned long __bootdata(vmalloc_size) = VMALLOC_DEFAULT_SIZE;
unsigned long __bootdata(memory_end);
@ -229,6 +230,19 @@ void parse_boot_command_line(void)
if (!strcmp(param, "vmalloc") && val)
vmalloc_size = round_up(memparse(val, NULL), PAGE_SIZE);
if (!strcmp(param, "dfltcc")) {
if (!strcmp(val, "off"))
zlib_dfltcc_support = ZLIB_DFLTCC_DISABLED;
else if (!strcmp(val, "on"))
zlib_dfltcc_support = ZLIB_DFLTCC_FULL;
else if (!strcmp(val, "def_only"))
zlib_dfltcc_support = ZLIB_DFLTCC_DEFLATE_ONLY;
else if (!strcmp(val, "inf_only"))
zlib_dfltcc_support = ZLIB_DFLTCC_INFLATE_ONLY;
else if (!strcmp(val, "always"))
zlib_dfltcc_support = ZLIB_DFLTCC_FULL_DEBUG;
}
if (!strcmp(param, "noexec")) {
rc = kstrtobool(val, &enabled);
if (!rc && !enabled)

7
arch/s390/include/asm/setup.h
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@ -79,6 +79,13 @@ struct parmarea {
char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */
};
extern unsigned int zlib_dfltcc_support;
#define ZLIB_DFLTCC_DISABLED 0
#define ZLIB_DFLTCC_FULL 1
#define ZLIB_DFLTCC_DEFLATE_ONLY 2
#define ZLIB_DFLTCC_INFLATE_ONLY 3
#define ZLIB_DFLTCC_FULL_DEBUG 4
extern int noexec_disabled;
extern int memory_end_set;
extern unsigned long memory_end;

14
arch/s390/kernel/setup.c
Просмотреть файл

@ -111,6 +111,8 @@ unsigned long __bootdata_preserved(__etext_dma);
unsigned long __bootdata_preserved(__sdma);
unsigned long __bootdata_preserved(__edma);
unsigned long __bootdata_preserved(__kaslr_offset);
unsigned int __bootdata_preserved(zlib_dfltcc_support);
EXPORT_SYMBOL(zlib_dfltcc_support);
unsigned long VMALLOC_START;
EXPORT_SYMBOL(VMALLOC_START);
@ -759,14 +761,6 @@ static void __init free_mem_detect_info(void)
memblock_free(start, size);
}
static void __init memblock_physmem_add(phys_addr_t start, phys_addr_t size)
{
memblock_dbg("memblock_physmem_add: [%#016llx-%#016llx]\n",
start, start + size - 1);
memblock_add_range(&memblock.memory, start, size, 0, 0);
memblock_add_range(&memblock.physmem, start, size, 0, 0);
}
static const char * __init get_mem_info_source(void)
{
switch (mem_detect.info_source) {
@ -791,8 +785,10 @@ static void __init memblock_add_mem_detect_info(void)
get_mem_info_source(), mem_detect.info_source);
/* keep memblock lists close to the kernel */
memblock_set_bottom_up(true);
for_each_mem_detect_block(i, &start, &end)
for_each_mem_detect_block(i, &start, &end) {
memblock_add(start, end - start);
memblock_physmem_add(start, end - start);
}
memblock_set_bottom_up(false);
memblock_dump_all();
}

34
drivers/acpi/thermal.c
Просмотреть файл

@ -27,6 +27,7 @@
#include <linux/acpi.h>
#include <linux/workqueue.h>
#include <linux/uaccess.h>
#include <linux/units.h>
#define PREFIX "ACPI: "
@ -172,7 +173,7 @@ struct acpi_thermal {
struct acpi_handle_list devices;
struct thermal_zone_device *thermal_zone;
int tz_enabled;
int kelvin_offset;
int kelvin_offset; /* in millidegrees */
struct work_struct thermal_check_work;
};
@ -297,7 +298,8 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
if (crt == -1) {
tz->trips.critical.flags.valid = 0;
} else if (crt > 0) {
unsigned long crt_k = CELSIUS_TO_DECI_KELVIN(crt);
unsigned long crt_k = celsius_to_deci_kelvin(crt);
/*
* Allow override critical threshold
*/
@ -333,7 +335,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
if (psv == -1) {
status = AE_SUPPORT;
} else if (psv > 0) {
tmp = CELSIUS_TO_DECI_KELVIN(psv);
tmp = celsius_to_deci_kelvin(psv);
status = AE_OK;
} else {
status = acpi_evaluate_integer(tz->device->handle,
@ -413,7 +415,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
break;
if (i == 1)
tz->trips.active[0].temperature =
CELSIUS_TO_DECI_KELVIN(act);
celsius_to_deci_kelvin(act);
else
/*
* Don't allow override higher than
@ -421,9 +423,9 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
*/
tz->trips.active[i - 1].temperature =
(tz->trips.active[i - 2].temperature <
CELSIUS_TO_DECI_KELVIN(act) ?
celsius_to_deci_kelvin(act) ?
tz->trips.active[i - 2].temperature :
CELSIUS_TO_DECI_KELVIN(act));
celsius_to_deci_kelvin(act));
break;
} else {
tz->trips.active[i].temperature = tmp;
@ -519,7 +521,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, int *temp)
if (result)
return result;
*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(tz->temperature,
*temp = deci_kelvin_to_millicelsius_with_offset(tz->temperature,
tz->kelvin_offset);
return 0;
}
@ -624,7 +626,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
if (tz->trips.critical.flags.valid) {
if (!trip) {
*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
*temp = deci_kelvin_to_millicelsius_with_offset(
tz->trips.critical.temperature,
tz->kelvin_offset);
return 0;
@ -634,7 +636,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
if (tz->trips.hot.flags.valid) {
if (!trip) {
*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
*temp = deci_kelvin_to_millicelsius_with_offset(
tz->trips.hot.temperature,
tz->kelvin_offset);
return 0;
@ -644,7 +646,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
if (tz->trips.passive.flags.valid) {
if (!trip) {
*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
*temp = deci_kelvin_to_millicelsius_with_offset(
tz->trips.passive.temperature,
tz->kelvin_offset);
return 0;
@ -655,7 +657,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
tz->trips.active[i].flags.valid; i++) {
if (!trip) {
*temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
*temp = deci_kelvin_to_millicelsius_with_offset(
tz->trips.active[i].temperature,
tz->kelvin_offset);
return 0;
@ -672,7 +674,7 @@ static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
struct acpi_thermal *tz = thermal->devdata;
if (tz->trips.critical.flags.valid) {
*temperature = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
*temperature = deci_kelvin_to_millicelsius_with_offset(
tz->trips.critical.temperature,
tz->kelvin_offset);
return 0;
@ -692,7 +694,7 @@ static int thermal_get_trend(struct thermal_zone_device *thermal,
if (type == THERMAL_TRIP_ACTIVE) {
int trip_temp;
int temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(
int temp = deci_kelvin_to_millicelsius_with_offset(
tz->temperature, tz->kelvin_offset);
if (thermal_get_trip_temp(thermal, trip, &trip_temp))
return -EINVAL;
@ -1043,9 +1045,9 @@ static void acpi_thermal_guess_offset(struct acpi_thermal *tz)
{
if (tz->trips.critical.flags.valid &&
(tz->trips.critical.temperature % 5) == 1)
tz->kelvin_offset = 2731;
tz->kelvin_offset = 273100;
else
tz->kelvin_offset = 2732;
tz->kelvin_offset = 273200;
}
static void acpi_thermal_check_fn(struct work_struct *work)
@ -1087,7 +1089,7 @@ static int acpi_thermal_add(struct acpi_device *device)
INIT_WORK(&tz->thermal_check_work, acpi_thermal_check_fn);
pr_info(PREFIX "%s [%s] (%ld C)\n", acpi_device_name(device),
acpi_device_bid(device), DECI_KELVIN_TO_CELSIUS(tz->temperature));
acpi_device_bid(device), deci_kelvin_to_celsius(tz->temperature));
goto end;
free_memory:

25
drivers/base/memory.c
Просмотреть файл

@ -70,20 +70,6 @@ void unregister_memory_notifier(struct notifier_block *nb)
}
EXPORT_SYMBOL(unregister_memory_notifier);
static ATOMIC_NOTIFIER_HEAD(memory_isolate_chain);
int register_memory_isolate_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_register(&memory_isolate_chain, nb);
}
EXPORT_SYMBOL(register_memory_isolate_notifier);
void unregister_memory_isolate_notifier(struct notifier_block *nb)
{
atomic_notifier_chain_unregister(&memory_isolate_chain, nb);
}
EXPORT_SYMBOL(unregister_memory_isolate_notifier);
static void memory_block_release(struct device *dev)
{
struct memory_block *mem = to_memory_block(dev);
@ -175,11 +161,6 @@ int memory_notify(unsigned long val, void *v)
return blocking_notifier_call_chain(&memory_chain, val, v);
}
int memory_isolate_notify(unsigned long val, void *v)
{
return atomic_notifier_call_chain(&memory_isolate_chain, val, v);
}
/*
* The probe routines leave the pages uninitialized, just as the bootmem code
* does. Make sure we do not access them, but instead use only information from
@ -225,7 +206,7 @@ static bool pages_correctly_probed(unsigned long start_pfn)
*/
static int
memory_block_action(unsigned long start_section_nr, unsigned long action,
int online_type)
int online_type, int nid)
{
unsigned long start_pfn;
unsigned long nr_pages = PAGES_PER_SECTION * sections_per_block;
@ -238,7 +219,7 @@ memory_block_action(unsigned long start_section_nr, unsigned long action,
if (!pages_correctly_probed(start_pfn))
return -EBUSY;
ret = online_pages(start_pfn, nr_pages, online_type);
ret = online_pages(start_pfn, nr_pages, online_type, nid);
break;
case MEM_OFFLINE:
ret = offline_pages(start_pfn, nr_pages);
@ -264,7 +245,7 @@ static int memory_block_change_state(struct memory_block *mem,
mem->state = MEM_GOING_OFFLINE;
ret = memory_block_action(mem->start_section_nr, to_state,
mem->online_type);
mem->online_type, mem->nid);
mem->state = ret ? from_state_req : to_state;

10
drivers/block/zram/zram_drv.c
Просмотреть файл

@ -207,14 +207,17 @@ static inline void zram_fill_page(void *ptr, unsigned long len,
static bool page_same_filled(void *ptr, unsigned long *element)
{
unsigned int pos;
unsigned long *page;
unsigned long val;
unsigned int pos, last_pos = PAGE_SIZE / sizeof(*page) - 1;
page = (unsigned long *)ptr;
val = page[0];
for (pos = 1; pos < PAGE_SIZE / sizeof(*page); pos++) {
if (val != page[last_pos])
return false;
for (pos = 1; pos < last_pos; pos++) {
if (val != page[pos])
return false;
}
@ -626,7 +629,7 @@ static ssize_t writeback_store(struct device *dev,
struct bio bio;
struct bio_vec bio_vec;
struct page *page;
ssize_t ret;
ssize_t ret = len;
int mode;
unsigned long blk_idx = 0;
@ -762,7 +765,6 @@ next:
if (blk_idx)
free_block_bdev(zram, blk_idx);
ret = len;
__free_page(page);
release_init_lock:
up_read(&zram->init_lock);

4
drivers/gpu/drm/via/via_dmablit.c
Просмотреть файл

@ -188,7 +188,7 @@ via_free_sg_info(struct pci_dev *pdev, drm_via_sg_info_t *vsg)
kfree(vsg->desc_pages);
/* fall through */
case dr_via_pages_locked:
put_user_pages_dirty_lock(vsg->pages, vsg->num_pages,
unpin_user_pages_dirty_lock(vsg->pages, vsg->num_pages,
(vsg->direction == DMA_FROM_DEVICE));
/* fall through */
case dr_via_pages_alloc:
@ -239,7 +239,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer)
vsg->pages = vzalloc(array_size(sizeof(struct page *), vsg->num_pages));
if (NULL == vsg->pages)
return -ENOMEM;
ret = get_user_pages_fast((unsigned long)xfer->mem_addr,
ret = pin_user_pages_fast((unsigned long)xfer->mem_addr,
vsg->num_pages,
vsg->direction == DMA_FROM_DEVICE ? FOLL_WRITE : 0,
vsg->pages);

6
drivers/iio/adc/qcom-vadc-common.c
Просмотреть файл

@ -6,6 +6,7 @@
#include <linux/log2.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/units.h>
#include "qcom-vadc-common.h"
@ -236,8 +237,7 @@ static int qcom_vadc_scale_die_temp(const struct vadc_linear_graph *calib_graph,
voltage = 0;
}
voltage -= KELVINMIL_CELSIUSMIL;
*result_mdec = voltage;
*result_mdec = milli_kelvin_to_millicelsius(voltage);
return 0;
}
@ -325,7 +325,7 @@ static int qcom_vadc_scale_hw_calib_die_temp(
{
*result_mdec = qcom_vadc_scale_code_voltage_factor(adc_code,
prescale, data, 2);
*result_mdec -= KELVINMIL_CELSIUSMIL;
*result_mdec = milli_kelvin_to_millicelsius(*result_mdec);
return 0;
}

1
drivers/iio/adc/qcom-vadc-common.h
Просмотреть файл

@ -38,7 +38,6 @@
#define VADC_AVG_SAMPLES_MAX 512
#define ADC5_AVG_SAMPLES_MAX 16
#define KELVINMIL_CELSIUSMIL 273150
#define PMIC5_CHG_TEMP_SCALE_FACTOR 377500
#define PMIC5_SMB_TEMP_CONSTANT 419400
#define PMIC5_SMB_TEMP_SCALE_FACTOR 356

17
drivers/infiniband/core/umem.c
Просмотреть файл

@ -54,7 +54,7 @@ static void __ib_umem_release(struct ib_device *dev, struct ib_umem *umem, int d
for_each_sg_page(umem->sg_head.sgl, &sg_iter, umem->sg_nents, 0) {
page = sg_page_iter_page(&sg_iter);
put_user_pages_dirty_lock(&page, 1, umem->writable && dirty);
unpin_user_pages_dirty_lock(&page, 1, umem->writable && dirty);
}
sg_free_table(&umem->sg_head);
@ -257,16 +257,13 @@ struct ib_umem *ib_umem_get(struct ib_device *device, unsigned long addr,
sg = umem->sg_head.sgl;
while (npages) {
down_read(&mm->mmap_sem);
ret = get_user_pages(cur_base,
ret = pin_user_pages_fast(cur_base,
min_t(unsigned long, npages,
PAGE_SIZE / sizeof (struct page *)),
gup_flags | FOLL_LONGTERM,
page_list, NULL);
if (ret < 0) {
up_read(&mm->mmap_sem);
PAGE_SIZE /
sizeof(struct page *)),
gup_flags | FOLL_LONGTERM, page_list);
if (ret < 0)
goto umem_release;
}
cur_base += ret * PAGE_SIZE;
npages -= ret;
@ -274,8 +271,6 @@ struct ib_umem *ib_umem_get(struct ib_device *device, unsigned long addr,
sg = ib_umem_add_sg_table(sg, page_list, ret,
dma_get_max_seg_size(device->dma_device),
&umem->sg_nents);
up_read(&mm->mmap_sem);
}
sg_mark_end(sg);

11
drivers/infiniband/core/umem_odp.c
Просмотреть файл

@ -293,9 +293,8 @@ EXPORT_SYMBOL(ib_umem_odp_release);
* The function returns -EFAULT if the DMA mapping operation fails. It returns
* -EAGAIN if a concurrent invalidation prevents us from updating the page.
*
* The page is released via put_user_page even if the operation failed. For
* on-demand pinning, the page is released whenever it isn't stored in the
* umem.
* The page is released via put_page even if the operation failed. For on-demand
* pinning, the page is released whenever it isn't stored in the umem.
*/
static int ib_umem_odp_map_dma_single_page(
struct ib_umem_odp *umem_odp,
@ -348,7 +347,7 @@ static int ib_umem_odp_map_dma_single_page(
}
out:
put_user_page(page);
put_page(page);
return ret;
}
@ -458,7 +457,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 user_virt,
ret = -EFAULT;
break;
}
put_user_page(local_page_list[j]);
put_page(local_page_list[j]);
continue;
}
@ -485,7 +484,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 user_virt,
* ib_umem_odp_map_dma_single_page().
*/
if (npages - (j + 1) > 0)
put_user_pages(&local_page_list[j+1],
release_pages(&local_page_list[j+1],
npages - (j + 1));
break;
}

4
drivers/infiniband/hw/hfi1/user_pages.c
Просмотреть файл

@ -106,7 +106,7 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np
int ret;
unsigned int gup_flags = FOLL_LONGTERM | (writable ? FOLL_WRITE : 0);
ret = get_user_pages_fast(vaddr, npages, gup_flags, pages);
ret = pin_user_pages_fast(vaddr, npages, gup_flags, pages);
if (ret < 0)
return ret;
@ -118,7 +118,7 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np
void hfi1_release_user_pages(struct mm_struct *mm, struct page **p,
size_t npages, bool dirty)
{
put_user_pages_dirty_lock(p, npages, dirty);
unpin_user_pages_dirty_lock(p, npages, dirty);
if (mm) { /* during close after signal, mm can be NULL */
atomic64_sub(npages, &mm->pinned_vm);

8
drivers/infiniband/hw/mthca/mthca_memfree.c
Просмотреть файл

@ -472,7 +472,7 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
goto out;
}
ret = get_user_pages_fast(uaddr & PAGE_MASK, 1,
ret = pin_user_pages_fast(uaddr & PAGE_MASK, 1,
FOLL_WRITE | FOLL_LONGTERM, pages);
if (ret < 0)
goto out;
@ -482,7 +482,7 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
ret = pci_map_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
if (ret < 0) {
put_user_page(pages[0]);
unpin_user_page(pages[0]);
goto out;
}
@ -490,7 +490,7 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
mthca_uarc_virt(dev, uar, i));
if (ret) {
pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
put_user_page(sg_page(&db_tab->page[i].mem));
unpin_user_page(sg_page(&db_tab->page[i].mem));
goto out;
}
@ -556,7 +556,7 @@ void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar,
if (db_tab->page[i].uvirt) {
mthca_UNMAP_ICM(dev, mthca_uarc_virt(dev, uar, i), 1);
pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
put_user_page(sg_page(&db_tab->page[i].mem));
unpin_user_page(sg_page(&db_tab->page[i].mem));
}
}

4
drivers/infiniband/hw/qib/qib_user_pages.c
Просмотреть файл

@ -40,7 +40,7 @@
static void __qib_release_user_pages(struct page **p, size_t num_pages,
int dirty)
{
put_user_pages_dirty_lock(p, num_pages, dirty);
unpin_user_pages_dirty_lock(p, num_pages, dirty);
}
/**
@ -108,7 +108,7 @@ int qib_get_user_pages(unsigned long start_page, size_t num_pages,
down_read(&current->mm->mmap_sem);
for (got = 0; got < num_pages; got += ret) {
ret = get_user_pages(start_page + got * PAGE_SIZE,
ret = pin_user_pages(start_page + got * PAGE_SIZE,
num_pages - got,
FOLL_LONGTERM | FOLL_WRITE | FOLL_FORCE,
p + got, NULL);

8
drivers/infiniband/hw/qib/qib_user_sdma.c
Просмотреть файл

@ -317,7 +317,7 @@ static int qib_user_sdma_page_to_frags(const struct qib_devdata *dd,
* the caller can ignore this page.
*/
if (put) {
put_user_page(page);
unpin_user_page(page);
} else {
/* coalesce case */
kunmap(page);
@ -631,7 +631,7 @@ static void qib_user_sdma_free_pkt_frag(struct device *dev,
kunmap(pkt->addr[i].page);
if (pkt->addr[i].put_page)
put_user_page(pkt->addr[i].page);
unpin_user_page(pkt->addr[i].page);
else
__free_page(pkt->addr[i].page);
} else if (pkt->addr[i].kvaddr) {
@ -670,7 +670,7 @@ static int qib_user_sdma_pin_pages(const struct qib_devdata *dd,
else
j = npages;
ret = get_user_pages_fast(addr, j, FOLL_LONGTERM, pages);
ret = pin_user_pages_fast(addr, j, FOLL_LONGTERM, pages);
if (ret != j) {
i = 0;
j = ret;
@ -706,7 +706,7 @@ static int qib_user_sdma_pin_pages(const struct qib_devdata *dd,
/* if error, return all pages not managed by pkt */
free_pages:
while (i < j)
put_user_page(pages[i++]);
unpin_user_page(pages[i++]);
done:
return ret;

4
drivers/infiniband/hw/usnic/usnic_uiom.c
Просмотреть файл

@ -75,7 +75,7 @@ static void usnic_uiom_put_pages(struct list_head *chunk_list, int dirty)
for_each_sg(chunk->page_list, sg, chunk->nents, i) {
page = sg_page(sg);
pa = sg_phys(sg);
put_user_pages_dirty_lock(&page, 1, dirty);
unpin_user_pages_dirty_lock(&page, 1, dirty);
usnic_dbg("pa: %pa\n", &pa);
}
kfree(chunk);
@ -141,7 +141,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
ret = 0;
while (npages) {
ret = get_user_pages(cur_base,
ret = pin_user_pages(cur_base,
min_t(unsigned long, npages,
PAGE_SIZE / sizeof(struct page *)),
gup_flags | FOLL_LONGTERM,

4
drivers/infiniband/sw/siw/siw_mem.c
Просмотреть файл

@ -63,7 +63,7 @@ struct siw_mem *siw_mem_id2obj(struct siw_device *sdev, int stag_index)
static void siw_free_plist(struct siw_page_chunk *chunk, int num_pages,
bool dirty)
{
put_user_pages_dirty_lock(chunk->plist, num_pages, dirty);
unpin_user_pages_dirty_lock(chunk->plist, num_pages, dirty);
}
void siw_umem_release(struct siw_umem *umem, bool dirty)
@ -426,7 +426,7 @@ struct siw_umem *siw_umem_get(u64 start, u64 len, bool writable)
while (nents) {
struct page **plist = &umem->page_chunk[i].plist[got];
rv = get_user_pages(first_page_va, nents,
rv = pin_user_pages(first_page_va, nents,
foll_flags | FOLL_LONGTERM,
plist, NULL);
if (rv < 0)

8
drivers/media/v4l2-core/videobuf-dma-sg.c
Просмотреть файл

@ -183,12 +183,12 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
dprintk(1, "init user [0x%lx+0x%lx => %d pages]\n",
data, size, dma->nr_pages);
err = get_user_pages(data & PAGE_MASK, dma->nr_pages,
err = pin_user_pages(data & PAGE_MASK, dma->nr_pages,
flags | FOLL_LONGTERM, dma->pages, NULL);
if (err != dma->nr_pages) {
dma->nr_pages = (err >= 0) ? err : 0;
dprintk(1, "get_user_pages: err=%d [%d]\n", err,
dprintk(1, "pin_user_pages: err=%d [%d]\n", err,
dma->nr_pages);
return err < 0 ? err : -EINVAL;
}
@ -349,8 +349,8 @@ int videobuf_dma_free(struct videobuf_dmabuf *dma)
BUG_ON(dma->sglen);
if (dma->pages) {
for (i = 0; i < dma->nr_pages; i++)
put_page(dma->pages[i]);
unpin_user_pages_dirty_lock(dma->pages, dma->nr_pages,
dma->direction == DMA_FROM_DEVICE);
kfree(dma->pages);
dma->pages = NULL;
}

1
drivers/net/ethernet/broadcom/bnx2x/bnx2x_init.h
Просмотреть файл

@ -296,7 +296,6 @@ static inline void bnx2x_dcb_config_qm(struct bnx2x *bp, enum cos_mode mode,
* possible, the driver should only write the valid vnics into the internal
* ram according to the appropriate port mode.
*/
#define BITS_TO_BYTES(x) ((x)/8)
/* CMNG constants, as derived from system spec calculations */

3
drivers/net/wireless/intel/iwlegacy/4965-mac.c
Просмотреть файл

@ -27,6 +27,7 @@
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include <linux/units.h>
#include <net/mac80211.h>
@ -6468,7 +6469,7 @@ il4965_set_hw_params(struct il_priv *il)
il->hw_params.valid_rx_ant = il->cfg->valid_rx_ant;
il->hw_params.ct_kill_threshold =
CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY);
celsius_to_kelvin(CT_KILL_THRESHOLD_LEGACY);
il->hw_params.sens = &il4965_sensitivity;
il->hw_params.beacon_time_tsf_bits = IL4965_EXT_BEACON_TIME_POS;

17
drivers/net/wireless/intel/iwlegacy/4965.c
Просмотреть файл

@ -17,6 +17,7 @@
#include <linux/sched.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/units.h>
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include <asm/unaligned.h>
@ -1104,7 +1105,7 @@ il4965_fill_txpower_tbl(struct il_priv *il, u8 band, u16 channel, u8 is_ht40,
/* get current temperature (Celsius) */
current_temp = max(il->temperature, IL_TX_POWER_TEMPERATURE_MIN);
current_temp = min(il->temperature, IL_TX_POWER_TEMPERATURE_MAX);
current_temp = KELVIN_TO_CELSIUS(current_temp);
current_temp = kelvin_to_celsius(current_temp);
/* select thermal txpower adjustment params, based on channel group
* (same frequency group used for mimo txatten adjustment) */
@ -1610,8 +1611,8 @@ il4965_hw_get_temperature(struct il_priv *il)
temperature =
(temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
D_TEMP("Calibrated temperature: %dK, %dC\n", temperature,
KELVIN_TO_CELSIUS(temperature));
D_TEMP("Calibrated temperature: %dK, %ldC\n", temperature,
kelvin_to_celsius(temperature));
return temperature;
}
@ -1670,12 +1671,12 @@ il4965_temperature_calib(struct il_priv *il)
if (il->temperature != temp) {
if (il->temperature)
D_TEMP("Temperature changed " "from %dC to %dC\n",
KELVIN_TO_CELSIUS(il->temperature),
KELVIN_TO_CELSIUS(temp));
D_TEMP("Temperature changed " "from %ldC to %ldC\n",
kelvin_to_celsius(il->temperature),
kelvin_to_celsius(temp));
else
D_TEMP("Temperature " "initialized to %dC\n",
KELVIN_TO_CELSIUS(temp));
D_TEMP("Temperature " "initialized to %ldC\n",
kelvin_to_celsius(temp));
}
il->temperature = temp;

3
drivers/net/wireless/intel/iwlegacy/common.h
Просмотреть файл

@ -779,9 +779,6 @@ struct il_sensitivity_ranges {
u16 nrg_th_cca;
};
#define KELVIN_TO_CELSIUS(x) ((x)-273)
#define CELSIUS_TO_KELVIN(x) ((x)+273)
/**
* struct il_hw_params
* @bcast_id: f/w broadcast station ID

5
drivers/net/wireless/intel/iwlwifi/dvm/dev.h
Просмотреть файл

@ -237,11 +237,6 @@ struct iwl_sensitivity_ranges {
u16 nrg_th_cca;
};
#define KELVIN_TO_CELSIUS(x) ((x)-273)
#define CELSIUS_TO_KELVIN(x) ((x)+273)
/******************************************************************************
*
* Functions implemented in core module which are forward declared here

6
drivers/net/wireless/intel/iwlwifi/dvm/devices.c
Просмотреть файл

@ -10,6 +10,8 @@
*
*****************************************************************************/
#include <linux/units.h>
/*
* DVM device-specific data & functions
*/
@ -345,7 +347,7 @@ static s32 iwl_temp_calib_to_offset(struct iwl_priv *priv)
static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
{
const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
s32 threshold = (s32)celsius_to_kelvin(CT_KILL_THRESHOLD_LEGACY) -
iwl_temp_calib_to_offset(priv);
priv->hw_params.ct_kill_threshold = threshold * volt2temp_coef;
@ -381,7 +383,7 @@ static void iwl5150_temperature(struct iwl_priv *priv)
vt = le32_to_cpu(priv->statistics.common.temperature);
vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
/* now vt hold the temperature in Kelvin */
priv->temperature = KELVIN_TO_CELSIUS(vt);
priv->temperature = kelvin_to_celsius(vt);
iwl_tt_handler(priv);
}

6
drivers/nvdimm/pmem.c
Просмотреть файл

@ -337,13 +337,7 @@ static void pmem_release_disk(void *__pmem)
put_disk(pmem->disk);
}
static void pmem_pagemap_page_free(struct page *page)
{
wake_up_var(&page->_refcount);
}
static const struct dev_pagemap_ops fsdax_pagemap_ops = {
.page_free = pmem_pagemap_page_free,
.kill = pmem_pagemap_kill,
.cleanup = pmem_pagemap_cleanup,
};

13
drivers/nvme/host/hwmon.c
Просмотреть файл

@ -5,14 +5,11 @@
*/
#include <linux/hwmon.h>
#include <linux/units.h>
#include <asm/unaligned.h>
#include "nvme.h"
/* These macros should be moved to linux/temperature.h */
#define MILLICELSIUS_TO_KELVIN(t) DIV_ROUND_CLOSEST((t) + 273150, 1000)
#define KELVIN_TO_MILLICELSIUS(t) ((t) * 1000L - 273150)
struct nvme_hwmon_data {
struct nvme_ctrl *ctrl;
struct nvme_smart_log log;
@ -35,7 +32,7 @@ static int nvme_get_temp_thresh(struct nvme_ctrl *ctrl, int sensor, bool under,
return -EIO;
if (ret < 0)
return ret;
*temp = KELVIN_TO_MILLICELSIUS(status & NVME_TEMP_THRESH_MASK);
*temp = kelvin_to_millicelsius(status & NVME_TEMP_THRESH_MASK);
return 0;
}
@ -46,7 +43,7 @@ static int nvme_set_temp_thresh(struct nvme_ctrl *ctrl, int sensor, bool under,
unsigned int threshold = sensor << NVME_TEMP_THRESH_SELECT_SHIFT;
int ret;
temp = MILLICELSIUS_TO_KELVIN(temp);
temp = millicelsius_to_kelvin(temp);
threshold |= clamp_val(temp, 0, NVME_TEMP_THRESH_MASK);
if (under)
@ -88,7 +85,7 @@ static int nvme_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
case hwmon_temp_min:
return nvme_get_temp_thresh(data->ctrl, channel, true, val);
case hwmon_temp_crit:
*val = KELVIN_TO_MILLICELSIUS(data->ctrl->cctemp);
*val = kelvin_to_millicelsius(data->ctrl->cctemp);
return 0;
default:
break;
@ -105,7 +102,7 @@ static int nvme_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
temp = get_unaligned_le16(log->temperature);
else
temp = le16_to_cpu(log->temp_sensor[channel - 1]);
*val = KELVIN_TO_MILLICELSIUS(temp);
*val = kelvin_to_millicelsius(temp);
break;
case hwmon_temp_alarm:
*val = !!(log->critical_warning & NVME_SMART_CRIT_TEMPERATURE);

21
drivers/platform/goldfish/goldfish_pipe.c
Просмотреть файл

@ -257,7 +257,7 @@ static int goldfish_pipe_error_convert(int status)
}
}
static int pin_user_pages(unsigned long first_page,
static int goldfish_pin_pages(unsigned long first_page,
unsigned long last_page,
unsigned int last_page_size,
int is_write,
@ -274,7 +274,7 @@ static int pin_user_pages(unsigned long first_page,
*iter_last_page_size = last_page_size;
}
ret = get_user_pages_fast(first_page, requested_pages,
ret = pin_user_pages_fast(first_page, requested_pages,
!is_write ? FOLL_WRITE : 0,
pages);
if (ret <= 0)
@ -285,18 +285,6 @@ static int pin_user_pages(unsigned long first_page,
return ret;
}
static void release_user_pages(struct page **pages, int pages_count,
int is_write, s32 consumed_size)
{
int i;
for (i = 0; i < pages_count; i++) {
if (!is_write && consumed_size > 0)
set_page_dirty(pages[i]);
put_page(pages[i]);
}
}
/* Populate the call parameters, merging adjacent pages together */
static void populate_rw_params(struct page **pages,
int pages_count,
@ -354,7 +342,7 @@ static int transfer_max_buffers(struct goldfish_pipe *pipe,
if (mutex_lock_interruptible(&pipe->lock))
return -ERESTARTSYS;
pages_count = pin_user_pages(first_page, last_page,
pages_count = goldfish_pin_pages(first_page, last_page,
last_page_size, is_write,
pipe->pages, &iter_last_page_size);
if (pages_count < 0) {
@ -372,7 +360,8 @@ static int transfer_max_buffers(struct goldfish_pipe *pipe,
*consumed_size = pipe->command_buffer->rw_params.consumed_size;
release_user_pages(pipe->pages, pages_count, is_write, *consumed_size);
unpin_user_pages_dirty_lock(pipe->pages, pages_count,
!is_write && *consumed_size > 0);
mutex_unlock(&pipe->lock);
return 0;

7
drivers/platform/x86/asus-wmi.c
Просмотреть файл

@ -33,9 +33,9 @@
#include <linux/seq_file.h>
#include <linux/platform_data/x86/asus-wmi.h>
#include <linux/platform_device.h>
#include <linux/thermal.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/units.h>
#include <acpi/battery.h>
#include <acpi/video.h>
@ -1514,9 +1514,8 @@ static ssize_t asus_hwmon_temp1(struct device *dev,
if (err < 0)
return err;
value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
return sprintf(buf, "%d\n", value);
return sprintf(buf, "%ld\n",
deci_kelvin_to_millicelsius(value & 0xFFFF));
}
/* Fan1 */

7
drivers/platform/x86/intel_menlow.c
Просмотреть файл

@ -22,6 +22,7 @@
#include <linux/slab.h>
#include <linux/thermal.h>
#include <linux/types.h>
#include <linux/units.h>
MODULE_AUTHOR("Thomas Sujith");
MODULE_AUTHOR("Zhang Rui");
@ -302,8 +303,10 @@ static ssize_t aux_show(struct device *dev, struct device_attribute *dev_attr,
int result;
result = sensor_get_auxtrip(attr->handle, idx, &value);
if (result)
return result;
return result ? result : sprintf(buf, "%lu", DECI_KELVIN_TO_CELSIUS(value));
return sprintf(buf, "%lu", deci_kelvin_to_celsius(value));
}
static ssize_t aux0_show(struct device *dev,
@ -333,7 +336,7 @@ static ssize_t aux_store(struct device *dev, struct device_attribute *dev_attr,
return -EINVAL;
result = sensor_set_auxtrip(attr->handle, idx,
CELSIUS_TO_DECI_KELVIN(value));
celsius_to_deci_kelvin(value));
return result ? result : count;
}

2
drivers/thermal/armada_thermal.c
Просмотреть файл

@ -21,8 +21,6 @@
#include "thermal_core.h"
#define TO_MCELSIUS(c) ((c) * 1000)
/* Thermal Manager Control and Status Register */
#define PMU_TDC0_SW_RST_MASK (0x1 << 1)
#define PMU_TM_DISABLE_OFFS 0

7
drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
Просмотреть файл

@ -8,6 +8,7 @@
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/thermal.h>
#include <linux/units.h>
#include "int340x_thermal_zone.h"
static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone,
@ -34,7 +35,7 @@ static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone,
*temp = (unsigned long)conv_temp * 10;
} else
/* _TMP returns the temperature in tenths of degrees Kelvin */
*temp = DECI_KELVIN_TO_MILLICELSIUS(tmp);
*temp = deci_kelvin_to_millicelsius(tmp);
return 0;
}
@ -116,7 +117,7 @@ static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone,
snprintf(name, sizeof(name), "PAT%d", trip);
status = acpi_execute_simple_method(d->adev->handle, name,
MILLICELSIUS_TO_DECI_KELVIN(temp));
millicelsius_to_deci_kelvin(temp));
if (ACPI_FAILURE(status))
return -EIO;
@ -163,7 +164,7 @@ static int int340x_thermal_get_trip_config(acpi_handle handle, char *name,
if (ACPI_FAILURE(status))
return -EIO;
*temp = DECI_KELVIN_TO_MILLICELSIUS(r);
*temp = deci_kelvin_to_millicelsius(r);
return 0;
}

3
drivers/thermal/intel/intel_pch_thermal.c
Просмотреть файл

@ -13,6 +13,7 @@
#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/thermal.h>
#include <linux/units.h>
#include <linux/pm.h>
/* Intel PCH thermal Device IDs */
@ -93,7 +94,7 @@ static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd,
if (ACPI_SUCCESS(status)) {
unsigned long trip_temp;
trip_temp = DECI_KELVIN_TO_MILLICELSIUS(r);
trip_temp = deci_kelvin_to_millicelsius(r);
if (trip_temp) {
ptd->psv_temp = trip_temp;
ptd->psv_trip_id = *nr_trips;

35
drivers/vfio/vfio_iommu_type1.c
Просмотреть файл

@ -309,9 +309,8 @@ static int put_pfn(unsigned long pfn, int prot)
{
if (!is_invalid_reserved_pfn(pfn)) {
struct page *page = pfn_to_page(pfn);
if (prot & IOMMU_WRITE)
SetPageDirty(page);
put_page(page);
unpin_user_pages_dirty_lock(&page, 1, prot & IOMMU_WRITE);
return 1;
}
return 0;
@ -322,7 +321,6 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr,
{
struct page *page[1];
struct vm_area_struct *vma;
struct vm_area_struct *vmas[1];
unsigned int flags = 0;
int ret;
@ -330,33 +328,14 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr,
flags |= FOLL_WRITE;
down_read(&mm->mmap_sem);
if (mm == current->mm) {
ret = get_user_pages(vaddr, 1, flags | FOLL_LONGTERM, page,
vmas);
} else {
ret = get_user_pages_remote(NULL, mm, vaddr, 1, flags, page,
vmas, NULL);
/*
* The lifetime of a vaddr_get_pfn() page pin is
* userspace-controlled. In the fs-dax case this could
* lead to indefinite stalls in filesystem operations.
* Disallow attempts to pin fs-dax pages via this
* interface.
*/
if (ret > 0 && vma_is_fsdax(vmas[0])) {
ret = -EOPNOTSUPP;
put_page(page[0]);
}
}
up_read(&mm->mmap_sem);
ret = pin_user_pages_remote(NULL, mm, vaddr, 1, flags | FOLL_LONGTERM,
page, NULL, NULL);
if (ret == 1) {
*pfn = page_to_pfn(page[0]);
return 0;
ret = 0;
goto done;
}
down_read(&mm->mmap_sem);
vaddr = untagged_addr(vaddr);
vma = find_vma_intersection(mm, vaddr, vaddr + 1);
@ -366,7 +345,7 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr,
if (is_invalid_reserved_pfn(*pfn))
ret = 0;
}
done:
up_read(&mm->mmap_sem);
return ret;
}

144
fs/binfmt_elf.c
Просмотреть файл

@ -97,7 +97,7 @@ static struct linux_binfmt elf_format = {
.min_coredump = ELF_EXEC_PAGESIZE,
};
#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE)
#define BAD_ADDR(x) (unlikely((unsigned long)(x) >= TASK_SIZE))
static int set_brk(unsigned long start, unsigned long end, int prot)
{
@ -161,9 +161,11 @@ static int padzero(unsigned long elf_bss)
#endif
static int
create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
unsigned long load_addr, unsigned long interp_load_addr)
create_elf_tables(struct linux_binprm *bprm, const struct elfhdr *exec,
unsigned long load_addr, unsigned long interp_load_addr,
unsigned long e_entry)
{
struct mm_struct *mm = current->mm;
unsigned long p = bprm->p;
int argc = bprm->argc;
int envc = bprm->envc;
@ -176,7 +178,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
unsigned char k_rand_bytes[16];
int items;
elf_addr_t *elf_info;
int ei_index = 0;
int ei_index;
const struct cred *cred = current_cred();
struct vm_area_struct *vma;
@ -226,12 +228,12 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
return -EFAULT;
/* Create the ELF interpreter info */
elf_info = (elf_addr_t *)current->mm->saved_auxv;
elf_info = (elf_addr_t *)mm->saved_auxv;
/* update AT_VECTOR_SIZE_BASE if the number of NEW_AUX_ENT() changes */
#define NEW_AUX_ENT(id, val) \
do { \
elf_info[ei_index++] = id; \
elf_info[ei_index++] = val; \
*elf_info++ = id; \
*elf_info++ = val; \
} while (0)
#ifdef ARCH_DLINFO
@ -251,7 +253,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
NEW_AUX_ENT(AT_PHNUM, exec->e_phnum);
NEW_AUX_ENT(AT_BASE, interp_load_addr);
NEW_AUX_ENT(AT_FLAGS, 0);
NEW_AUX_ENT(AT_ENTRY, exec->e_entry);
NEW_AUX_ENT(AT_ENTRY, e_entry);
NEW_AUX_ENT(AT_UID, from_kuid_munged(cred->user_ns, cred->uid));
NEW_AUX_ENT(AT_EUID, from_kuid_munged(cred->user_ns, cred->euid));
NEW_AUX_ENT(AT_GID, from_kgid_munged(cred->user_ns, cred->gid));
@ -275,12 +277,13 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
}
#undef NEW_AUX_ENT
/* AT_NULL is zero; clear the rest too */
memset(&elf_info[ei_index], 0,
sizeof current->mm->saved_auxv - ei_index * sizeof elf_info[0]);
memset(elf_info, 0, (char *)mm->saved_auxv +
sizeof(mm->saved_auxv) - (char *)elf_info);
/* And advance past the AT_NULL entry. */
ei_index += 2;
elf_info += 2;
ei_index = elf_info - (elf_addr_t *)mm->saved_auxv;
sp = STACK_ADD(p, ei_index);
items = (argc + 1) + (envc + 1) + 1;
@ -299,7 +302,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
* Grow the stack manually; some architectures have a limit on how
* far ahead a user-space access may be in order to grow the stack.
*/
vma = find_extend_vma(current->mm, bprm->p);
vma = find_extend_vma(mm, bprm->p);
if (!vma)
return -EFAULT;
@ -308,7 +311,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
return -EFAULT;
/* Populate list of argv pointers back to argv strings. */
p = current->mm->arg_end = current->mm->arg_start;
p = mm->arg_end = mm->arg_start;
while (argc-- > 0) {
size_t len;
if (__put_user((elf_addr_t)p, sp++))
@ -320,10 +323,10 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
}
if (__put_user(0, sp++))
return -EFAULT;
current->mm->arg_end = p;
mm->arg_end = p;
/* Populate list of envp pointers back to envp strings. */
current->mm->env_end = current->mm->env_start = p;
mm->env_end = mm->env_start = p;
while (envc-- > 0) {
size_t len;
if (__put_user((elf_addr_t)p, sp++))
@ -335,10 +338,10 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
}
if (__put_user(0, sp++))
return -EFAULT;
current->mm->env_end = p;
mm->env_end = p;
/* Put the elf_info on the stack in the right place. */
if (copy_to_user(sp, elf_info, ei_index * sizeof(elf_addr_t)))
if (copy_to_user(sp, mm->saved_auxv, ei_index * sizeof(elf_addr_t)))
return -EFAULT;
return 0;
}
@ -689,15 +692,17 @@ static int load_elf_binary(struct linux_binprm *bprm)
int bss_prot = 0;
int retval, i;
unsigned long elf_entry;
unsigned long e_entry;
unsigned long interp_load_addr = 0;
unsigned long start_code, end_code, start_data, end_data;
unsigned long reloc_func_desc __maybe_unused = 0;
int executable_stack = EXSTACK_DEFAULT;
struct elfhdr *elf_ex = (struct elfhdr *)bprm->buf;
struct {
struct elfhdr elf_ex;
struct elfhdr interp_elf_ex;
} *loc;
struct arch_elf_state arch_state = INIT_ARCH_ELF_STATE;
struct mm_struct *mm;
struct pt_regs *regs;
loc = kmalloc(sizeof(*loc), GFP_KERNEL);
@ -706,29 +711,26 @@ static int load_elf_binary(struct linux_binprm *bprm)
goto out_ret;
}
/* Get the exec-header */
loc->elf_ex = *((struct elfhdr *)bprm->buf);
retval = -ENOEXEC;
/* First of all, some simple consistency checks */
if (memcmp(loc->elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
if (memcmp(elf_ex->e_ident, ELFMAG, SELFMAG) != 0)
goto out;
if (loc->elf_ex.e_type != ET_EXEC && loc->elf_ex.e_type != ET_DYN)
if (elf_ex->e_type != ET_EXEC && elf_ex->e_type != ET_DYN)
goto out;
if (!elf_check_arch(&loc->elf_ex))
if (!elf_check_arch(elf_ex))
goto out;
if (elf_check_fdpic(&loc->elf_ex))
if (elf_check_fdpic(elf_ex))
goto out;
if (!bprm->file->f_op->mmap)
goto out;
elf_phdata = load_elf_phdrs(&loc->elf_ex, bprm->file);
elf_phdata = load_elf_phdrs(elf_ex, bprm->file);
if (!elf_phdata)
goto out;
elf_ppnt = elf_phdata;
for (i = 0; i < loc->elf_ex.e_phnum; i++, elf_ppnt++) {
for (i = 0; i < elf_ex->e_phnum; i++, elf_ppnt++) {
char *elf_interpreter;
if (elf_ppnt->p_type != PT_INTERP)
@ -782,7 +784,7 @@ out_free_interp:
}
elf_ppnt = elf_phdata;
for (i = 0; i < loc->elf_ex.e_phnum; i++, elf_ppnt++)
for (i = 0; i < elf_ex->e_phnum; i++, elf_ppnt++)
switch (elf_ppnt->p_type) {
case PT_GNU_STACK:
if (elf_ppnt->p_flags & PF_X)
@ -792,7 +794,7 @@ out_free_interp:
break;
case PT_LOPROC ... PT_HIPROC:
retval = arch_elf_pt_proc(&loc->elf_ex, elf_ppnt,
retval = arch_elf_pt_proc(elf_ex, elf_ppnt,
bprm->file, false,
&arch_state);
if (retval)
@ -836,7 +838,7 @@ out_free_interp:
* still possible to return an error to the code that invoked
* the exec syscall.
*/
retval = arch_check_elf(&loc->elf_ex,
retval = arch_check_elf(elf_ex,
!!interpreter, &loc->interp_elf_ex,
&arch_state);
if (retval)
@ -849,8 +851,8 @@ out_free_interp:
/* Do this immediately, since STACK_TOP as used in setup_arg_pages
may depend on the personality. */
SET_PERSONALITY2(loc->elf_ex, &arch_state);
if (elf_read_implies_exec(loc->elf_ex, executable_stack))
SET_PERSONALITY2(*elf_ex, &arch_state);
if (elf_read_implies_exec(*elf_ex, executable_stack))
current->personality |= READ_IMPLIES_EXEC;
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
@ -877,7 +879,7 @@ out_free_interp:
/* Now we do a little grungy work by mmapping the ELF image into
the correct location in memory. */
for(i = 0, elf_ppnt = elf_phdata;
i < loc->elf_ex.e_phnum; i++, elf_ppnt++) {
i < elf_ex->e_phnum; i++, elf_ppnt++) {
int elf_prot, elf_flags;
unsigned long k, vaddr;
unsigned long total_size = 0;
@ -921,9 +923,9 @@ out_free_interp:
* If we are loading ET_EXEC or we have already performed
* the ET_DYN load_addr calculations, proceed normally.
*/
if (loc->elf_ex.e_type == ET_EXEC || load_addr_set) {
if (elf_ex->e_type == ET_EXEC || load_addr_set) {
elf_flags |= MAP_FIXED;
} else if (loc->elf_ex.e_type == ET_DYN) {
} else if (elf_ex->e_type == ET_DYN) {
/*
* This logic is run once for the first LOAD Program
* Header for ET_DYN binaries to calculate the
@ -972,7 +974,7 @@ out_free_interp:
load_bias = ELF_PAGESTART(load_bias - vaddr);
total_size = total_mapping_size(elf_phdata,
loc->elf_ex.e_phnum);
elf_ex->e_phnum);
if (!total_size) {
retval = -EINVAL;
goto out_free_dentry;
@ -990,7 +992,7 @@ out_free_interp:
if (!load_addr_set) {
load_addr_set = 1;
load_addr = (elf_ppnt->p_vaddr - elf_ppnt->p_offset);
if (loc->elf_ex.e_type == ET_DYN) {
if (elf_ex->e_type == ET_DYN) {
load_bias += error -
ELF_PAGESTART(load_bias + vaddr);
load_addr += load_bias;
@ -998,7 +1000,7 @@ out_free_interp:
}
}
k = elf_ppnt->p_vaddr;
if (k < start_code)
if ((elf_ppnt->p_flags & PF_X) && k < start_code)
start_code = k;
if (start_data < k)
start_data = k;
@ -1031,7 +1033,7 @@ out_free_interp:
}
}
loc->elf_ex.e_entry += load_bias;
e_entry = elf_ex->e_entry + load_bias;
elf_bss += load_bias;
elf_brk += load_bias;
start_code += load_bias;
@ -1074,7 +1076,7 @@ out_free_interp:
allow_write_access(interpreter);
fput(interpreter);
} else {
elf_entry = loc->elf_ex.e_entry;
elf_entry = e_entry;
if (BAD_ADDR(elf_entry)) {
retval = -EINVAL;
goto out_free_dentry;
@ -1092,15 +1094,17 @@ out_free_interp:
goto out;
#endif /* ARCH_HAS_SETUP_ADDITIONAL_PAGES */
retval = create_elf_tables(bprm, &loc->elf_ex,
load_addr, interp_load_addr);
retval = create_elf_tables(bprm, elf_ex,
load_addr, interp_load_addr, e_entry);
if (retval < 0)
goto out;
current->mm->end_code = end_code;
current->mm->start_code = start_code;
current->mm->start_data = start_data;
current->mm->end_data = end_data;
current->mm->start_stack = bprm->p;
mm = current->mm;
mm->end_code = end_code;
mm->start_code = start_code;
mm->start_data = start_data;
mm->end_data = end_data;
mm->start_stack = bprm->p;
if ((current->flags & PF_RANDOMIZE) && (randomize_va_space > 1)) {
/*
@ -1111,12 +1115,11 @@ out_free_interp:
* growing down), and into the unused ELF_ET_DYN_BASE region.
*/
if (IS_ENABLED(CONFIG_ARCH_HAS_ELF_RANDOMIZE) &&
loc->elf_ex.e_type == ET_DYN && !interpreter)
current->mm->brk = current->mm->start_brk =
ELF_ET_DYN_BASE;
elf_ex->e_type == ET_DYN && !interpreter) {
mm->brk = mm->start_brk = ELF_ET_DYN_BASE;
}
current->mm->brk = current->mm->start_brk =
arch_randomize_brk(current->mm);
mm->brk = mm->start_brk = arch_randomize_brk(mm);
#ifdef compat_brk_randomized
current->brk_randomized = 1;
#endif
@ -1574,6 +1577,7 @@ static void fill_siginfo_note(struct memelfnote *note, user_siginfo_t *csigdata,
*/
static int fill_files_note(struct memelfnote *note)
{
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
unsigned count, size, names_ofs, remaining, n;
user_long_t *data;
@ -1581,7 +1585,7 @@ static int fill_files_note(struct memelfnote *note)
char *name_base, *name_curpos;
/* *Estimated* file count and total data size needed */
count = current->mm->map_count;
count = mm->map_count;
if (count > UINT_MAX / 64)
return -EINVAL;
size = count * 64;
@ -1591,6 +1595,10 @@ static int fill_files_note(struct memelfnote *note)
if (size >= MAX_FILE_NOTE_SIZE) /* paranoia check */
return -EINVAL;
size = round_up(size, PAGE_SIZE);
/*
* "size" can be 0 here legitimately.
* Let it ENOMEM and omit NT_FILE section which will be empty anyway.
*/
data = kvmalloc(size, GFP_KERNEL);
if (ZERO_OR_NULL_PTR(data))
return -ENOMEM;
@ -1599,7 +1607,7 @@ static int fill_files_note(struct memelfnote *note)
name_base = name_curpos = ((char *)data) + names_ofs;
remaining = size - names_ofs;
count = 0;
for (vma = current->mm->mmap; vma != NULL; vma = vma->vm_next) {
for (vma = mm->mmap; vma != NULL; vma = vma->vm_next) {
struct file *file;
const char *filename;
@ -1633,10 +1641,10 @@ static int fill_files_note(struct memelfnote *note)
data[0] = count;
data[1] = PAGE_SIZE;
/*
* Count usually is less than current->mm->map_count,
* Count usually is less than mm->map_count,
* we need to move filenames down.
*/
n = current->mm->map_count - count;
n = mm->map_count - count;
if (n != 0) {
unsigned shift_bytes = n * 3 * sizeof(data[0]);
memmove(name_base - shift_bytes, name_base,
@ -2182,7 +2190,7 @@ static int elf_core_dump(struct coredump_params *cprm)
int segs, i;
size_t vma_data_size = 0;
struct vm_area_struct *vma, *gate_vma;
struct elfhdr *elf = NULL;
struct elfhdr elf;
loff_t offset = 0, dataoff;
struct elf_note_info info = { };
struct elf_phdr *phdr4note = NULL;
@ -2203,10 +2211,6 @@ static int elf_core_dump(struct coredump_params *cprm)
* exists while dumping the mm->vm_next areas to the core file.
*/
/* alloc memory for large data structures: too large to be on stack */
elf = kmalloc(sizeof(*elf), GFP_KERNEL);
if (!elf)
goto out;
/*
* The number of segs are recored into ELF header as 16bit value.
* Please check DEFAULT_MAX_MAP_COUNT definition when you modify here.
@ -2230,7 +2234,7 @@ static int elf_core_dump(struct coredump_params *cprm)
* Collect all the non-memory information about the process for the
* notes. This also sets up the file header.
*/
if (!fill_note_info(elf, e_phnum, &info, cprm->siginfo, cprm->regs))
if (!fill_note_info(&elf, e_phnum, &info, cprm->siginfo, cprm->regs))
goto cleanup;
has_dumped = 1;
@ -2238,7 +2242,7 @@ static int elf_core_dump(struct coredump_params *cprm)
fs = get_fs();
set_fs(KERNEL_DS);
offset += sizeof(*elf); /* Elf header */
offset += sizeof(elf); /* Elf header */
offset += segs * sizeof(struct elf_phdr); /* Program headers */
/* Write notes phdr entry */
@ -2257,11 +2261,13 @@ static int elf_core_dump(struct coredump_params *cprm)
dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE);
if (segs - 1 > ULONG_MAX / sizeof(*vma_filesz))
goto end_coredump;
/*
* Zero vma process will get ZERO_SIZE_PTR here.
* Let coredump continue for register state at least.
*/
vma_filesz = kvmalloc(array_size(sizeof(*vma_filesz), (segs - 1)),
GFP_KERNEL);
if (ZERO_OR_NULL_PTR(vma_filesz))
if (!vma_filesz)
goto end_coredump;
for (i = 0, vma = first_vma(current, gate_vma); vma != NULL;
@ -2281,12 +2287,12 @@ static int elf_core_dump(struct coredump_params *cprm)
shdr4extnum = kmalloc(sizeof(*shdr4extnum), GFP_KERNEL);
if (!shdr4extnum)
goto end_coredump;
fill_extnum_info(elf, shdr4extnum, e_shoff, segs);
fill_extnum_info(&elf, shdr4extnum, e_shoff, segs);
}
offset = dataoff;
if (!dump_emit(cprm, elf, sizeof(*elf)))
if (!dump_emit(cprm, &elf, sizeof(elf)))
goto end_coredump;
if (!dump_emit(cprm, phdr4note, sizeof(*phdr4note)))
@ -2370,8 +2376,6 @@ cleanup:
kfree(shdr4extnum);
kvfree(vma_filesz);
kfree(phdr4note);
kfree(elf);
out:
return has_dumped;
}

2
fs/btrfs/compression.c
Просмотреть файл

@ -1290,7 +1290,7 @@ int btrfs_decompress_buf2page(const char *buf, unsigned long buf_start,
/* copy bytes from the working buffer into the pages */
while (working_bytes > 0) {
bytes = min_t(unsigned long, bvec.bv_len,
PAGE_SIZE - buf_offset);
PAGE_SIZE - (buf_offset % PAGE_SIZE));
bytes = min(bytes, working_bytes);
kaddr = kmap_atomic(bvec.bv_page);

121
fs/btrfs/zlib.c
Просмотреть файл

@ -20,9 +20,13 @@
#include <linux/refcount.h>
#include "compression.h"
/* workspace buffer size for s390 zlib hardware support */
#define ZLIB_DFLTCC_BUF_SIZE (4 * PAGE_SIZE)
struct workspace {
z_stream strm;
char *buf;
unsigned int buf_size;
struct list_head list;
int level;
};
@ -61,7 +65,21 @@ struct list_head *zlib_alloc_workspace(unsigned int level)
zlib_inflate_workspacesize());
workspace->strm.workspace = kvmalloc(workspacesize, GFP_KERNEL);
workspace->level = level;
workspace->buf = NULL;
/*
* In case of s390 zlib hardware support, allocate lager workspace
* buffer. If allocator fails, fall back to a single page buffer.
*/
if (zlib_deflate_dfltcc_enabled()) {
workspace->buf = kmalloc(ZLIB_DFLTCC_BUF_SIZE,
__GFP_NOMEMALLOC | __GFP_NORETRY |
__GFP_NOWARN | GFP_NOIO);
workspace->buf_size = ZLIB_DFLTCC_BUF_SIZE;
}
if (!workspace->buf) {
workspace->buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
workspace->buf_size = PAGE_SIZE;
}
if (!workspace->strm.workspace || !workspace->buf)
goto fail;
@ -85,6 +103,7 @@ int zlib_compress_pages(struct list_head *ws, struct address_space *mapping,
struct page *in_page = NULL;
struct page *out_page = NULL;
unsigned long bytes_left;
unsigned int in_buf_pages;
unsigned long len = *total_out;
unsigned long nr_dest_pages = *out_pages;
const unsigned long max_out = nr_dest_pages * PAGE_SIZE;
@ -102,9 +121,6 @@ int zlib_compress_pages(struct list_head *ws, struct address_space *mapping,
workspace->strm.total_in = 0;
workspace->strm.total_out = 0;
in_page = find_get_page(mapping, start >> PAGE_SHIFT);
data_in = kmap(in_page);
out_page = alloc_page(GFP_NOFS | __GFP_HIGHMEM);
if (out_page == NULL) {
ret = -ENOMEM;
@ -114,12 +130,51 @@ int zlib_compress_pages(struct list_head *ws, struct address_space *mapping,
pages[0] = out_page;
nr_pages = 1;
workspace->strm.next_in = data_in;
workspace->strm.next_in = workspace->buf;
workspace->strm.avail_in = 0;
workspace->strm.next_out = cpage_out;
workspace->strm.avail_out = PAGE_SIZE;
workspace->strm.avail_in = min(len, PAGE_SIZE);
while (workspace->strm.total_in < len) {
/*
* Get next input pages and copy the contents to
* the workspace buffer if required.
*/
if (workspace->strm.avail_in == 0) {
bytes_left = len - workspace->strm.total_in;
in_buf_pages = min(DIV_ROUND_UP(bytes_left, PAGE_SIZE),
workspace->buf_size / PAGE_SIZE);
if (in_buf_pages > 1) {
int i;
for (i = 0; i < in_buf_pages; i++) {
if (in_page) {
kunmap(in_page);
put_page(in_page);
}
in_page = find_get_page(mapping,
start >> PAGE_SHIFT);
data_in = kmap(in_page);
memcpy(workspace->buf + i * PAGE_SIZE,
data_in, PAGE_SIZE);
start += PAGE_SIZE;
}
workspace->strm.next_in = workspace->buf;
} else {
if (in_page) {
kunmap(in_page);
put_page(in_page);
}
in_page = find_get_page(mapping,
start >> PAGE_SHIFT);
data_in = kmap(in_page);
start += PAGE_SIZE;
workspace->strm.next_in = data_in;
}
workspace->strm.avail_in = min(bytes_left,
(unsigned long) workspace->buf_size);
}
ret = zlib_deflate(&workspace->strm, Z_SYNC_FLUSH);
if (ret != Z_OK) {
pr_debug("BTRFS: deflate in loop returned %d\n",
@ -161,33 +216,43 @@ int zlib_compress_pages(struct list_head *ws, struct address_space *mapping,
/* we're all done */
if (workspace->strm.total_in >= len)
break;
/* we've read in a full page, get a new one */
if (workspace->strm.avail_in == 0) {
if (workspace->strm.total_out > max_out)
break;
bytes_left = len - workspace->strm.total_in;
kunmap(in_page);
put_page(in_page);
start += PAGE_SIZE;
in_page = find_get_page(mapping,
start >> PAGE_SHIFT);
data_in = kmap(in_page);
workspace->strm.avail_in = min(bytes_left,
PAGE_SIZE);
workspace->strm.next_in = data_in;
}
}
workspace->strm.avail_in = 0;
/*
* Call deflate with Z_FINISH flush parameter providing more output
* space but no more input data, until it returns with Z_STREAM_END.
*/
while (ret != Z_STREAM_END) {
ret = zlib_deflate(&workspace->strm, Z_FINISH);
if (ret == Z_STREAM_END)
break;
if (ret != Z_OK && ret != Z_BUF_ERROR) {
zlib_deflateEnd(&workspace->strm);
if (ret != Z_STREAM_END) {
ret = -EIO;
goto out;
} else if (workspace->strm.avail_out == 0) {
/* get another page for the stream end */
kunmap(out_page);
if (nr_pages == nr_dest_pages) {
out_page = NULL;
ret = -E2BIG;
goto out;
}
out_page = alloc_page(GFP_NOFS | __GFP_HIGHMEM);
if (out_page == NULL) {
ret = -ENOMEM;
goto out;
}
cpage_out = kmap(out_page);
pages[nr_pages] = out_page;
nr_pages++;
workspace->strm.avail_out = PAGE_SIZE;
workspace->strm.next_out = cpage_out;
}
}
zlib_deflateEnd(&workspace->strm);
if (workspace->strm.total_out >= workspace->strm.total_in) {
ret = -E2BIG;
@ -231,7 +296,7 @@ int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
workspace->strm.total_out = 0;
workspace->strm.next_out = workspace->buf;
workspace->strm.avail_out = PAGE_SIZE;
workspace->strm.avail_out = workspace->buf_size;
/* If it's deflate, and it's got no preset dictionary, then
we can tell zlib to skip the adler32 check. */
@ -270,7 +335,7 @@ int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
}
workspace->strm.next_out = workspace->buf;
workspace->strm.avail_out = PAGE_SIZE;
workspace->strm.avail_out = workspace->buf_size;
if (workspace->strm.avail_in == 0) {
unsigned long tmp;
@ -320,7 +385,7 @@ int zlib_decompress(struct list_head *ws, unsigned char *data_in,
workspace->strm.total_in = 0;
workspace->strm.next_out = workspace->buf;
workspace->strm.avail_out = PAGE_SIZE;
workspace->strm.avail_out = workspace->buf_size;
workspace->strm.total_out = 0;
/* If it's deflate, and it's got no preset dictionary, then
we can tell zlib to skip the adler32 check. */
@ -364,7 +429,7 @@ int zlib_decompress(struct list_head *ws, unsigned char *data_in,
buf_offset = 0;
bytes = min(PAGE_SIZE - pg_offset,
PAGE_SIZE - buf_offset);
PAGE_SIZE - (buf_offset % PAGE_SIZE));
bytes = min(bytes, bytes_left);
kaddr = kmap_atomic(dest_page);
@ -375,7 +440,7 @@ int zlib_decompress(struct list_head *ws, unsigned char *data_in,
bytes_left -= bytes;
next:
workspace->strm.next_out = workspace->buf;
workspace->strm.avail_out = PAGE_SIZE;
workspace->strm.avail_out = workspace->buf_size;
}
if (ret != Z_STREAM_END && bytes_left != 0)

5
fs/exec.c
Просмотреть файл

@ -760,6 +760,11 @@ int setup_arg_pages(struct linux_binprm *bprm,
goto out_unlock;
BUG_ON(prev != vma);
if (unlikely(vm_flags & VM_EXEC)) {
pr_warn_once("process '%pD4' started with executable stack\n",
bprm->file);
}
/* Move stack pages down in memory. */
if (stack_shift) {
ret = shift_arg_pages(vma, stack_shift);

2
fs/fs-writeback.c
Просмотреть файл

@ -2063,7 +2063,7 @@ void wb_workfn(struct work_struct *work)
struct bdi_writeback, dwork);
long pages_written;
set_worker_desc("flush-%s", dev_name(wb->bdi->dev));
set_worker_desc("flush-%s", bdi_dev_name(wb->bdi));
current->flags |= PF_SWAPWRITE;
if (likely(!current_is_workqueue_rescuer() ||

6
fs/io_uring.c
Просмотреть файл

@ -6005,7 +6005,7 @@ static int io_sqe_buffer_unregister(struct io_ring_ctx *ctx)
struct io_mapped_ubuf *imu = &ctx->user_bufs[i];
for (j = 0; j < imu->nr_bvecs; j++)
put_user_page(imu->bvec[j].bv_page);
unpin_user_page(imu->bvec[j].bv_page);
if (ctx->account_mem)
io_unaccount_mem(ctx->user, imu->nr_bvecs);
@ -6126,7 +6126,7 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, void __user *arg,
ret = 0;
down_read(&current->mm->mmap_sem);
pret = get_user_pages(ubuf, nr_pages,
pret = pin_user_pages(ubuf, nr_pages,
FOLL_WRITE | FOLL_LONGTERM,
pages, vmas);
if (pret == nr_pages) {
@ -6150,7 +6150,7 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, void __user *arg,
* release any pages we did get
*/
if (pret > 0)
put_user_pages(pages, pret);
unpin_user_pages(pages, pret);
if (ctx->account_mem)
io_unaccount_mem(ctx->user, nr_pages);
kvfree(imu->bvec);

2
fs/ocfs2/cluster/quorum.c
Просмотреть файл

@ -73,7 +73,7 @@ static void o2quo_fence_self(void)
"system by restarting ***\n");
emergency_restart();
break;
};
}
}
/* Indicate that a timeout occurred on a heartbeat region write. The

2
fs/ocfs2/dlm/Makefile
Просмотреть файл

@ -1,6 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
ccflags-y := -I $(srctree)/$(src)/..
obj-$(CONFIG_OCFS2_FS_O2CB) += ocfs2_dlm.o
ocfs2_dlm-objs := dlmdomain.o dlmdebug.o dlmthread.o dlmrecovery.o \

8
fs/ocfs2/dlm/dlmast.c
Просмотреть файл

@ -23,15 +23,15 @@
#include <linux/spinlock.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static void dlm_update_lvb(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
struct dlm_lock *lock);

4
fs/ocfs2/dlm/dlmcommon.h
Просмотреть файл

@ -688,10 +688,6 @@ struct dlm_begin_reco
__be32 pad2;
};
#define BITS_PER_BYTE 8
#define BITS_TO_BYTES(bits) (((bits)+BITS_PER_BYTE-1)/BITS_PER_BYTE)
struct dlm_query_join_request
{
u8 node_idx;

8
fs/ocfs2/dlm/dlmconvert.c
Просмотреть файл

@ -23,9 +23,9 @@
#include <linux/spinlock.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
@ -33,7 +33,7 @@
#include "dlmconvert.h"
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
/* NOTE: __dlmconvert_master is the only function in here that
* needs a spinlock held on entry (res->spinlock) and it is the

8
fs/ocfs2/dlm/dlmdebug.c
Просмотреть файл

@ -17,9 +17,9 @@
#include <linux/debugfs.h>
#include <linux/export.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
@ -27,7 +27,7 @@
#include "dlmdebug.h"
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static int stringify_lockname(const char *lockname, int locklen, char *buf,
int len);

8
fs/ocfs2/dlm/dlmdomain.c
Просмотреть файл

@ -20,9 +20,9 @@
#include <linux/debugfs.h>
#include <linux/sched/signal.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
@ -30,7 +30,7 @@
#include "dlmdebug.h"
#define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_DOMAIN)
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
/*
* ocfs2 node maps are array of long int, which limits to send them freely

8
fs/ocfs2/dlm/dlmlock.c
Просмотреть файл

@ -25,9 +25,9 @@
#include <linux/delay.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
@ -35,7 +35,7 @@
#include "dlmconvert.h"
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static struct kmem_cache *dlm_lock_cache;

10
fs/ocfs2/dlm/dlmmaster.c
Просмотреть файл

@ -25,9 +25,9 @@
#include <linux/delay.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
@ -35,7 +35,7 @@
#include "dlmdebug.h"
#define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_MASTER)
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static void dlm_mle_node_down(struct dlm_ctxt *dlm,
struct dlm_master_list_entry *mle,
@ -2554,8 +2554,6 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
if (!dlm_grab(dlm))
return -EINVAL;
BUG_ON(target == O2NM_MAX_NODES);
name = res->lockname.name;
namelen = res->lockname.len;

10
fs/ocfs2/dlm/dlmrecovery.c
Просмотреть файл

@ -26,16 +26,16 @@
#include <linux/delay.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
#include "dlmdomain.h"
#define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_RECOVERY)
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node);
@ -1668,7 +1668,7 @@ static int dlm_lockres_master_requery(struct dlm_ctxt *dlm,
int dlm_do_master_requery(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
u8 nodenum, u8 *real_master)
{
int ret = -EINVAL;
int ret;
struct dlm_master_requery req;
int status = DLM_LOCK_RES_OWNER_UNKNOWN;

8
fs/ocfs2/dlm/dlmthread.c
Просмотреть файл

@ -25,16 +25,16 @@
#include <linux/delay.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
#include "dlmdomain.h"
#define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_THREAD)
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static int dlm_thread(void *data);
static void dlm_flush_asts(struct dlm_ctxt *dlm);

8
fs/ocfs2/dlm/dlmunlock.c
Просмотреть файл

@ -23,15 +23,15 @@
#include <linux/spinlock.h>
#include <linux/delay.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
#include "cluster/tcp.h"
#include "../cluster/heartbeat.h"
#include "../cluster/nodemanager.h"
#include "../cluster/tcp.h"
#include "dlmapi.h"
#include "dlmcommon.h"
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
#define DLM_UNLOCK_FREE_LOCK 0x00000001
#define DLM_UNLOCK_CALL_AST 0x00000002

2
fs/ocfs2/dlmfs/Makefile
Просмотреть файл

@ -1,6 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
ccflags-y := -I $(srctree)/$(src)/..
obj-$(CONFIG_OCFS2_FS) += ocfs2_dlmfs.o
ocfs2_dlmfs-objs := userdlm.o dlmfs.o

4
fs/ocfs2/dlmfs/dlmfs.c
Просмотреть файл

@ -33,11 +33,11 @@
#include <linux/uaccess.h>
#include "stackglue.h"
#include "../stackglue.h"
#include "userdlm.h"
#define MLOG_MASK_PREFIX ML_DLMFS
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static const struct super_operations dlmfs_ops;

6
fs/ocfs2/dlmfs/userdlm.c
Просмотреть файл

@ -21,12 +21,12 @@
#include <linux/types.h>
#include <linux/crc32.h>
#include "ocfs2_lockingver.h"
#include "stackglue.h"
#include "../ocfs2_lockingver.h"
#include "../stackglue.h"
#include "userdlm.h"
#define MLOG_MASK_PREFIX ML_DLMFS
#include "cluster/masklog.h"
#include "../cluster/masklog.h"
static inline struct user_lock_res *user_lksb_to_lock_res(struct ocfs2_dlm_lksb *lksb)

2
fs/ocfs2/dlmglue.c
Просмотреть файл

@ -570,7 +570,7 @@ void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
mlog_bug_on_msg(1, "type: %d\n", type);
ops = NULL; /* thanks, gcc */
break;
};
}
ocfs2_build_lock_name(type, OCFS2_I(inode)->ip_blkno,
generation, res->l_name);

2
fs/ocfs2/journal.h
Просмотреть файл

@ -597,9 +597,11 @@ static inline void ocfs2_update_inode_fsync_trans(handle_t *handle,
{
struct ocfs2_inode_info *oi = OCFS2_I(inode);
if (!is_handle_aborted(handle)) {
oi->i_sync_tid = handle->h_transaction->t_tid;
if (datasync)
oi->i_datasync_tid = handle->h_transaction->t_tid;
}
}
#endif /* OCFS2_JOURNAL_H */

3
fs/ocfs2/namei.c
Просмотреть файл

@ -586,8 +586,7 @@ static int __ocfs2_mknod_locked(struct inode *dir,
mlog_errno(status);
}
oi->i_sync_tid = handle->h_transaction->t_tid;
oi->i_datasync_tid = handle->h_transaction->t_tid;
ocfs2_update_inode_fsync_trans(handle, inode, 1);
leave:
if (status < 0) {

1
fs/reiserfs/stree.c
Просмотреть файл

@ -2240,6 +2240,7 @@ error_out:
/* also releases the path */
unfix_nodes(&s_ins_balance);
#ifdef REISERQUOTA_DEBUG
if (inode)
reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE,
"reiserquota insert_item(): freeing %u id=%u type=%c",
quota_bytes, inode->i_uid, head2type(ih));

10
include/linux/backing-dev.h
Просмотреть файл

@ -13,6 +13,7 @@
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/blkdev.h>
#include <linux/device.h>
#include <linux/writeback.h>
#include <linux/blk-cgroup.h>
#include <linux/backing-dev-defs.h>
@ -504,4 +505,13 @@ static inline int bdi_rw_congested(struct backing_dev_info *bdi)
(1 << WB_async_congested));
}
extern const char *bdi_unknown_name;
static inline const char *bdi_dev_name(struct backing_dev_info *bdi)
{
if (!bdi || !bdi->dev)
return bdi_unknown_name;
return dev_name(bdi->dev);
}
#endif /* _LINUX_BACKING_DEV_H */

1
include/linux/bitops.h
Просмотреть файл

@ -13,6 +13,7 @@
#define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE)
#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(long))
#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(char))
extern unsigned int __sw_hweight8(unsigned int w);
extern unsigned int __sw_hweight16(unsigned int w);

6
include/linux/fs.h
Просмотреть файл

@ -2737,7 +2737,6 @@ static inline int filemap_fdatawait(struct address_space *mapping)
extern bool filemap_range_has_page(struct address_space *, loff_t lstart,
loff_t lend);
extern int filemap_write_and_wait(struct address_space *mapping);
extern int filemap_write_and_wait_range(struct address_space *mapping,
loff_t lstart, loff_t lend);
extern int __filemap_fdatawrite_range(struct address_space *mapping,
@ -2747,6 +2746,11 @@ extern int filemap_fdatawrite_range(struct address_space *mapping,
extern int filemap_check_errors(struct address_space *mapping);
extern void __filemap_set_wb_err(struct address_space *mapping, int err);
static inline int filemap_write_and_wait(struct address_space *mapping)
{
return filemap_write_and_wait_range(mapping, 0, LLONG_MAX);
}
extern int __must_check file_fdatawait_range(struct file *file, loff_t lstart,
loff_t lend);
extern int __must_check file_check_and_advance_wb_err(struct file *file);

5
include/linux/io-mapping.h
Просмотреть файл

@ -28,6 +28,7 @@ struct io_mapping {
#ifdef CONFIG_HAVE_ATOMIC_IOMAP
#include <linux/pfn.h>
#include <asm/iomap.h>
/*
* For small address space machines, mapping large objects
@ -64,12 +65,10 @@ io_mapping_map_atomic_wc(struct io_mapping *mapping,
unsigned long offset)
{
resource_size_t phys_addr;
unsigned long pfn;
BUG_ON(offset >= mapping->size);
phys_addr = mapping->base + offset;
pfn = (unsigned long) (phys_addr >> PAGE_SHIFT);
return iomap_atomic_prot_pfn(pfn, mapping->prot);
return iomap_atomic_prot_pfn(PHYS_PFN(phys_addr), mapping->prot);
}
static inline void

7
include/linux/memblock.h
Просмотреть файл

@ -113,6 +113,9 @@ int memblock_add(phys_addr_t base, phys_addr_t size);
int memblock_remove(phys_addr_t base, phys_addr_t size);
int memblock_free(phys_addr_t base, phys_addr_t size);
int memblock_reserve(phys_addr_t base, phys_addr_t size);
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
int memblock_physmem_add(phys_addr_t base, phys_addr_t size);
#endif
void memblock_trim_memory(phys_addr_t align);
bool memblock_overlaps_region(struct memblock_type *type,
phys_addr_t base, phys_addr_t size);
@ -127,10 +130,6 @@ void reset_node_managed_pages(pg_data_t *pgdat);
void reset_all_zones_managed_pages(void);
/* Low level functions */
int memblock_add_range(struct memblock_type *type,
phys_addr_t base, phys_addr_t size,
int nid, enum memblock_flags flags);
void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags,
struct memblock_type *type_a,
struct memblock_type *type_b, phys_addr_t *out_start,

29
include/linux/memory.h
Просмотреть файл

@ -29,8 +29,6 @@ struct memory_block {
int section_count; /* serialized by mem_sysfs_mutex */
int online_type; /* for passing data to online routine */
int phys_device; /* to which fru does this belong? */
void *hw; /* optional pointer to fw/hw data */
int (*phys_callback)(struct memory_block *);
struct device dev;
int nid; /* NID for this memory block */
};
@ -55,19 +53,6 @@ struct memory_notify {
int status_change_nid;
};
/*
* During pageblock isolation, count the number of pages within the
* range [start_pfn, start_pfn + nr_pages) which are owned by code
* in the notifier chain.
*/
#define MEM_ISOLATE_COUNT (1<<0)
struct memory_isolate_notify {
unsigned long start_pfn; /* Start of range to check */
unsigned int nr_pages; /* # pages in range to check */
unsigned int pages_found; /* # pages owned found by callbacks */
};
struct notifier_block;
struct mem_section;
@ -94,27 +79,13 @@ static inline int memory_notify(unsigned long val, void *v)
{
return 0;
}
static inline int register_memory_isolate_notifier(struct notifier_block *nb)
{
return 0;
}
static inline void unregister_memory_isolate_notifier(struct notifier_block *nb)
{
}
static inline int memory_isolate_notify(unsigned long val, void *v)
{
return 0;
}
#else
extern int register_memory_notifier(struct notifier_block *nb);
extern void unregister_memory_notifier(struct notifier_block *nb);
extern int register_memory_isolate_notifier(struct notifier_block *nb);
extern void unregister_memory_isolate_notifier(struct notifier_block *nb);
int create_memory_block_devices(unsigned long start, unsigned long size);
void remove_memory_block_devices(unsigned long start, unsigned long size);
extern void memory_dev_init(void);
extern int memory_notify(unsigned long val, void *v);
extern int memory_isolate_notify(unsigned long val, void *v);
extern struct memory_block *find_memory_block(struct mem_section *);
typedef int (*walk_memory_blocks_func_t)(struct memory_block *, void *);
extern int walk_memory_blocks(unsigned long start, unsigned long size,

3
include/linux/memory_hotplug.h
Просмотреть файл

@ -94,7 +94,8 @@ extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages);
extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages);
extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
/* VM interface that may be used by firmware interface */
extern int online_pages(unsigned long, unsigned long, int);
extern int online_pages(unsigned long pfn, unsigned long nr_pages,
int online_type, int nid);
extern int test_pages_in_a_zone(unsigned long start_pfn, unsigned long end_pfn,
unsigned long *valid_start, unsigned long *valid_end);
extern unsigned long __offline_isolated_pages(unsigned long start_pfn,

100
include/linux/mm.h
Просмотреть файл

@ -70,11 +70,6 @@ static inline void totalram_pages_add(long count)
atomic_long_add(count, &_totalram_pages);
}
static inline void totalram_pages_set(long val)
{
atomic_long_set(&_totalram_pages, val);
}
extern void * high_memory;
extern int page_cluster;
@ -916,10 +911,6 @@ vm_fault_t finish_mkwrite_fault(struct vm_fault *vmf);
#define ZONEID_PGSHIFT (ZONEID_PGOFF * (ZONEID_SHIFT != 0))
#if SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS
#error SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS
#endif
#define ZONES_MASK ((1UL << ZONES_WIDTH) - 1)
#define NODES_MASK ((1UL << NODES_WIDTH) - 1)
#define SECTIONS_MASK ((1UL << SECTIONS_WIDTH) - 1)
@ -947,9 +938,10 @@ static inline bool is_zone_device_page(const struct page *page)
#endif
#ifdef CONFIG_DEV_PAGEMAP_OPS
void __put_devmap_managed_page(struct page *page);
void free_devmap_managed_page(struct page *page);
DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
static inline bool put_devmap_managed_page(struct page *page)
static inline bool page_is_devmap_managed(struct page *page)
{
if (!static_branch_unlikely(&devmap_managed_key))
return false;
@ -958,7 +950,6 @@ static inline bool put_devmap_managed_page(struct page *page)
switch (page->pgmap->type) {
case MEMORY_DEVICE_PRIVATE:
case MEMORY_DEVICE_FS_DAX:
__put_devmap_managed_page(page);
return true;
default:
break;
@ -966,11 +957,17 @@ static inline bool put_devmap_managed_page(struct page *page)
return false;
}
void put_devmap_managed_page(struct page *page);
#else /* CONFIG_DEV_PAGEMAP_OPS */
static inline bool put_devmap_managed_page(struct page *page)
static inline bool page_is_devmap_managed(struct page *page)
{
return false;
}
static inline void put_devmap_managed_page(struct page *page)
{
}
#endif /* CONFIG_DEV_PAGEMAP_OPS */
static inline bool is_device_private_page(const struct page *page)
@ -1023,37 +1020,37 @@ static inline void put_page(struct page *page)
* need to inform the device driver through callback. See
* include/linux/memremap.h and HMM for details.
*/
if (put_devmap_managed_page(page))
if (page_is_devmap_managed(page)) {
put_devmap_managed_page(page);
return;
}
if (put_page_testzero(page))
__put_page(page);
}
/**
* put_user_page() - release a gup-pinned page
* unpin_user_page() - release a gup-pinned page
* @page: pointer to page to be released
*
* Pages that were pinned via get_user_pages*() must be released via
* either put_user_page(), or one of the put_user_pages*() routines
* below. This is so that eventually, pages that are pinned via
* get_user_pages*() can be separately tracked and uniquely handled. In
* particular, interactions with RDMA and filesystems need special
* handling.
* Pages that were pinned via pin_user_pages*() must be released via either
* unpin_user_page(), or one of the unpin_user_pages*() routines. This is so
* that eventually such pages can be separately tracked and uniquely handled. In
* particular, interactions with RDMA and filesystems need special handling.
*
* put_user_page() and put_page() are not interchangeable, despite this early
* implementation that makes them look the same. put_user_page() calls must
* be perfectly matched up with get_user_page() calls.
* unpin_user_page() and put_page() are not interchangeable, despite this early
* implementation that makes them look the same. unpin_user_page() calls must
* be perfectly matched up with pin*() calls.
*/
static inline void put_user_page(struct page *page)
static inline void unpin_user_page(struct page *page)
{
put_page(page);
}
void put_user_pages_dirty_lock(struct page **pages, unsigned long npages,
void unpin_user_pages_dirty_lock(struct page **pages, unsigned long npages,
bool make_dirty);
void put_user_pages(struct page **pages, unsigned long npages);
void unpin_user_pages(struct page **pages, unsigned long npages);
#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
#define SECTION_IN_PAGE_FLAGS
@ -1501,9 +1498,16 @@ long get_user_pages_remote(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages,
struct vm_area_struct **vmas, int *locked);
long pin_user_pages_remote(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages,
struct vm_area_struct **vmas, int *locked);
long get_user_pages(unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages,
struct vm_area_struct **vmas);
long pin_user_pages(unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages,
struct vm_area_struct **vmas);
long get_user_pages_locked(unsigned long start, unsigned long nr_pages,
unsigned int gup_flags, struct page **pages, int *locked);
long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
@ -1511,6 +1515,8 @@ long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
int get_user_pages_fast(unsigned long start, int nr_pages,
unsigned int gup_flags, struct page **pages);
int pin_user_pages_fast(unsigned long start, int nr_pages,
unsigned int gup_flags, struct page **pages);
int account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc);
int __account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc,
@ -2575,13 +2581,15 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
#define FOLL_ANON 0x8000 /* don't do file mappings */
#define FOLL_LONGTERM 0x10000 /* mapping lifetime is indefinite: see below */
#define FOLL_SPLIT_PMD 0x20000 /* split huge pmd before returning */
#define FOLL_PIN 0x40000 /* pages must be released via unpin_user_page */
/*
* NOTE on FOLL_LONGTERM:
* FOLL_PIN and FOLL_LONGTERM may be used in various combinations with each
* other. Here is what they mean, and how to use them:
*
* FOLL_LONGTERM indicates that the page will be held for an indefinite time
* period _often_ under userspace control. This is contrasted with
* iov_iter_get_pages() where usages which are transient.
* period _often_ under userspace control. This is in contrast to
* iov_iter_get_pages(), whose usages are transient.
*
* FIXME: For pages which are part of a filesystem, mappings are subject to the
* lifetime enforced by the filesystem and we need guarantees that longterm
@ -2596,11 +2604,39 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
* Currently only get_user_pages() and get_user_pages_fast() support this flag
* and calls to get_user_pages_[un]locked are specifically not allowed. This
* is due to an incompatibility with the FS DAX check and
* FAULT_FLAG_ALLOW_RETRY
* FAULT_FLAG_ALLOW_RETRY.
*
* In the CMA case: long term pins in a CMA region would unnecessarily fragment
* that region. And so CMA attempts to migrate the page before pinning when
* that region. And so, CMA attempts to migrate the page before pinning, when
* FOLL_LONGTERM is specified.
*
* FOLL_PIN indicates that a special kind of tracking (not just page->_refcount,
* but an additional pin counting system) will be invoked. This is intended for
* anything that gets a page reference and then touches page data (for example,
* Direct IO). This lets the filesystem know that some non-file-system entity is
* potentially changing the pages' data. In contrast to FOLL_GET (whose pages
* are released via put_page()), FOLL_PIN pages must be released, ultimately, by
* a call to unpin_user_page().
*
* FOLL_PIN is similar to FOLL_GET: both of these pin pages. They use different
* and separate refcounting mechanisms, however, and that means that each has
* its own acquire and release mechanisms:
*
* FOLL_GET: get_user_pages*() to acquire, and put_page() to release.
*
* FOLL_PIN: pin_user_pages*() to acquire, and unpin_user_pages to release.
*
* FOLL_PIN and FOLL_GET are mutually exclusive for a given function call.
* (The underlying pages may experience both FOLL_GET-based and FOLL_PIN-based
* calls applied to them, and that's perfectly OK. This is a constraint on the
* callers, not on the pages.)
*
* FOLL_PIN should be set internally by the pin_user_pages*() APIs, never
* directly by the caller. That's in order to help avoid mismatches when
* releasing pages: get_user_pages*() pages must be released via put_page(),
* while pin_user_pages*() pages must be released via unpin_user_page().
*
* Please see Documentation/vm/pin_user_pages.rst for more information.
*/
static inline int vm_fault_to_errno(vm_fault_t vm_fault, int foll_flags)

2
include/linux/mmzone.h
Просмотреть файл

@ -758,7 +758,7 @@ typedef struct pglist_data {
#ifdef CONFIG_NUMA
/*
* zone reclaim becomes active if more unmapped pages exist.
* node reclaim becomes active if more unmapped pages exist.
*/
unsigned long min_unmapped_pages;
unsigned long min_slab_pages;

2
include/linux/page-isolation.h
Просмотреть файл

@ -33,7 +33,7 @@ static inline bool is_migrate_isolate(int migratetype)
#define MEMORY_OFFLINE 0x1
#define REPORT_FAILURE 0x2
bool has_unmovable_pages(struct zone *zone, struct page *page, int count,
struct page *has_unmovable_pages(struct zone *zone, struct page *page,
int migratetype, int flags);
void set_pageblock_migratetype(struct page *page, int migratetype);
int move_freepages_block(struct zone *zone, struct page *page,

1
include/linux/swab.h
Просмотреть файл

@ -7,6 +7,7 @@
# define swab16 __swab16
# define swab32 __swab32
# define swab64 __swab64
# define swab __swab
# define swahw32 __swahw32
# define swahb32 __swahb32
# define swab16p __swab16p

11
include/linux/thermal.h
Просмотреть файл

@ -32,17 +32,6 @@
/* use value, which < 0K, to indicate an invalid/uninitialized temperature */
#define THERMAL_TEMP_INVALID -274000
/* Unit conversion macros */
#define DECI_KELVIN_TO_CELSIUS(t) ({ \
long _t = (t); \
((_t-2732 >= 0) ? (_t-2732+5)/10 : (_t-2732-5)/10); \
})
#define CELSIUS_TO_DECI_KELVIN(t) ((t)*10+2732)
#define DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, off) (((t) - (off)) * 100)
#define DECI_KELVIN_TO_MILLICELSIUS(t) DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, 2732)
#define MILLICELSIUS_TO_DECI_KELVIN_WITH_OFFSET(t, off) (((t) / 100) + (off))
#define MILLICELSIUS_TO_DECI_KELVIN(t) MILLICELSIUS_TO_DECI_KELVIN_WITH_OFFSET(t, 2732)
/* Default Thermal Governor */
#if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE)
#define DEFAULT_THERMAL_GOVERNOR "step_wise"

84
include/linux/units.h Normal file
Просмотреть файл

@ -0,0 +1,84 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_UNITS_H
#define _LINUX_UNITS_H
#include <linux/kernel.h>
#define ABSOLUTE_ZERO_MILLICELSIUS -273150
static inline long milli_kelvin_to_millicelsius(long t)
{
return t + ABSOLUTE_ZERO_MILLICELSIUS;
}
static inline long millicelsius_to_milli_kelvin(long t)
{
return t - ABSOLUTE_ZERO_MILLICELSIUS;
}
#define MILLIDEGREE_PER_DEGREE 1000
#define MILLIDEGREE_PER_DECIDEGREE 100
static inline long kelvin_to_millicelsius(long t)
{
return milli_kelvin_to_millicelsius(t * MILLIDEGREE_PER_DEGREE);
}
static inline long millicelsius_to_kelvin(long t)
{
t = millicelsius_to_milli_kelvin(t);
return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DEGREE);
}
static inline long deci_kelvin_to_celsius(long t)
{
t = milli_kelvin_to_millicelsius(t * MILLIDEGREE_PER_DECIDEGREE);
return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DEGREE);
}
static inline long celsius_to_deci_kelvin(long t)
{
t = millicelsius_to_milli_kelvin(t * MILLIDEGREE_PER_DEGREE);
return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DECIDEGREE);
}
/**
* deci_kelvin_to_millicelsius_with_offset - convert Kelvin to Celsius
* @t: temperature value in decidegrees Kelvin
* @offset: difference between Kelvin and Celsius in millidegrees
*
* Return: temperature value in millidegrees Celsius
*/
static inline long deci_kelvin_to_millicelsius_with_offset(long t, long offset)
{
return t * MILLIDEGREE_PER_DECIDEGREE - offset;
}
static inline long deci_kelvin_to_millicelsius(long t)
{
return milli_kelvin_to_millicelsius(t * MILLIDEGREE_PER_DECIDEGREE);
}
static inline long millicelsius_to_deci_kelvin(long t)
{
t = millicelsius_to_milli_kelvin(t);
return DIV_ROUND_CLOSEST(t, MILLIDEGREE_PER_DECIDEGREE);
}
static inline long kelvin_to_celsius(long t)
{
return t + DIV_ROUND_CLOSEST(ABSOLUTE_ZERO_MILLICELSIUS,
MILLIDEGREE_PER_DEGREE);
}
static inline long celsius_to_kelvin(long t)
{
return t - DIV_ROUND_CLOSEST(ABSOLUTE_ZERO_MILLICELSIUS,
MILLIDEGREE_PER_DEGREE);
}
#endif /* _LINUX_UNITS_H */

6
include/linux/zlib.h
Просмотреть файл

@ -191,6 +191,12 @@ extern int zlib_deflate_workspacesize (int windowBits, int memLevel);
exceed those passed here.
*/
extern int zlib_deflate_dfltcc_enabled (void);
/*
Returns 1 if Deflate-Conversion facility is installed and enabled,
otherwise 0.
*/
/*
extern int deflateInit (z_streamp strm, int level);

4
include/trace/events/kmem.h
Просмотреть файл

@ -88,8 +88,8 @@ DECLARE_EVENT_CLASS(kmem_alloc_node,
__entry->node = node;
),
TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d",
__entry->call_site,
TP_printk("call_site=%pS ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d",
(void *)__entry->call_site,
__entry->ptr,
__entry->bytes_req,
__entry->bytes_alloc,

37
include/trace/events/writeback.h
Просмотреть файл

@ -67,8 +67,8 @@ DECLARE_EVENT_CLASS(writeback_page_template,
TP_fast_assign(
strscpy_pad(__entry->name,
mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)",
32);
bdi_dev_name(mapping ? inode_to_bdi(mapping->host) :
NULL), 32);
__entry->ino = mapping ? mapping->host->i_ino : 0;
__entry->index = page->index;
),
@ -111,8 +111,7 @@ DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
struct backing_dev_info *bdi = inode_to_bdi(inode);
/* may be called for files on pseudo FSes w/ unregistered bdi */
strscpy_pad(__entry->name,
bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
__entry->ino = inode->i_ino;
__entry->state = inode->i_state;
__entry->flags = flags;
@ -193,7 +192,7 @@ TRACE_EVENT(inode_foreign_history,
),
TP_fast_assign(
strncpy(__entry->name, dev_name(inode_to_bdi(inode)->dev), 32);
strncpy(__entry->name, bdi_dev_name(inode_to_bdi(inode)), 32);
__entry->ino = inode->i_ino;
__entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
__entry->history = history;
@ -222,7 +221,7 @@ TRACE_EVENT(inode_switch_wbs,
),
TP_fast_assign(
strncpy(__entry->name, dev_name(old_wb->bdi->dev), 32);
strncpy(__entry->name, bdi_dev_name(old_wb->bdi), 32);
__entry->ino = inode->i_ino;
__entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb);
__entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb);
@ -255,7 +254,7 @@ TRACE_EVENT(track_foreign_dirty,
struct address_space *mapping = page_mapping(page);
struct inode *inode = mapping ? mapping->host : NULL;
strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
strncpy(__entry->name, bdi_dev_name(wb->bdi), 32);
__entry->bdi_id = wb->bdi->id;
__entry->ino = inode ? inode->i_ino : 0;
__entry->memcg_id = wb->memcg_css->id;
@ -288,7 +287,7 @@ TRACE_EVENT(flush_foreign,
),
TP_fast_assign(
strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
strncpy(__entry->name, bdi_dev_name(wb->bdi), 32);
__entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
__entry->frn_bdi_id = frn_bdi_id;
__entry->frn_memcg_id = frn_memcg_id;
@ -318,7 +317,7 @@ DECLARE_EVENT_CLASS(writeback_write_inode_template,
TP_fast_assign(
strscpy_pad(__entry->name,
dev_name(inode_to_bdi(inode)->dev), 32);
bdi_dev_name(inode_to_bdi(inode)), 32);
__entry->ino = inode->i_ino;
__entry->sync_mode = wbc->sync_mode;
__entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
@ -361,9 +360,7 @@ DECLARE_EVENT_CLASS(writeback_work_class,
__field(ino_t, cgroup_ino)
),
TP_fast_assign(
strscpy_pad(__entry->name,
wb->bdi->dev ? dev_name(wb->bdi->dev) :
"(unknown)", 32);
strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
__entry->nr_pages = work->nr_pages;
__entry->sb_dev = work->sb ? work->sb->s_dev : 0;
__entry->sync_mode = work->sync_mode;
@ -416,7 +413,7 @@ DECLARE_EVENT_CLASS(writeback_class,
__field(ino_t, cgroup_ino)
),
TP_fast_assign(
strscpy_pad(__entry->name, dev_name(wb->bdi->dev), 32);
strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
__entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
),
TP_printk("bdi %s: cgroup_ino=%lu",
@ -438,7 +435,7 @@ TRACE_EVENT(writeback_bdi_register,
__array(char, name, 32)
),
TP_fast_assign(
strscpy_pad(__entry->name, dev_name(bdi->dev), 32);
strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
),
TP_printk("bdi %s",
__entry->name
@ -463,7 +460,7 @@ DECLARE_EVENT_CLASS(wbc_class,
),
TP_fast_assign(
strscpy_pad(__entry->name, dev_name(bdi->dev), 32);
strscpy_pad(__entry->name, bdi_dev_name(bdi), 32);
__entry->nr_to_write = wbc->nr_to_write;
__entry->pages_skipped = wbc->pages_skipped;
__entry->sync_mode = wbc->sync_mode;
@ -514,7 +511,7 @@ TRACE_EVENT(writeback_queue_io,
),
TP_fast_assign(
unsigned long *older_than_this = work->older_than_this;
strscpy_pad(__entry->name, dev_name(wb->bdi->dev), 32);
strscpy_pad(__entry->name, bdi_dev_name(wb->bdi), 32);
__entry->older = older_than_this ? *older_than_this : 0;
__entry->age = older_than_this ?
(jiffies - *older_than_this) * 1000 / HZ : -1;
@ -600,7 +597,7 @@ TRACE_EVENT(bdi_dirty_ratelimit,
),
TP_fast_assign(
strscpy_pad(__entry->bdi, dev_name(wb->bdi->dev), 32);
strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
__entry->write_bw = KBps(wb->write_bandwidth);
__entry->avg_write_bw = KBps(wb->avg_write_bandwidth);
__entry->dirty_rate = KBps(dirty_rate);
@ -665,7 +662,7 @@ TRACE_EVENT(balance_dirty_pages,
TP_fast_assign(
unsigned long freerun = (thresh + bg_thresh) / 2;
strscpy_pad(__entry->bdi, dev_name(wb->bdi->dev), 32);
strscpy_pad(__entry->bdi, bdi_dev_name(wb->bdi), 32);
__entry->limit = global_wb_domain.dirty_limit;
__entry->setpoint = (global_wb_domain.dirty_limit +
@ -726,7 +723,7 @@ TRACE_EVENT(writeback_sb_inodes_requeue,
TP_fast_assign(
strscpy_pad(__entry->name,
dev_name(inode_to_bdi(inode)->dev), 32);
bdi_dev_name(inode_to_bdi(inode)), 32);
__entry->ino = inode->i_ino;
__entry->state = inode->i_state;
__entry->dirtied_when = inode->dirtied_when;
@ -800,7 +797,7 @@ DECLARE_EVENT_CLASS(writeback_single_inode_template,
TP_fast_assign(
strscpy_pad(__entry->name,
dev_name(inode_to_bdi(inode)->dev), 32);
bdi_dev_name(inode_to_bdi(inode)), 32);
__entry->ino = inode->i_ino;
__entry->state = inode->i_state;
__entry->dirtied_when = inode->dirtied_when;

10
include/uapi/linux/swab.h
Просмотреть файл

@ -4,6 +4,7 @@
#include <linux/types.h>
#include <linux/compiler.h>
#include <asm/bitsperlong.h>
#include <asm/swab.h>
/*
@ -132,6 +133,15 @@ static inline __attribute_const__ __u32 __fswahb32(__u32 val)
__fswab64(x))
#endif
static __always_inline unsigned long __swab(const unsigned long y)
{
#if BITS_PER_LONG == 64
return __swab64(y);
#else /* BITS_PER_LONG == 32 */
return __swab32(y);
#endif
}
/**
* __swahw32 - return a word-swapped 32-bit value
* @x: value to wordswap

2
include/uapi/linux/sysctl.h
Просмотреть файл

@ -195,7 +195,7 @@ enum
VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */
VM_PANIC_ON_OOM=33, /* panic at out-of-memory */
VM_VDSO_ENABLED=34, /* map VDSO into new processes? */
VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */
VM_MIN_SLAB=35, /* Percent pages ignored by node reclaim */
};

36
init/main.c
Просмотреть файл

@ -246,8 +246,7 @@ static int __init loglevel(char *str)
early_param("loglevel", loglevel);
/* Change NUL term back to "=", to make "param" the whole string. */
static int __init repair_env_string(char *param, char *val,
const char *unused, void *arg)
static void __init repair_env_string(char *param, char *val)
{
if (val) {
/* param=val or param="val"? */
@ -256,11 +255,9 @@ static int __init repair_env_string(char *param, char *val,
else if (val == param+strlen(param)+2) {
val[-2] = '=';
memmove(val-1, val, strlen(val)+1);
val--;
} else
BUG();
}
return 0;
}
/* Anything after -- gets handed straight to init. */
@ -272,7 +269,7 @@ static int __init set_init_arg(char *param, char *val,
if (panic_later)
return 0;
repair_env_string(param, val, unused, NULL);
repair_env_string(param, val);
for (i = 0; argv_init[i]; i++) {
if (i == MAX_INIT_ARGS) {
@ -292,14 +289,16 @@ static int __init set_init_arg(char *param, char *val,
static int __init unknown_bootoption(char *param, char *val,
const char *unused, void *arg)
{
repair_env_string(param, val, unused, NULL);
size_t len = strlen(param);
repair_env_string(param, val);
/* Handle obsolete-style parameters */
if (obsolete_checksetup(param))
return 0;
/* Unused module parameter. */
if (strchr(param, '.') && (!val || strchr(param, '.') < val))
if (strnchr(param, len, '.'))
return 0;
if (panic_later)
@ -313,7 +312,7 @@ static int __init unknown_bootoption(char *param, char *val,
panic_later = "env";
panic_param = param;
}
if (!strncmp(param, envp_init[i], val - param))
if (!strncmp(param, envp_init[i], len+1))
break;
}
envp_init[i] = param;
@ -991,6 +990,12 @@ static const char *initcall_level_names[] __initdata = {
"late",
};
static int __init ignore_unknown_bootoption(char *param, char *val,
const char *unused, void *arg)
{
return 0;
}
static void __init do_initcall_level(int level)
{
initcall_entry_t *fn;
@ -1000,7 +1005,7 @@ static void __init do_initcall_level(int level)
initcall_command_line, __start___param,
__stop___param - __start___param,
level, level,
NULL, &repair_env_string);
NULL, ignore_unknown_bootoption);
trace_initcall_level(initcall_level_names[level]);
for (fn = initcall_levels[level]; fn < initcall_levels[level+1]; fn++)
@ -1043,8 +1048,16 @@ static void __init do_pre_smp_initcalls(void)
static int run_init_process(const char *init_filename)
{
const char *const *p;
argv_init[0] = init_filename;
pr_info("Run %s as init process\n", init_filename);
pr_debug(" with arguments:\n");
for (p = argv_init; *p; p++)
pr_debug(" %s\n", *p);
pr_debug(" with environment:\n");
for (p = envp_init; *p; p++)
pr_debug(" %s\n", *p);
return do_execve(getname_kernel(init_filename),
(const char __user *const __user *)argv_init,
(const char __user *const __user *)envp_init);
@ -1091,6 +1104,11 @@ static void mark_readonly(void)
} else
pr_info("Kernel memory protection disabled.\n");
}
#elif defined(CONFIG_ARCH_HAS_STRICT_KERNEL_RWX)
static inline void mark_readonly(void)
{
pr_warn("Kernel memory protection not selected by kernel config.\n");
}
#else
static inline void mark_readonly(void)
{

1
kernel/Makefile
Просмотреть файл

@ -27,6 +27,7 @@ KCOV_INSTRUMENT_softirq.o := n
# and produce insane amounts of uninteresting coverage.
KCOV_INSTRUMENT_module.o := n
KCOV_INSTRUMENT_extable.o := n
KCOV_INSTRUMENT_stacktrace.o := n
# Don't self-instrument.
KCOV_INSTRUMENT_kcov.o := n
KASAN_SANITIZE_kcov.o := n

7
lib/Kconfig
Просмотреть файл

@ -278,6 +278,13 @@ config ZLIB_DEFLATE
tristate
select BITREVERSE
config ZLIB_DFLTCC
def_bool y
depends on S390
prompt "Enable s390x DEFLATE CONVERSION CALL support for kernel zlib"
help
Enable s390x hardware support for zlib in the kernel.
config LZO_COMPRESS
tristate

2
lib/Makefile
Просмотреть файл

@ -16,6 +16,7 @@ KCOV_INSTRUMENT_rbtree.o := n
KCOV_INSTRUMENT_list_debug.o := n
KCOV_INSTRUMENT_debugobjects.o := n
KCOV_INSTRUMENT_dynamic_debug.o := n
KCOV_INSTRUMENT_fault-inject.o := n
# Early boot use of cmdline, don't instrument it
ifdef CONFIG_AMD_MEM_ENCRYPT
@ -140,6 +141,7 @@ obj-$(CONFIG_842_COMPRESS) += 842/
obj-$(CONFIG_842_DECOMPRESS) += 842/
obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/
obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc/
obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
obj-$(CONFIG_BCH) += bch.o
obj-$(CONFIG_LZO_COMPRESS) += lzo/

13
lib/decompress_inflate.c
Просмотреть файл

@ -10,6 +10,10 @@
#include "zlib_inflate/inftrees.c"
#include "zlib_inflate/inffast.c"
#include "zlib_inflate/inflate.c"
#ifdef CONFIG_ZLIB_DFLTCC
#include "zlib_dfltcc/dfltcc.c"
#include "zlib_dfltcc/dfltcc_inflate.c"
#endif
#else /* STATIC */
/* initramfs et al: linked */
@ -76,7 +80,12 @@ STATIC int INIT __gunzip(unsigned char *buf, long len,
}
strm->workspace = malloc(flush ? zlib_inflate_workspacesize() :
#ifdef CONFIG_ZLIB_DFLTCC
/* Always allocate the full workspace for DFLTCC */
zlib_inflate_workspacesize());
#else
sizeof(struct inflate_state));
#endif
if (strm->workspace == NULL) {
error("Out of memory while allocating workspace");
goto gunzip_nomem4;
@ -123,10 +132,14 @@ STATIC int INIT __gunzip(unsigned char *buf, long len,
rc = zlib_inflateInit2(strm, -MAX_WBITS);
#ifdef CONFIG_ZLIB_DFLTCC
/* Always keep the window for DFLTCC */
#else
if (!flush) {
WS(strm)->inflate_state.wsize = 0;
WS(strm)->inflate_state.window = NULL;
}
#endif
while (rc == Z_OK) {
if (strm->avail_in == 0) {

74
lib/find_bit.c
Просмотреть файл

@ -18,8 +18,8 @@
#include <linux/kernel.h>
#if !defined(find_next_bit) || !defined(find_next_zero_bit) || \
!defined(find_next_bit_le) || !defined(find_next_zero_bit_le) || \
!defined(find_next_and_bit)
/*
* This is a common helper function for find_next_bit, find_next_zero_bit, and
* find_next_and_bit. The differences are:
@ -27,11 +27,11 @@
* searching it for one bits.
* - The optional "addr2", which is anded with "addr1" if present.
*/
static inline unsigned long _find_next_bit(const unsigned long *addr1,
static unsigned long _find_next_bit(const unsigned long *addr1,
const unsigned long *addr2, unsigned long nbits,
unsigned long start, unsigned long invert)
unsigned long start, unsigned long invert, unsigned long le)
{
unsigned long tmp;
unsigned long tmp, mask;
if (unlikely(start >= nbits))
return nbits;
@ -42,7 +42,12 @@ static inline unsigned long _find_next_bit(const unsigned long *addr1,
tmp ^= invert;
/* Handle 1st word. */
tmp &= BITMAP_FIRST_WORD_MASK(start);
mask = BITMAP_FIRST_WORD_MASK(start);
if (le)
mask = swab(mask);
tmp &= mask;
start = round_down(start, BITS_PER_LONG);
while (!tmp) {
@ -56,6 +61,9 @@ static inline unsigned long _find_next_bit(const unsigned long *addr1,
tmp ^= invert;
}
if (le)
tmp = swab(tmp);
return min(start + __ffs(tmp), nbits);
}
#endif
@ -67,7 +75,7 @@ static inline unsigned long _find_next_bit(const unsigned long *addr1,
unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
unsigned long offset)
{
return _find_next_bit(addr, NULL, size, offset, 0UL);
return _find_next_bit(addr, NULL, size, offset, 0UL, 0);
}
EXPORT_SYMBOL(find_next_bit);
#endif
@ -76,7 +84,7 @@ EXPORT_SYMBOL(find_next_bit);
unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
unsigned long offset)
{
return _find_next_bit(addr, NULL, size, offset, ~0UL);
return _find_next_bit(addr, NULL, size, offset, ~0UL, 0);
}
EXPORT_SYMBOL(find_next_zero_bit);
#endif
@ -86,7 +94,7 @@ unsigned long find_next_and_bit(const unsigned long *addr1,
const unsigned long *addr2, unsigned long size,
unsigned long offset)
{
return _find_next_bit(addr1, addr2, size, offset, 0UL);
return _find_next_bit(addr1, addr2, size, offset, 0UL, 0);
}
EXPORT_SYMBOL(find_next_and_bit);
#endif
@ -149,57 +157,11 @@ EXPORT_SYMBOL(find_last_bit);
#ifdef __BIG_ENDIAN
/* include/linux/byteorder does not support "unsigned long" type */
static inline unsigned long ext2_swab(const unsigned long y)
{
#if BITS_PER_LONG == 64
return (unsigned long) __swab64((u64) y);
#elif BITS_PER_LONG == 32
return (unsigned long) __swab32((u32) y);
#else
#error BITS_PER_LONG not defined
#endif
}
#if !defined(find_next_bit_le) || !defined(find_next_zero_bit_le)
static inline unsigned long _find_next_bit_le(const unsigned long *addr1,
const unsigned long *addr2, unsigned long nbits,
unsigned long start, unsigned long invert)
{
unsigned long tmp;
if (unlikely(start >= nbits))
return nbits;
tmp = addr1[start / BITS_PER_LONG];
if (addr2)
tmp &= addr2[start / BITS_PER_LONG];
tmp ^= invert;
/* Handle 1st word. */
tmp &= ext2_swab(BITMAP_FIRST_WORD_MASK(start));
start = round_down(start, BITS_PER_LONG);
while (!tmp) {
start += BITS_PER_LONG;
if (start >= nbits)
return nbits;
tmp = addr1[start / BITS_PER_LONG];
if (addr2)
tmp &= addr2[start / BITS_PER_LONG];
tmp ^= invert;
}
return min(start + __ffs(ext2_swab(tmp)), nbits);
}
#endif
#ifndef find_next_zero_bit_le
unsigned long find_next_zero_bit_le(const void *addr, unsigned
long size, unsigned long offset)
{
return _find_next_bit_le(addr, NULL, size, offset, ~0UL);
return _find_next_bit(addr, NULL, size, offset, ~0UL, 1);
}
EXPORT_SYMBOL(find_next_zero_bit_le);
#endif
@ -208,7 +170,7 @@ EXPORT_SYMBOL(find_next_zero_bit_le);
unsigned long find_next_bit_le(const void *addr, unsigned
long size, unsigned long offset)
{
return _find_next_bit_le(addr, NULL, size, offset, 0UL);
return _find_next_bit(addr, NULL, size, offset, 0UL, 1);
}
EXPORT_SYMBOL(find_next_bit_le);
#endif

9
lib/test_bitmap.c
Просмотреть файл

@ -275,22 +275,23 @@ static void __init test_copy(void)
static void __init test_replace(void)
{
unsigned int nbits = 64;
unsigned int nlongs = DIV_ROUND_UP(nbits, BITS_PER_LONG);
DECLARE_BITMAP(bmap, 1024);
bitmap_zero(bmap, 1024);
bitmap_replace(bmap, &exp2[0], &exp2[1], exp2_to_exp3_mask, nbits);
bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits);
expect_eq_bitmap(bmap, exp3_0_1, nbits);
bitmap_zero(bmap, 1024);
bitmap_replace(bmap, &exp2[1], &exp2[0], exp2_to_exp3_mask, nbits);
bitmap_replace(bmap, &exp2[1 * nlongs], &exp2[0 * nlongs], exp2_to_exp3_mask, nbits);
expect_eq_bitmap(bmap, exp3_1_0, nbits);
bitmap_fill(bmap, 1024);
bitmap_replace(bmap, &exp2[0], &exp2[1], exp2_to_exp3_mask, nbits);
bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits);
expect_eq_bitmap(bmap, exp3_0_1, nbits);
bitmap_fill(bmap, 1024);
bitmap_replace(bmap, &exp2[1], &exp2[0], exp2_to_exp3_mask, nbits);
bitmap_replace(bmap, &exp2[1 * nlongs], &exp2[0 * nlongs], exp2_to_exp3_mask, nbits);
expect_eq_bitmap(bmap, exp3_1_0, nbits);
}

1
lib/test_kasan.c
Просмотреть файл

@ -158,6 +158,7 @@ static noinline void __init kmalloc_oob_krealloc_more(void)
if (!ptr1 || !ptr2) {
pr_err("Allocation failed\n");
kfree(ptr1);
kfree(ptr2);
return;
}

85
lib/zlib_deflate/deflate.c
Просмотреть файл

@ -52,16 +52,19 @@
#include <linux/zutil.h>
#include "defutil.h"
/* architecture-specific bits */
#ifdef CONFIG_ZLIB_DFLTCC
# include "../zlib_dfltcc/dfltcc.h"
#else
#define DEFLATE_RESET_HOOK(strm) do {} while (0)
#define DEFLATE_HOOK(strm, flush, bstate) 0
#define DEFLATE_NEED_CHECKSUM(strm) 1
#define DEFLATE_DFLTCC_ENABLED() 0
#endif
/* ===========================================================================
* Function prototypes.
*/
typedef enum {
need_more, /* block not completed, need more input or more output */
block_done, /* block flush performed */
finish_started, /* finish started, need only more output at next deflate */
finish_done /* finish done, accept no more input or output */
} block_state;
typedef block_state (*compress_func) (deflate_state *s, int flush);
/* Compression function. Returns the block state after the call. */
@ -72,7 +75,6 @@ static block_state deflate_fast (deflate_state *s, int flush);
static block_state deflate_slow (deflate_state *s, int flush);
static void lm_init (deflate_state *s);
static void putShortMSB (deflate_state *s, uInt b);
static void flush_pending (z_streamp strm);
static int read_buf (z_streamp strm, Byte *buf, unsigned size);
static uInt longest_match (deflate_state *s, IPos cur_match);
@ -98,6 +100,25 @@ static void check_match (deflate_state *s, IPos start, IPos match,
* See deflate.c for comments about the MIN_MATCH+1.
*/
/* Workspace to be allocated for deflate processing */
typedef struct deflate_workspace {
/* State memory for the deflator */
deflate_state deflate_memory;
#ifdef CONFIG_ZLIB_DFLTCC
/* State memory for s390 hardware deflate */
struct dfltcc_state dfltcc_memory;
#endif
Byte *window_memory;
Pos *prev_memory;
Pos *head_memory;
char *overlay_memory;
} deflate_workspace;
#ifdef CONFIG_ZLIB_DFLTCC
/* dfltcc_state must be doubleword aligned for DFLTCC call */
static_assert(offsetof(struct deflate_workspace, dfltcc_memory) % 8 == 0);
#endif
/* Values for max_lazy_match, good_match and max_chain_length, depending on
* the desired pack level (0..9). The values given below have been tuned to
* exclude worst case performance for pathological files. Better values may be
@ -207,7 +228,15 @@ int zlib_deflateInit2(
*/
next = (char *) mem;
next += sizeof(*mem);
#ifdef CONFIG_ZLIB_DFLTCC
/*
* DFLTCC requires the window to be page aligned.
* Thus, we overallocate and take the aligned portion of the buffer.
*/
mem->window_memory = (Byte *) PTR_ALIGN(next, PAGE_SIZE);
#else
mem->window_memory = (Byte *) next;
#endif
next += zlib_deflate_window_memsize(windowBits);
mem->prev_memory = (Pos *) next;
next += zlib_deflate_prev_memsize(windowBits);
@ -277,6 +306,8 @@ int zlib_deflateReset(
zlib_tr_init(s);
lm_init(s);
DEFLATE_RESET_HOOK(strm);
return Z_OK;
}
@ -294,35 +325,6 @@ static void putShortMSB(
put_byte(s, (Byte)(b & 0xff));
}
/* =========================================================================
* Flush as much pending output as possible. All deflate() output goes
* through this function so some applications may wish to modify it
* to avoid allocating a large strm->next_out buffer and copying into it.
* (See also read_buf()).
*/
static void flush_pending(
z_streamp strm
)
{
deflate_state *s = (deflate_state *) strm->state;
unsigned len = s->pending;
if (len > strm->avail_out) len = strm->avail_out;
if (len == 0) return;
if (strm->next_out != NULL) {
memcpy(strm->next_out, s->pending_out, len);
strm->next_out += len;
}
s->pending_out += len;
strm->total_out += len;
strm->avail_out -= len;
s->pending -= len;
if (s->pending == 0) {
s->pending_out = s->pending_buf;
}
}
/* ========================================================================= */
int zlib_deflate(
z_streamp strm,
@ -404,7 +406,8 @@ int zlib_deflate(
(flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
block_state bstate;
bstate = (*(configuration_table[s->level].func))(s, flush);
bstate = DEFLATE_HOOK(strm, flush, &bstate) ? bstate :
(*(configuration_table[s->level].func))(s, flush);
if (bstate == finish_started || bstate == finish_done) {
s->status = FINISH_STATE;
@ -503,7 +506,8 @@ static int read_buf(
strm->avail_in -= len;
if (!((deflate_state *)(strm->state))->noheader) {
if (!DEFLATE_NEED_CHECKSUM(strm)) {}
else if (!((deflate_state *)(strm->state))->noheader) {
strm->adler = zlib_adler32(strm->adler, strm->next_in, len);
}
memcpy(buf, strm->next_in, len);
@ -1135,3 +1139,8 @@ int zlib_deflate_workspacesize(int windowBits, int memLevel)
+ zlib_deflate_head_memsize(memLevel)
+ zlib_deflate_overlay_memsize(memLevel);
}
int zlib_deflate_dfltcc_enabled(void)
{
return DEFLATE_DFLTCC_ENABLED();
}

1
lib/zlib_deflate/deflate_syms.c
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@ -12,6 +12,7 @@
#include <linux/zlib.h>
EXPORT_SYMBOL(zlib_deflate_workspacesize);
EXPORT_SYMBOL(zlib_deflate_dfltcc_enabled);
EXPORT_SYMBOL(zlib_deflate);
EXPORT_SYMBOL(zlib_deflateInit2);
EXPORT_SYMBOL(zlib_deflateEnd);

54
lib/zlib_deflate/deftree.c
Просмотреть файл

@ -76,11 +76,6 @@ static const uch bl_order[BL_CODES]
* probability, to avoid transmitting the lengths for unused bit length codes.
*/
#define Buf_size (8 * 2*sizeof(char))
/* Number of bits used within bi_buf. (bi_buf might be implemented on
* more than 16 bits on some systems.)
*/
/* ===========================================================================
* Local data. These are initialized only once.
*/
@ -147,7 +142,6 @@ static void send_all_trees (deflate_state *s, int lcodes, int dcodes,
static void compress_block (deflate_state *s, ct_data *ltree,
ct_data *dtree);
static void set_data_type (deflate_state *s);
static void bi_windup (deflate_state *s);
static void bi_flush (deflate_state *s);
static void copy_block (deflate_state *s, char *buf, unsigned len,
int header);
@ -169,54 +163,6 @@ static void copy_block (deflate_state *s, char *buf, unsigned len,
* used.
*/
/* ===========================================================================
* Send a value on a given number of bits.
* IN assertion: length <= 16 and value fits in length bits.
*/
#ifdef DEBUG_ZLIB
static void send_bits (deflate_state *s, int value, int length);
static void send_bits(
deflate_state *s,
int value, /* value to send */
int length /* number of bits */
)
{
Tracevv((stderr," l %2d v %4x ", length, value));
Assert(length > 0 && length <= 15, "invalid length");
s->bits_sent += (ulg)length;
/* If not enough room in bi_buf, use (valid) bits from bi_buf and
* (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
* unused bits in value.
*/
if (s->bi_valid > (int)Buf_size - length) {
s->bi_buf |= (value << s->bi_valid);
put_short(s, s->bi_buf);
s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
s->bi_valid += length - Buf_size;
} else {
s->bi_buf |= value << s->bi_valid;
s->bi_valid += length;
}
}
#else /* !DEBUG_ZLIB */
#define send_bits(s, value, length) \
{ int len = length;\
if (s->bi_valid > (int)Buf_size - len) {\
int val = value;\
s->bi_buf |= (val << s->bi_valid);\
put_short(s, s->bi_buf);\
s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
s->bi_valid += len - Buf_size;\
} else {\
s->bi_buf |= (value) << s->bi_valid;\
s->bi_valid += len;\
}\
}
#endif /* DEBUG_ZLIB */
/* ===========================================================================
* Initialize the various 'constant' tables. In a multi-threaded environment,
* this function may be called by two threads concurrently, but this is

134
lib/zlib_deflate/defutil.h
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@ -1,5 +1,7 @@
#ifndef DEFUTIL_H
#define DEFUTIL_H
#include <linux/zutil.h>
#define Assert(err, str)
#define Trace(dummy)
@ -238,17 +240,13 @@ typedef struct deflate_state {
} deflate_state;
typedef struct deflate_workspace {
/* State memory for the deflator */
deflate_state deflate_memory;
Byte *window_memory;
Pos *prev_memory;
Pos *head_memory;
char *overlay_memory;
} deflate_workspace;
#ifdef CONFIG_ZLIB_DFLTCC
#define zlib_deflate_window_memsize(windowBits) \
(2 * (1 << (windowBits)) * sizeof(Byte) + PAGE_SIZE)
#else
#define zlib_deflate_window_memsize(windowBits) \
(2 * (1 << (windowBits)) * sizeof(Byte))
#endif
#define zlib_deflate_prev_memsize(windowBits) \
((1 << (windowBits)) * sizeof(Pos))
#define zlib_deflate_head_memsize(memLevel) \
@ -292,6 +290,24 @@ void zlib_tr_stored_type_only (deflate_state *);
put_byte(s, (uch)((ush)(w) >> 8)); \
}
/* ===========================================================================
* Reverse the first len bits of a code, using straightforward code (a faster
* method would use a table)
* IN assertion: 1 <= len <= 15
*/
static inline unsigned bi_reverse(
unsigned code, /* the value to invert */
int len /* its bit length */
)
{
register unsigned res = 0;
do {
res |= code & 1;
code >>= 1, res <<= 1;
} while (--len > 0);
return res >> 1;
}
/* ===========================================================================
* Flush the bit buffer, keeping at most 7 bits in it.
*/
@ -325,3 +341,101 @@ static inline void bi_windup(deflate_state *s)
#endif
}
typedef enum {
need_more, /* block not completed, need more input or more output */
block_done, /* block flush performed */
finish_started, /* finish started, need only more output at next deflate */
finish_done /* finish done, accept no more input or output */
} block_state;
#define Buf_size (8 * 2*sizeof(char))
/* Number of bits used within bi_buf. (bi_buf might be implemented on
* more than 16 bits on some systems.)
*/
/* ===========================================================================
* Send a value on a given number of bits.
* IN assertion: length <= 16 and value fits in length bits.
*/
#ifdef DEBUG_ZLIB
static void send_bits (deflate_state *s, int value, int length);
static void send_bits(
deflate_state *s,
int value, /* value to send */
int length /* number of bits */
)
{
Tracevv((stderr," l %2d v %4x ", length, value));
Assert(length > 0 && length <= 15, "invalid length");
s->bits_sent += (ulg)length;
/* If not enough room in bi_buf, use (valid) bits from bi_buf and
* (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
* unused bits in value.
*/
if (s->bi_valid > (int)Buf_size - length) {
s->bi_buf |= (value << s->bi_valid);
put_short(s, s->bi_buf);
s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
s->bi_valid += length - Buf_size;
} else {
s->bi_buf |= value << s->bi_valid;
s->bi_valid += length;
}
}
#else /* !DEBUG_ZLIB */
#define send_bits(s, value, length) \
{ int len = length;\
if (s->bi_valid > (int)Buf_size - len) {\
int val = value;\
s->bi_buf |= (val << s->bi_valid);\
put_short(s, s->bi_buf);\
s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
s->bi_valid += len - Buf_size;\
} else {\
s->bi_buf |= (value) << s->bi_valid;\
s->bi_valid += len;\
}\
}
#endif /* DEBUG_ZLIB */
static inline void zlib_tr_send_bits(
deflate_state *s,
int value,
int length
)
{
send_bits(s, value, length);
}
/* =========================================================================
* Flush as much pending output as possible. All deflate() output goes
* through this function so some applications may wish to modify it
* to avoid allocating a large strm->next_out buffer and copying into it.
* (See also read_buf()).
*/
static inline void flush_pending(
z_streamp strm
)
{
deflate_state *s = (deflate_state *) strm->state;
unsigned len = s->pending;
if (len > strm->avail_out) len = strm->avail_out;
if (len == 0) return;
if (strm->next_out != NULL) {
memcpy(strm->next_out, s->pending_out, len);
strm->next_out += len;
}
s->pending_out += len;
strm->total_out += len;
strm->avail_out -= len;
s->pending -= len;
if (s->pending == 0) {
s->pending_out = s->pending_buf;
}
}
#endif /* DEFUTIL_H */

11
lib/zlib_dfltcc/Makefile Normal file
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@ -0,0 +1,11 @@
# SPDX-License-Identifier: GPL-2.0-only
#
# This is a modified version of zlib, which does all memory
# allocation ahead of time.
#
# This is the code for s390 zlib hardware support.
#
obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc.o
zlib_dfltcc-objs := dfltcc.o dfltcc_deflate.o dfltcc_inflate.o dfltcc_syms.o

55
lib/zlib_dfltcc/dfltcc.c Normal file
Просмотреть файл

@ -0,0 +1,55 @@
// SPDX-License-Identifier: Zlib
/* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */
#include <linux/zutil.h>
#include "dfltcc_util.h"
#include "dfltcc.h"
char *oesc_msg(
char *buf,
int oesc
)
{
if (oesc == 0x00)
return NULL; /* Successful completion */
else {
#ifdef STATIC
return NULL; /* Ignore for pre-boot decompressor */
#else
sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc);
return buf;
#endif
}
}
void dfltcc_reset(
z_streamp strm,
uInt size
)
{
struct dfltcc_state *dfltcc_state =
(struct dfltcc_state *)((char *)strm->state + size);
struct dfltcc_qaf_param *param =
(struct dfltcc_qaf_param *)&dfltcc_state->param;
/* Initialize available functions */
if (is_dfltcc_enabled()) {
dfltcc(DFLTCC_QAF, param, NULL, NULL, NULL, NULL, NULL);
memmove(&dfltcc_state->af, param, sizeof(dfltcc_state->af));
} else
memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af));
/* Initialize parameter block */
memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param));
dfltcc_state->param.nt = 1;
/* Initialize tuning parameters */
if (zlib_dfltcc_support == ZLIB_DFLTCC_FULL_DEBUG)
dfltcc_state->level_mask = DFLTCC_LEVEL_MASK_DEBUG;
else
dfltcc_state->level_mask = DFLTCC_LEVEL_MASK;
dfltcc_state->block_size = DFLTCC_BLOCK_SIZE;
dfltcc_state->block_threshold = DFLTCC_FIRST_FHT_BLOCK_SIZE;
dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE;
dfltcc_state->param.ribm = DFLTCC_RIBM;
}

155
lib/zlib_dfltcc/dfltcc.h Normal file
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@ -0,0 +1,155 @@
// SPDX-License-Identifier: Zlib
#ifndef DFLTCC_H
#define DFLTCC_H
#include "../zlib_deflate/defutil.h"
#include <asm/facility.h>
#include <asm/setup.h>
/*
* Tuning parameters.
*/
#define DFLTCC_LEVEL_MASK 0x2 /* DFLTCC compression for level 1 only */
#define DFLTCC_LEVEL_MASK_DEBUG 0x3fe /* DFLTCC compression for all levels */
#define DFLTCC_BLOCK_SIZE 1048576
#define DFLTCC_FIRST_FHT_BLOCK_SIZE 4096
#define DFLTCC_DHT_MIN_SAMPLE_SIZE 4096
#define DFLTCC_RIBM 0
#define DFLTCC_FACILITY 151
/*
* Parameter Block for Query Available Functions.
*/
struct dfltcc_qaf_param {
char fns[16];
char reserved1[8];
char fmts[2];
char reserved2[6];
};
static_assert(sizeof(struct dfltcc_qaf_param) == 32);
#define DFLTCC_FMT0 0
/*
* Parameter Block for Generate Dynamic-Huffman Table, Compress and Expand.
*/
struct dfltcc_param_v0 {
uint16_t pbvn; /* Parameter-Block-Version Number */
uint8_t mvn; /* Model-Version Number */
uint8_t ribm; /* Reserved for IBM use */
unsigned reserved32 : 31;
unsigned cf : 1; /* Continuation Flag */
uint8_t reserved64[8];
unsigned nt : 1; /* New Task */
unsigned reserved129 : 1;
unsigned cvt : 1; /* Check Value Type */
unsigned reserved131 : 1;
unsigned htt : 1; /* Huffman-Table Type */
unsigned bcf : 1; /* Block-Continuation Flag */
unsigned bcc : 1; /* Block Closing Control */
unsigned bhf : 1; /* Block Header Final */
unsigned reserved136 : 1;
unsigned reserved137 : 1;
unsigned dhtgc : 1; /* DHT Generation Control */
unsigned reserved139 : 5;
unsigned reserved144 : 5;
unsigned sbb : 3; /* Sub-Byte Boundary */
uint8_t oesc; /* Operation-Ending-Supplemental Code */
unsigned reserved160 : 12;
unsigned ifs : 4; /* Incomplete-Function Status */
uint16_t ifl; /* Incomplete-Function Length */
uint8_t reserved192[8];
uint8_t reserved256[8];
uint8_t reserved320[4];
uint16_t hl; /* History Length */
unsigned reserved368 : 1;
uint16_t ho : 15; /* History Offset */
uint32_t cv; /* Check Value */
unsigned eobs : 15; /* End-of-block Symbol */
unsigned reserved431: 1;
uint8_t eobl : 4; /* End-of-block Length */
unsigned reserved436 : 12;
unsigned reserved448 : 4;
uint16_t cdhtl : 12; /* Compressed-Dynamic-Huffman Table
Length */
uint8_t reserved464[6];
uint8_t cdht[288];
uint8_t reserved[32];
uint8_t csb[1152];
};
static_assert(sizeof(struct dfltcc_param_v0) == 1536);
#define CVT_CRC32 0
#define CVT_ADLER32 1
#define HTT_FIXED 0
#define HTT_DYNAMIC 1
/*
* Extension of inflate_state and deflate_state for DFLTCC.
*/
struct dfltcc_state {
struct dfltcc_param_v0 param; /* Parameter block */
struct dfltcc_qaf_param af; /* Available functions */
uLong level_mask; /* Levels on which to use DFLTCC */
uLong block_size; /* New block each X bytes */
uLong block_threshold; /* New block after total_in > X */
uLong dht_threshold; /* New block only if avail_in >= X */
char msg[64]; /* Buffer for strm->msg */
};
/* Resides right after inflate_state or deflate_state */
#define GET_DFLTCC_STATE(state) ((struct dfltcc_state *)((state) + 1))
/* External functions */
int dfltcc_can_deflate(z_streamp strm);
int dfltcc_deflate(z_streamp strm,
int flush,
block_state *result);
void dfltcc_reset(z_streamp strm, uInt size);
int dfltcc_can_inflate(z_streamp strm);
typedef enum {
DFLTCC_INFLATE_CONTINUE,
DFLTCC_INFLATE_BREAK,
DFLTCC_INFLATE_SOFTWARE,
} dfltcc_inflate_action;
dfltcc_inflate_action dfltcc_inflate(z_streamp strm,
int flush, int *ret);
static inline int is_dfltcc_enabled(void)
{
return (zlib_dfltcc_support != ZLIB_DFLTCC_DISABLED &&
test_facility(DFLTCC_FACILITY));
}
#define DEFLATE_RESET_HOOK(strm) \
dfltcc_reset((strm), sizeof(deflate_state))
#define DEFLATE_HOOK dfltcc_deflate
#define DEFLATE_NEED_CHECKSUM(strm) (!dfltcc_can_deflate((strm)))
#define DEFLATE_DFLTCC_ENABLED() is_dfltcc_enabled()
#define INFLATE_RESET_HOOK(strm) \
dfltcc_reset((strm), sizeof(struct inflate_state))
#define INFLATE_TYPEDO_HOOK(strm, flush) \
if (dfltcc_can_inflate((strm))) { \
dfltcc_inflate_action action; \
\
RESTORE(); \
action = dfltcc_inflate((strm), (flush), &ret); \
LOAD(); \
if (action == DFLTCC_INFLATE_CONTINUE) \
break; \
else if (action == DFLTCC_INFLATE_BREAK) \
goto inf_leave; \
}
#define INFLATE_NEED_CHECKSUM(strm) (!dfltcc_can_inflate((strm)))
#define INFLATE_NEED_UPDATEWINDOW(strm) (!dfltcc_can_inflate((strm)))
#endif /* DFLTCC_H */

279
lib/zlib_dfltcc/dfltcc_deflate.c Normal file
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@ -0,0 +1,279 @@
// SPDX-License-Identifier: Zlib
#include "../zlib_deflate/defutil.h"
#include "dfltcc_util.h"
#include "dfltcc.h"
#include <asm/setup.h>
#include <linux/zutil.h>
/*
* Compress.
*/
int dfltcc_can_deflate(
z_streamp strm
)
{
deflate_state *state = (deflate_state *)strm->state;
struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state);
/* Check for kernel dfltcc command line parameter */
if (zlib_dfltcc_support == ZLIB_DFLTCC_DISABLED ||
zlib_dfltcc_support == ZLIB_DFLTCC_INFLATE_ONLY)
return 0;
/* Unsupported compression settings */
if (!dfltcc_are_params_ok(state->level, state->w_bits, state->strategy,
dfltcc_state->level_mask))
return 0;
/* Unsupported hardware */
if (!is_bit_set(dfltcc_state->af.fns, DFLTCC_GDHT) ||
!is_bit_set(dfltcc_state->af.fns, DFLTCC_CMPR) ||
!is_bit_set(dfltcc_state->af.fmts, DFLTCC_FMT0))
return 0;
return 1;
}
static void dfltcc_gdht(
z_streamp strm
)
{
deflate_state *state = (deflate_state *)strm->state;
struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param;
size_t avail_in = avail_in = strm->avail_in;
dfltcc(DFLTCC_GDHT,
param, NULL, NULL,
&strm->next_in, &avail_in, NULL);
}
static dfltcc_cc dfltcc_cmpr(
z_streamp strm
)
{
deflate_state *state = (deflate_state *)strm->state;
struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param;
size_t avail_in = strm->avail_in;
size_t avail_out = strm->avail_out;
dfltcc_cc cc;
cc = dfltcc(DFLTCC_CMPR | HBT_CIRCULAR,
param, &strm->next_out, &avail_out,
&strm->next_in, &avail_in, state->window);
strm->total_in += (strm->avail_in - avail_in);
strm->total_out += (strm->avail_out - avail_out);
strm->avail_in = avail_in;
strm->avail_out = avail_out;
return cc;
}
static void send_eobs(
z_streamp strm,
const struct dfltcc_param_v0 *param
)
{
deflate_state *state = (deflate_state *)strm->state;
zlib_tr_send_bits(
state,
bi_reverse(param->eobs >> (15 - param->eobl), param->eobl),
param->eobl);
flush_pending(strm);
if (state->pending != 0) {
/* The remaining data is located in pending_out[0:pending]. If someone
* calls put_byte() - this might happen in deflate() - the byte will be
* placed into pending_buf[pending], which is incorrect. Move the
* remaining data to the beginning of pending_buf so that put_byte() is
* usable again.
*/
memmove(state->pending_buf, state->pending_out, state->pending);
state->pending_out = state->pending_buf;
}
#ifdef ZLIB_DEBUG
state->compressed_len += param->eobl;
#endif
}
int dfltcc_deflate(
z_streamp strm,
int flush,
block_state *result
)
{
deflate_state *state = (deflate_state *)strm->state;
struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state);
struct dfltcc_param_v0 *param = &dfltcc_state->param;
uInt masked_avail_in;
dfltcc_cc cc;
int need_empty_block;
int soft_bcc;
int no_flush;
if (!dfltcc_can_deflate(strm))
return 0;
again:
masked_avail_in = 0;
soft_bcc = 0;
no_flush = flush == Z_NO_FLUSH;
/* Trailing empty block. Switch to software, except when Continuation Flag
* is set, which means that DFLTCC has buffered some output in the
* parameter block and needs to be called again in order to flush it.
*/
if (flush == Z_FINISH && strm->avail_in == 0 && !param->cf) {
if (param->bcf) {
/* A block is still open, and the hardware does not support closing
* blocks without adding data. Thus, close it manually.
*/
send_eobs(strm, param);
param->bcf = 0;
}
return 0;
}
if (strm->avail_in == 0 && !param->cf) {
*result = need_more;
return 1;
}
/* There is an open non-BFINAL block, we are not going to close it just
* yet, we have compressed more than DFLTCC_BLOCK_SIZE bytes and we see
* more than DFLTCC_DHT_MIN_SAMPLE_SIZE bytes. Open a new block with a new
* DHT in order to adapt to a possibly changed input data distribution.
*/
if (param->bcf && no_flush &&
strm->total_in > dfltcc_state->block_threshold &&
strm->avail_in >= dfltcc_state->dht_threshold) {
if (param->cf) {
/* We need to flush the DFLTCC buffer before writing the
* End-of-block Symbol. Mask the input data and proceed as usual.
*/
masked_avail_in += strm->avail_in;
strm->avail_in = 0;
no_flush = 0;
} else {
/* DFLTCC buffer is empty, so we can manually write the
* End-of-block Symbol right away.
*/
send_eobs(strm, param);
param->bcf = 0;
dfltcc_state->block_threshold =
strm->total_in + dfltcc_state->block_size;
if (strm->avail_out == 0) {
*result = need_more;
return 1;
}
}
}
/* The caller gave us too much data. Pass only one block worth of
* uncompressed data to DFLTCC and mask the rest, so that on the next
* iteration we start a new block.
*/
if (no_flush && strm->avail_in > dfltcc_state->block_size) {
masked_avail_in += (strm->avail_in - dfltcc_state->block_size);
strm->avail_in = dfltcc_state->block_size;
}
/* When we have an open non-BFINAL deflate block and caller indicates that
* the stream is ending, we need to close an open deflate block and open a
* BFINAL one.
*/
need_empty_block = flush == Z_FINISH && param->bcf && !param->bhf;
/* Translate stream to parameter block */
param->cvt = CVT_ADLER32;
if (!no_flush)
/* We need to close a block. Always do this in software - when there is
* no input data, the hardware will not nohor BCC. */
soft_bcc = 1;
if (flush == Z_FINISH && !param->bcf)
/* We are about to open a BFINAL block, set Block Header Final bit
* until the stream ends.
*/
param->bhf = 1;
/* DFLTCC-CMPR will write to next_out, so make sure that buffers with
* higher precedence are empty.
*/
Assert(state->pending == 0, "There must be no pending bytes");
Assert(state->bi_valid < 8, "There must be less than 8 pending bits");
param->sbb = (unsigned int)state->bi_valid;
if (param->sbb > 0)
*strm->next_out = (Byte)state->bi_buf;
if (param->hl)
param->nt = 0; /* Honor history */
param->cv = strm->adler;
/* When opening a block, choose a Huffman-Table Type */
if (!param->bcf) {
if (strm->total_in == 0 && dfltcc_state->block_threshold > 0) {
param->htt = HTT_FIXED;
}
else {
param->htt = HTT_DYNAMIC;
dfltcc_gdht(strm);
}
}
/* Deflate */
do {
cc = dfltcc_cmpr(strm);
if (strm->avail_in < 4096 && masked_avail_in > 0)
/* We are about to call DFLTCC with a small input buffer, which is
* inefficient. Since there is masked data, there will be at least
* one more DFLTCC call, so skip the current one and make the next
* one handle more data.
*/
break;
} while (cc == DFLTCC_CC_AGAIN);
/* Translate parameter block to stream */
strm->msg = oesc_msg(dfltcc_state->msg, param->oesc);
state->bi_valid = param->sbb;
if (state->bi_valid == 0)
state->bi_buf = 0; /* Avoid accessing next_out */
else
state->bi_buf = *strm->next_out & ((1 << state->bi_valid) - 1);
strm->adler = param->cv;
/* Unmask the input data */
strm->avail_in += masked_avail_in;
masked_avail_in = 0;
/* If we encounter an error, it means there is a bug in DFLTCC call */
Assert(cc != DFLTCC_CC_OP2_CORRUPT || param->oesc == 0, "BUG");
/* Update Block-Continuation Flag. It will be used to check whether to call
* GDHT the next time.
*/
if (cc == DFLTCC_CC_OK) {
if (soft_bcc) {
send_eobs(strm, param);
param->bcf = 0;
dfltcc_state->block_threshold =
strm->total_in + dfltcc_state->block_size;
} else
param->bcf = 1;
if (flush == Z_FINISH) {
if (need_empty_block)
/* Make the current deflate() call also close the stream */
return 0;
else {
bi_windup(state);
*result = finish_done;
}
} else {
if (flush == Z_FULL_FLUSH)
param->hl = 0; /* Clear history */
*result = flush == Z_NO_FLUSH ? need_more : block_done;
}
} else {
param->bcf = 1;
*result = need_more;
}
if (strm->avail_in != 0 && strm->avail_out != 0)
goto again; /* deflate() must use all input or all output */
return 1;
}

149
lib/zlib_dfltcc/dfltcc_inflate.c Normal file
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@ -0,0 +1,149 @@
// SPDX-License-Identifier: Zlib
#include "../zlib_inflate/inflate.h"
#include "dfltcc_util.h"
#include "dfltcc.h"
#include <asm/setup.h>
#include <linux/zutil.h>
/*
* Expand.
*/
int dfltcc_can_inflate(
z_streamp strm
)
{
struct inflate_state *state = (struct inflate_state *)strm->state;
struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state);
/* Check for kernel dfltcc command line parameter */
if (zlib_dfltcc_support == ZLIB_DFLTCC_DISABLED ||
zlib_dfltcc_support == ZLIB_DFLTCC_DEFLATE_ONLY)
return 0;
/* Unsupported compression settings */
if (state->wbits != HB_BITS)
return 0;
/* Unsupported hardware */
return is_bit_set(dfltcc_state->af.fns, DFLTCC_XPND) &&
is_bit_set(dfltcc_state->af.fmts, DFLTCC_FMT0);
}
static int dfltcc_was_inflate_used(
z_streamp strm
)
{
struct inflate_state *state = (struct inflate_state *)strm->state;
struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param;
return !param->nt;
}
static int dfltcc_inflate_disable(
z_streamp strm
)
{
struct inflate_state *state = (struct inflate_state *)strm->state;
struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state);
if (!dfltcc_can_inflate(strm))
return 0;
if (dfltcc_was_inflate_used(strm))
/* DFLTCC has already decompressed some data. Since there is not
* enough information to resume decompression in software, the call
* must fail.
*/
return 1;
/* DFLTCC was not used yet - decompress in software */
memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af));
return 0;
}
static dfltcc_cc dfltcc_xpnd(
z_streamp strm
)
{
struct inflate_state *state = (struct inflate_state *)strm->state;
struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param;
size_t avail_in = strm->avail_in;
size_t avail_out = strm->avail_out;
dfltcc_cc cc;
cc = dfltcc(DFLTCC_XPND | HBT_CIRCULAR,
param, &strm->next_out, &avail_out,
&strm->next_in, &avail_in, state->window);
strm->avail_in = avail_in;
strm->avail_out = avail_out;
return cc;
}
dfltcc_inflate_action dfltcc_inflate(
z_streamp strm,
int flush,
int *ret
)
{
struct inflate_state *state = (struct inflate_state *)strm->state;
struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state);
struct dfltcc_param_v0 *param = &dfltcc_state->param;
dfltcc_cc cc;
if (flush == Z_BLOCK) {
/* DFLTCC does not support stopping on block boundaries */
if (dfltcc_inflate_disable(strm)) {
*ret = Z_STREAM_ERROR;
return DFLTCC_INFLATE_BREAK;
} else
return DFLTCC_INFLATE_SOFTWARE;
}
if (state->last) {
if (state->bits != 0) {
strm->next_in++;
strm->avail_in--;
state->bits = 0;
}
state->mode = CHECK;
return DFLTCC_INFLATE_CONTINUE;
}
if (strm->avail_in == 0 && !param->cf)
return DFLTCC_INFLATE_BREAK;
if (!state->window || state->wsize == 0) {
state->mode = MEM;
return DFLTCC_INFLATE_CONTINUE;
}
/* Translate stream to parameter block */
param->cvt = CVT_ADLER32;
param->sbb = state->bits;
param->hl = state->whave; /* Software and hardware history formats match */
param->ho = (state->write - state->whave) & ((1 << HB_BITS) - 1);
if (param->hl)
param->nt = 0; /* Honor history for the first block */
param->cv = state->flags ? REVERSE(state->check) : state->check;
/* Inflate */
do {
cc = dfltcc_xpnd(strm);
} while (cc == DFLTCC_CC_AGAIN);
/* Translate parameter block to stream */
strm->msg = oesc_msg(dfltcc_state->msg, param->oesc);
state->last = cc == DFLTCC_CC_OK;
state->bits = param->sbb;
state->whave = param->hl;
state->write = (param->ho + param->hl) & ((1 << HB_BITS) - 1);
state->check = state->flags ? REVERSE(param->cv) : param->cv;
if (cc == DFLTCC_CC_OP2_CORRUPT && param->oesc != 0) {
/* Report an error if stream is corrupted */
state->mode = BAD;
return DFLTCC_INFLATE_CONTINUE;
}
state->mode = TYPEDO;
/* Break if operands are exhausted, otherwise continue looping */
return (cc == DFLTCC_CC_OP1_TOO_SHORT || cc == DFLTCC_CC_OP2_TOO_SHORT) ?
DFLTCC_INFLATE_BREAK : DFLTCC_INFLATE_CONTINUE;
}

17
lib/zlib_dfltcc/dfltcc_syms.c Normal file
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@ -0,0 +1,17 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/lib/zlib_dfltcc/dfltcc_syms.c
*
* Exported symbols for the s390 zlib dfltcc support.
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/zlib.h>
#include "dfltcc.h"
EXPORT_SYMBOL(dfltcc_can_deflate);
EXPORT_SYMBOL(dfltcc_deflate);
EXPORT_SYMBOL(dfltcc_reset);
MODULE_LICENSE("GPL");

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