Граф коммитов

103 Коммитов

Автор SHA1 Сообщение Дата
Mike Rapoport 7e1c4e2792 memblock: stop using implicit alignment to SMP_CACHE_BYTES
When a memblock allocation APIs are called with align = 0, the alignment
is implicitly set to SMP_CACHE_BYTES.

Implicit alignment is done deep in the memblock allocator and it can
come as a surprise.  Not that such an alignment would be wrong even
when used incorrectly but it is better to be explicit for the sake of
clarity and the prinicple of the least surprise.

Replace all such uses of memblock APIs with the 'align' parameter
explicitly set to SMP_CACHE_BYTES and stop implicit alignment assignment
in the memblock internal allocation functions.

For the case when memblock APIs are used via helper functions, e.g.  like
iommu_arena_new_node() in Alpha, the helper functions were detected with
Coccinelle's help and then manually examined and updated where
appropriate.

The direct memblock APIs users were updated using the semantic patch below:

@@
expression size, min_addr, max_addr, nid;
@@
(
|
- memblock_alloc_try_nid_raw(size, 0, min_addr, max_addr, nid)
+ memblock_alloc_try_nid_raw(size, SMP_CACHE_BYTES, min_addr, max_addr,
nid)
|
- memblock_alloc_try_nid_nopanic(size, 0, min_addr, max_addr, nid)
+ memblock_alloc_try_nid_nopanic(size, SMP_CACHE_BYTES, min_addr, max_addr,
nid)
|
- memblock_alloc_try_nid(size, 0, min_addr, max_addr, nid)
+ memblock_alloc_try_nid(size, SMP_CACHE_BYTES, min_addr, max_addr, nid)
|
- memblock_alloc(size, 0)
+ memblock_alloc(size, SMP_CACHE_BYTES)
|
- memblock_alloc_raw(size, 0)
+ memblock_alloc_raw(size, SMP_CACHE_BYTES)
|
- memblock_alloc_from(size, 0, min_addr)
+ memblock_alloc_from(size, SMP_CACHE_BYTES, min_addr)
|
- memblock_alloc_nopanic(size, 0)
+ memblock_alloc_nopanic(size, SMP_CACHE_BYTES)
|
- memblock_alloc_low(size, 0)
+ memblock_alloc_low(size, SMP_CACHE_BYTES)
|
- memblock_alloc_low_nopanic(size, 0)
+ memblock_alloc_low_nopanic(size, SMP_CACHE_BYTES)
|
- memblock_alloc_from_nopanic(size, 0, min_addr)
+ memblock_alloc_from_nopanic(size, SMP_CACHE_BYTES, min_addr)
|
- memblock_alloc_node(size, 0, nid)
+ memblock_alloc_node(size, SMP_CACHE_BYTES, nid)
)

[mhocko@suse.com: changelog update]
[akpm@linux-foundation.org: coding-style fixes]
[rppt@linux.ibm.com: fix missed uses of implicit alignment]
  Link: http://lkml.kernel.org/r/20181016133656.GA10925@rapoport-lnx
Link: http://lkml.kernel.org/r/1538687224-17535-1-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Suggested-by: Michal Hocko <mhocko@suse.com>
Acked-by: Paul Burton <paul.burton@mips.com>	[MIPS]
Acked-by: Michael Ellerman <mpe@ellerman.id.au>	[powerpc]
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-31 08:54:16 -07:00
Mike Rapoport 57c8a661d9 mm: remove include/linux/bootmem.h
Move remaining definitions and declarations from include/linux/bootmem.h
into include/linux/memblock.h and remove the redundant header.

The includes were replaced with the semantic patch below and then
semi-automated removal of duplicated '#include <linux/memblock.h>

@@
@@
- #include <linux/bootmem.h>
+ #include <linux/memblock.h>

[sfr@canb.auug.org.au: dma-direct: fix up for the removal of linux/bootmem.h]
  Link: http://lkml.kernel.org/r/20181002185342.133d1680@canb.auug.org.au
[sfr@canb.auug.org.au: powerpc: fix up for removal of linux/bootmem.h]
  Link: http://lkml.kernel.org/r/20181005161406.73ef8727@canb.auug.org.au
[sfr@canb.auug.org.au: x86/kaslr, ACPI/NUMA: fix for linux/bootmem.h removal]
  Link: http://lkml.kernel.org/r/20181008190341.5e396491@canb.auug.org.au
Link: http://lkml.kernel.org/r/1536927045-23536-30-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Serge Semin <fancer.lancer@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-31 08:54:16 -07:00
Mike Rapoport 2a5bda5a62 memblock: replace alloc_bootmem with memblock_alloc
The alloc_bootmem(size) is a shortcut for allocation of SMP_CACHE_BYTES
aligned memory. When the align parameter of memblock_alloc() is 0, the
alignment is implicitly set to SMP_CACHE_BYTES and thus alloc_bootmem(size)
and memblock_alloc(size, 0) are equivalent.

The conversion is done using the following semantic patch:

@@
expression size;
@@
- alloc_bootmem(size)
+ memblock_alloc(size, 0)

Link: http://lkml.kernel.org/r/1536927045-23536-22-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Serge Semin <fancer.lancer@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-31 08:54:16 -07:00
Max Filippov ef439d49e0 xtensa: ISS: don't allocate memory in platform_setup
Memory allocator is not initialized at that point yet, use static array
instead.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-09-06 11:29:31 -07:00
Max Filippov fc862ee997 xtensa: drop unneeded platform/hardware.h headers
platform/hardware.h no longer supply any information for processor.h,
vectors.h, setup.c or vmlinux.lds.S, don't include it.
This header is now empty in the platforms/iss, so remove it altogether.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-08-20 12:28:04 -07:00
Max Filippov aea731c81f xtensa: rework {CONFIG,PLATFORM}_DEFAULT_MEM_START
Drop PLATFORM_DEFAULT_MEM_START from the platform/hardware.h headers.
Provide definition of CONFIG_DEFAULT_MEM_START always, allow changing it
only in noMMU configurations when PLATFORM_WANT_DEFAULT_MEM is selected.
Change prompt and description so that it's clear that it controls
PAGE_OFFSET and PHYS_OFFSET.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-08-20 12:28:03 -07:00
Max Filippov f79e4d5f92 xtensa: drop unused {CONFIG,PLATFORM}_DEFAULT_MEM_SIZE
Now that noMMU cache attributes are set up separately drop no longer
used macro PLATFORM_DEFAULT_MEM_SIZE and config symbol
CONFIG_DEFAULT_MEM_SIZE used for setting it.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-08-20 12:27:52 -07:00
Christoph Hellwig 8a8dcabffb tty: replace ->proc_fops with ->proc_show
Just set up the show callback in the tty_operations, and use
proc_create_single_data to create the file without additional
boilerplace code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16 07:24:30 +02:00
Bart Van Assche 233bde21aa block: Move SECTOR_SIZE and SECTOR_SHIFT definitions into <linux/blkdev.h>
It happens often while I'm preparing a patch for a block driver that
I'm wondering: is a definition of SECTOR_SIZE and/or SECTOR_SHIFT
available for this driver? Do I have to introduce definitions of these
constants before I can use these constants? To avoid this confusion,
move the existing definitions of SECTOR_SIZE and SECTOR_SHIFT into the
<linux/blkdev.h> header file such that these become available for all
block drivers. Make the SECTOR_SIZE definition in the uapi msdos_fs.h
header file conditional to avoid that including that header file after
<linux/blkdev.h> causes the compiler to complain about a SECTOR_SIZE
redefinition.

Note: the SECTOR_SIZE / SECTOR_SHIFT / SECTOR_BITS definitions have
not been removed from uapi header files nor from NAND drivers in
which these constants are used for another purpose than converting
block layer offsets and sizes into a number of sectors.

Cc: David S. Miller <davem@davemloft.net>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-03-17 14:45:23 -06:00
Linus Torvalds d0bd31dc5c Xtensa improvements for v4.16:
- add SSP support;
 - add KASAN support;
 - improvements to xtensa-specific assembly:
   - use ENTRY and ENDPROC consistently;
   - clean up and unify word alignment macros;
   - clean up and unify fixup marking;
   - use 'call' instead of 'callx' where possible;
 - various cleanups:
   - consiolidate kernel stack size related definitions;
   - replace #ifdef'fed/commented out debug printk statements with pr_debug;
   - use struct exc_table instead of flat array for exception handling data;
 - build kernel with -mtext-section-literals; simplify xtensa linker script;
 - fix futex_atomic_cmpxchg_inatomic.
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Merge tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

 - add SSP support

 - add KASAN support

 - improvements to xtensa-specific assembly:
    - use ENTRY and ENDPROC consistently
    - clean up and unify word alignment macros
    - clean up and unify fixup marking
    - use 'call' instead of 'callx' where possible

 - various cleanups:
    - consiolidate kernel stack size related definitions
    - replace #ifdef'fed/commented out debug printk statements with
      pr_debug
    - use struct exc_table instead of flat array for exception handling
      data

 - build kernel with -mtext-section-literals; simplify xtensa linker
   script

 - fix futex_atomic_cmpxchg_inatomic()

* tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa: (21 commits)
  xtensa: fix futex_atomic_cmpxchg_inatomic
  xtensa: shut up gcc-8 warnings
  xtensa: print kernel sections info in mem_init
  xtensa: use generic strncpy_from_user with KASAN
  xtensa: use __memset in __xtensa_clear_user
  xtensa: add support for KASAN
  xtensa: move fixmap and kmap just above the KSEG
  xtensa: don't clear swapper_pg_dir in paging_init
  xtensa: extract init_kio
  xtensa: implement early_trap_init
  xtensa: clean up exception handling structure
  xtensa: clean up custom-controlled debug output
  xtensa: enable stack protector
  xtensa: print hardware config ID on startup
  xtensa: consolidate kernel stack size related definitions
  xtensa: clean up functions in assembly code
  xtensa: clean up word alignment macros in assembly code
  xtensa: clean up fixups in assembly code
  xtensa: use call instead of callx in assembly code
  xtensa: build kernel with text-section-literals
  ...
2018-01-29 16:40:28 -08:00
Max Filippov c130d3be84 xtensa: clean up custom-controlled debug output
Replace #ifdef'fed/commented out debug printk statements with pr_debug.
Replace printk statements with pr_* equivalents.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-12-16 22:37:08 -08:00
Linus Torvalds e2c5923c34 Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block
Pull core block layer updates from Jens Axboe:
 "This is the main pull request for block storage for 4.15-rc1.

  Nothing out of the ordinary in here, and no API changes or anything
  like that. Just various new features for drivers, core changes, etc.
  In particular, this pull request contains:

   - A patch series from Bart, closing the whole on blk/scsi-mq queue
     quescing.

   - A series from Christoph, building towards hidden gendisks (for
     multipath) and ability to move bio chains around.

   - NVMe
        - Support for native multipath for NVMe (Christoph).
        - Userspace notifications for AENs (Keith).
        - Command side-effects support (Keith).
        - SGL support (Chaitanya Kulkarni)
        - FC fixes and improvements (James Smart)
        - Lots of fixes and tweaks (Various)

   - bcache
        - New maintainer (Michael Lyle)
        - Writeback control improvements (Michael)
        - Various fixes (Coly, Elena, Eric, Liang, et al)

   - lightnvm updates, mostly centered around the pblk interface
     (Javier, Hans, and Rakesh).

   - Removal of unused bio/bvec kmap atomic interfaces (me, Christoph)

   - Writeback series that fix the much discussed hundreds of millions
     of sync-all units. This goes all the way, as discussed previously
     (me).

   - Fix for missing wakeup on writeback timer adjustments (Yafang
     Shao).

   - Fix laptop mode on blk-mq (me).

   - {mq,name} tupple lookup for IO schedulers, allowing us to have
     alias names. This means you can use 'deadline' on both !mq and on
     mq (where it's called mq-deadline). (me).

   - blktrace race fix, oopsing on sg load (me).

   - blk-mq optimizations (me).

   - Obscure waitqueue race fix for kyber (Omar).

   - NBD fixes (Josef).

   - Disable writeback throttling by default on bfq, like we do on cfq
     (Luca Miccio).

   - Series from Ming that enable us to treat flush requests on blk-mq
     like any other request. This is a really nice cleanup.

   - Series from Ming that improves merging on blk-mq with schedulers,
     getting us closer to flipping the switch on scsi-mq again.

   - BFQ updates (Paolo).

   - blk-mq atomic flags memory ordering fixes (Peter Z).

   - Loop cgroup support (Shaohua).

   - Lots of minor fixes from lots of different folks, both for core and
     driver code"

* 'for-4.15/block' of git://git.kernel.dk/linux-block: (294 commits)
  nvme: fix visibility of "uuid" ns attribute
  blk-mq: fixup some comment typos and lengths
  ide: ide-atapi: fix compile error with defining macro DEBUG
  blk-mq: improve tag waiting setup for non-shared tags
  brd: remove unused brd_mutex
  blk-mq: only run the hardware queue if IO is pending
  block: avoid null pointer dereference on null disk
  fs: guard_bio_eod() needs to consider partitions
  xtensa/simdisk: fix compile error
  nvme: expose subsys attribute to sysfs
  nvme: create 'slaves' and 'holders' entries for hidden controllers
  block: create 'slaves' and 'holders' entries for hidden gendisks
  nvme: also expose the namespace identification sysfs files for mpath nodes
  nvme: implement multipath access to nvme subsystems
  nvme: track shared namespaces
  nvme: introduce a nvme_ns_ids structure
  nvme: track subsystems
  block, nvme: Introduce blk_mq_req_flags_t
  block, scsi: Make SCSI quiesce and resume work reliably
  block: Add the QUEUE_FLAG_PREEMPT_ONLY request queue flag
  ...
2017-11-14 15:32:19 -08:00
Christoph Hellwig 0e78eccc55 xtensa/simdisk: fix compile error
Fixes: d004a5e7d4 ("block: remove __bio_kmap_atomic")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-10 19:55:57 -07:00
Christoph Hellwig d004a5e7d4 block: remove __bio_kmap_atomic
This helper doesn't buy us much over calling kmap_atomic directly.
In fact in the only caller it does a bit of useless work as the
caller already has the bvec at hand, and said caller would even
buggy for a multi-segment bio due to the use of this helper.

So just remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-10 19:53:25 -07:00
Kees Cook d8479a21a9 xtensa: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-xtensa@linux-xtensa.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-02 15:50:33 -07:00
Linus Torvalds 63f700aab4 Xtensa fixes for v4.12-rc6
- don't use linux IRQ #0 in legacy irq domains: fixes timer interrupt
   assignment when it's hardware IRQ # is 0 and the kernel is built w/o
   device tree support;
 - reduce reservation size for double exception vector literals from 48
   to 20 bytes: fixes build on cores with small user exception vector;
 - cleanups: use kmalloc_array instead of kmalloc in simdisk_init and
   seq_puts instead of seq_printf in c_show.
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Merge tag 'xtensa-20170612' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa fixes from Max Filippov:

 - don't use linux IRQ #0 in legacy irq domains: fixes timer interrupt
   assignment when it's hardware IRQ # is 0 and the kernel is built w/o
   device tree support

 - reduce reservation size for double exception vector literals from 48
   to 20 bytes: fixes build on cores with small user exception vector

 - cleanups: use kmalloc_array instead of kmalloc in simdisk_init and
   seq_puts instead of seq_printf in c_show.

* tag 'xtensa-20170612' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: don't use linux IRQ #0
  xtensa: reduce double exception literal reservation
  xtensa: ISS: Use kmalloc_array() in simdisk_init()
  xtensa: Use seq_puts() in c_show()
2017-06-13 15:09:10 +09:00
Markus Elfring 5e78e465ab xtensa: ISS: Use kmalloc_array() in simdisk_init()
* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "kmalloc_array".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data type by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-05-08 14:53:29 -07:00
Max Filippov fbe22d2800 xtensa: ISS: update kernel command line in platform_setup
Move platform_setup call higher in initialization sequence so that it
could change kernel command line.
Check command line passed to simulator in ISS platform_stup and update
kernel command line if there's anything.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-03-13 13:47:20 -07:00
Max Filippov e8cd8da934 xtensa: ISS: add argc/argv simcall definitions
There are three simcalls implemented by ISS and QEMU related to
argc/argv processing: SYS_iss_argc (get number of command line
arguments), SYS_iss_argv_size (get size of command line argument block)
and SYS_iss_set_argv (copy command line arguments to virtual guest
address).
Add definitions for these calls to iss/include/platform/simcall.h

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-03-13 13:47:12 -07:00
Max Filippov 3ced97305d xtensa: ISS: cleanup setup.c
Drop commented out code, unused extern definition, extra blank lines.
Rewrite iss_panic_block initialization in C99 style.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-03-13 13:47:11 -07:00
Linus Torvalds 7c0f6ba682 Replace <asm/uaccess.h> with <linux/uaccess.h> globally
This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
  sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-24 11:46:01 -08:00
Max Filippov 549409b4b5 xtensa: ISS: allow simdisk to use high memory buffers
ISS kernel by default has only low memory. But it may be configured to
support high memory and started in a simulator with more than 128M of
RAM. Simdisk driver in such configuration can get IO request with a
high memory page. There may be no TLB entry for that page, only page
table entry. However simulators don't do pagewalking, so such IO request
will fail. Touch IO buffer in the buffer read/write loop so that a TLB
entry is likely there when read or write simcall is invoked.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2016-09-20 20:43:22 -07:00
Max Filippov feec273a2b xtensa: ISS: define simc_exit and use it instead of inline asm
A number of ISS platform functions use inline assembly to invoke
simulator exit, not all correctly. Define simc_exit(exit_code) and use
it instead of inline assembly.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2016-09-20 18:53:00 -07:00
Max Filippov 4f2056873f xtensa: extract common CPU reset code into separate function
platform_restart implementatations do the same thing to reset CPU.
Don't duplicate that code, move it to a function and call it from
platform_restart.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2016-09-11 23:53:22 -07:00
Florian Westphal 860e9538a9 treewide: replace dev->trans_start update with helper
Replace all trans_start updates with netif_trans_update helper.
change was done via spatch:

struct net_device *d;
@@
- d->trans_start = jiffies
+ netif_trans_update(d)

Compile tested only.

Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: linux-xtensa@linux-xtensa.org
Cc: linux1394-devel@lists.sourceforge.net
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: MPT-FusionLinux.pdl@broadcom.com
Cc: linux-scsi@vger.kernel.org
Cc: linux-can@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-hams@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-wireless@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Cc: b.a.t.m.a.n@lists.open-mesh.org
Cc: linux-bluetooth@vger.kernel.org
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-04 14:16:49 -04:00
Linus Torvalds fffad3e1b3 Xtensa improvements for 4.6:
- control whether perf IRQ is treated as NMI from Kconfig;
 - implement ioremap for regions outside KIO segment;
 - fix ISS serial port behaviour when EOF is reached;
 - fix preemption in {clear,copy}_user_highpage;
 - fix endianness issues for XTFPGA devices, big-endian cores are now
   fully functional;
 - clean up debug infrastructure and add support for hardware breakpoints
   and watchpoints.
 - add processor configurations for Three Core HiFi-2 MX and HiFi3 cpus
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Merge tag 'xtensa-next-20160320' of git://github.com/czankel/xtensa-linux

Pull Xtensa updates from Chris Zankel:
 "Xtensa improvements for 4.6:

   - control whether perf IRQ is treated as NMI from Kconfig
   - implement ioremap for regions outside KIO segment
   - fix ISS serial port behaviour when EOF is reached
   - fix preemption in {clear,copy}_user_highpage
   - fix endianness issues for XTFPGA devices, big-endian cores are now
     fully functional
   - clean up debug infrastructure and add support for hardware
     breakpoints and watchpoints
   - add processor configurations for Three Core HiFi-2 MX and HiFi3
     cpus"

* tag 'xtensa-next-20160320' of git://github.com/czankel/xtensa-linux:
  xtensa: add test_kc705_hifi variant
  xtensa: add Three Core HiFi-2 MX Variant.
  xtensa: support hardware breakpoints/watchpoints
  xtensa: use context structure for debug exceptions
  xtensa: remove remaining non-functional KGDB bits
  xtensa: clear all DBREAKC registers on start
  xtensa: xtfpga: fix earlycon endianness
  xtensa: xtfpga: fix i2c controller register width and endianness
  xtensa: xtfpga: fix ethernet controller endianness
  xtensa: xtfpga: fix serial port register width and endianness
  xtensa: define CONFIG_CPU_{BIG,LITTLE}_ENDIAN
  xtensa: fix preemption in {clear,copy}_user_highpage
  xtensa: ISS: don't hang if stdin EOF is reached
  xtensa: support ioremap for memory outside KIO region
  xtensa: use XTENSA_INT_LEVEL macro in asm/timex.h
  xtensa: make fake NMI configurable
2016-03-20 12:22:07 -07:00
Max Filippov 362014c8d9 xtensa: ISS: don't hang if stdin EOF is reached
Simulator stdin may be connected to a file, when its end is reached
kernel hangs in infinite loop inside rs_poll, because simc_poll always
signals that descriptor 0 is readable and simc_read always returns 0.
Check simc_read return value and exit loop if it's not positive. Also
don't rewind polling timer if it's zero.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2016-03-11 08:53:31 +00:00
Jiri Slaby e57c25367e TTY: xtensa/iss/console, remove unused _INLINE_ definition
This is a remnant from the dark age. Nobody uses the macro now, so
remove.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: <linux-xtensa@linux-xtensa.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-06 22:16:21 -08:00
Al Viro 16e5c1fc36 convert a bunch of open-coded instances of memdup_user_nul()
A _lot_ of ->write() instances were open-coding it; some are
converted to memdup_user_nul(), a lot more remain...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-01-04 10:26:58 -05:00
Linus Torvalds 3419b45039 Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block
Pull block IO poll support from Jens Axboe:
 "Various groups have been doing experimentation around IO polling for
  (really) fast devices.  The code has been reviewed and has been
  sitting on the side for a few releases, but this is now good enough
  for coordinated benchmarking and further experimentation.

  Currently O_DIRECT sync read/write are supported.  A framework is in
  the works that allows scalable stats tracking so we can auto-tune
  this.  And we'll add libaio support as well soon.  Fow now, it's an
  opt-in feature for test purposes"

* 'for-4.4/io-poll' of git://git.kernel.dk/linux-block:
  direct-io: be sure to assign dio->bio_bdev for both paths
  directio: add block polling support
  NVMe: add blk polling support
  block: add block polling support
  blk-mq: return tag/queue combo in the make_request_fn handlers
  block: change ->make_request_fn() and users to return a queue cookie
2015-11-10 17:23:49 -08:00
Jens Axboe dece16353e block: change ->make_request_fn() and users to return a queue cookie
No functional changes in this patch, but it prepares us for returning
a more useful cookie related to the IO that was queued up.

Signed-off-by: Jens Axboe <axboe@fb.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
2015-11-07 10:40:46 -07:00
Max Filippov 5029615e25 xtensa: fixes for configs without loop option
Build-time fixes:
- make lbeg/lend/lcount save/restore conditional on kernel entry;
- don't clear lcount in platform_restart functions unconditionally.

Run-time fixes:
- use correct end of range register in __endla paired with __loopt, not
  the unused temporary register. This fixes .bss zero-initialization.
  Update comments in asmmacro.h;
- don't clobber a10 in the usercopy that leads to access to unmapped
  memory.

Cc: <stable@vger.kernel.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-11-02 18:02:47 +03:00
Linus Torvalds 1081230b74 Merge branch 'for-4.3/core' of git://git.kernel.dk/linux-block
Pull core block updates from Jens Axboe:
 "This first core part of the block IO changes contains:

   - Cleanup of the bio IO error signaling from Christoph.  We used to
     rely on the uptodate bit and passing around of an error, now we
     store the error in the bio itself.

   - Improvement of the above from myself, by shrinking the bio size
     down again to fit in two cachelines on x86-64.

   - Revert of the max_hw_sectors cap removal from a revision again,
     from Jeff Moyer.  This caused performance regressions in various
     tests.  Reinstate the limit, bump it to a more reasonable size
     instead.

   - Make /sys/block/<dev>/queue/discard_max_bytes writeable, by me.
     Most devices have huge trim limits, which can cause nasty latencies
     when deleting files.  Enable the admin to configure the size down.
     We will look into having a more sane default instead of UINT_MAX
     sectors.

   - Improvement of the SGP gaps logic from Keith Busch.

   - Enable the block core to handle arbitrarily sized bios, which
     enables a nice simplification of bio_add_page() (which is an IO hot
     path).  From Kent.

   - Improvements to the partition io stats accounting, making it
     faster.  From Ming Lei.

   - Also from Ming Lei, a basic fixup for overflow of the sysfs pending
     file in blk-mq, as well as a fix for a blk-mq timeout race
     condition.

   - Ming Lin has been carrying Kents above mentioned patches forward
     for a while, and testing them.  Ming also did a few fixes around
     that.

   - Sasha Levin found and fixed a use-after-free problem introduced by
     the bio->bi_error changes from Christoph.

   - Small blk cgroup cleanup from Viresh Kumar"

* 'for-4.3/core' of git://git.kernel.dk/linux-block: (26 commits)
  blk: Fix bio_io_vec index when checking bvec gaps
  block: Replace SG_GAPS with new queue limits mask
  block: bump BLK_DEF_MAX_SECTORS to 2560
  Revert "block: remove artifical max_hw_sectors cap"
  blk-mq: fix race between timeout and freeing request
  blk-mq: fix buffer overflow when reading sysfs file of 'pending'
  Documentation: update notes in biovecs about arbitrarily sized bios
  block: remove bio_get_nr_vecs()
  fs: use helper bio_add_page() instead of open coding on bi_io_vec
  block: kill merge_bvec_fn() completely
  md/raid5: get rid of bio_fits_rdev()
  md/raid5: split bio for chunk_aligned_read
  block: remove split code in blkdev_issue_{discard,write_same}
  btrfs: remove bio splitting and merge_bvec_fn() calls
  bcache: remove driver private bio splitting code
  block: simplify bio_add_page()
  block: make generic_make_request handle arbitrarily sized bios
  blk-cgroup: Drop unlikely before IS_ERR(_OR_NULL)
  block: don't access bio->bi_error after bio_put()
  block: shrink struct bio down to 2 cache lines again
  ...
2015-09-02 13:10:25 -07:00
Christoph Hellwig 4246a0b63b block: add a bi_error field to struct bio
Currently we have two different ways to signal an I/O error on a BIO:

 (1) by clearing the BIO_UPTODATE flag
 (2) by returning a Linux errno value to the bi_end_io callback

The first one has the drawback of only communicating a single possible
error (-EIO), and the second one has the drawback of not beeing persistent
when bios are queued up, and are not passed along from child to parent
bio in the ever more popular chaining scenario.  Having both mechanisms
available has the additional drawback of utterly confusing driver authors
and introducing bugs where various I/O submitters only deal with one of
them, and the others have to add boilerplate code to deal with both kinds
of error returns.

So add a new bi_error field to store an errno value directly in struct
bio and remove the existing mechanisms to clean all this up.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-07-29 08:55:15 -06:00
Max Filippov 72ce6787e3 xtensa: ISS: add missing va_end into split_if_spec
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-07-13 15:42:00 +03:00
Paul Gortmaker 30e3c6428f xtensa: don't use module_init for non-modular core network.c code
The network.c code is piggybacking off of the arch independent
CONFIG_NET, which is bool.  So the code is either built in or
absent.  It will never be modular, so using module_init as an
alias for __initcall is rather misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future.  If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Direct use of __initcall is discouraged, vs prioritized ones.
Use of device_initcall is consistent with what __initcall
maps onto, and hence does not change the init order, making the
impact of this change zero.   Should someone with real hardware
for boot testing want to change it later to arch_initcall or
something different, they can do that at a later date.

Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: linux-xtensa@linux-xtensa.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-06-16 14:12:31 -04:00
Max Filippov 24e94454c8 xtensa: ISS: fix locking in TAP network adapter
- don't lock lp->lock in the iss_net_timer for the call of iss_net_poll,
  it will lock it itself;
- invert order of lp->lock and opened_lock acquisition in the
  iss_net_open to make it consistent with iss_net_poll;
- replace spin_lock with spin_lock_bh when acquiring locks used in
  iss_net_timer from non-atomic context;
- replace spin_lock_irqsave with spin_lock_bh in the iss_net_start_xmit
  as the driver doesn't use lp->lock in the hard IRQ context;
- replace __SPIN_LOCK_UNLOCKED(lp.lock) with spin_lock_init, otherwise
  lockdep is unhappy about using non-static key.

Cc: <stable@vger.kernel.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2015-04-13 09:01:00 +03:00
Max Filippov 55b441be5c xtensa: ISS: don't depend on CONFIG_TTY
Build console support only when CONFIG_TTY is selected.
This restores ISS as the default platform for allnoconfig builds.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-05-05 09:04:10 -07:00
Linus Torvalds f568849eda Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
Pull core block IO changes from Jens Axboe:
 "The major piece in here is the immutable bio_ve series from Kent, the
  rest is fairly minor.  It was supposed to go in last round, but
  various issues pushed it to this release instead.  The pull request
  contains:

   - Various smaller blk-mq fixes from different folks.  Nothing major
     here, just minor fixes and cleanups.

   - Fix for a memory leak in the error path in the block ioctl code
     from Christian Engelmayer.

   - Header export fix from CaiZhiyong.

   - Finally the immutable biovec changes from Kent Overstreet.  This
     enables some nice future work on making arbitrarily sized bios
     possible, and splitting more efficient.  Related fixes to immutable
     bio_vecs:

        - dm-cache immutable fixup from Mike Snitzer.
        - btrfs immutable fixup from Muthu Kumar.

  - bio-integrity fix from Nic Bellinger, which is also going to stable"

* 'for-3.14/core' of git://git.kernel.dk/linux-block: (44 commits)
  xtensa: fixup simdisk driver to work with immutable bio_vecs
  block/blk-mq-cpu.c: use hotcpu_notifier()
  blk-mq: for_each_* macro correctness
  block: Fix memory leak in rw_copy_check_uvector() handling
  bio-integrity: Fix bio_integrity_verify segment start bug
  block: remove unrelated header files and export symbol
  blk-mq: uses page->list incorrectly
  blk-mq: use __smp_call_function_single directly
  btrfs: fix missing increment of bi_remaining
  Revert "block: Warn and free bio if bi_end_io is not set"
  block: Warn and free bio if bi_end_io is not set
  blk-mq: fix initializing request's start time
  block: blk-mq: don't export blk_mq_free_queue()
  block: blk-mq: make blk_sync_queue support mq
  block: blk-mq: support draining mq queue
  dm cache: increment bi_remaining when bi_end_io is restored
  block: fixup for generic bio chaining
  block: Really silence spurious compiler warnings
  block: Silence spurious compiler warnings
  block: Kill bio_pair_split()
  ...
2014-01-30 11:19:05 -08:00
Jens Axboe 675675ada4 xtensa: fixup simdisk driver to work with immutable bio_vecs
Geert reported:

arch/xtensa/platforms/iss/simdisk.c:108:23: error: 'struct bio' has no member named 'bi_sector'
arch/xtensa/platforms/iss/simdisk.c:110:2: error: incompatible types when assigning to type 'int' from type 'struct bvec_iter'
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:110:2: error: request for member 'bv_len' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_size' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_idx' in something not a structure or union
arch/xtensa/platforms/iss/simdisk.c:111:18: error: request for member 'bi_bvec_done' in something not a structure or union
make[2]: *** [arch/xtensa/platforms/iss/simdisk.o] Error 1

Fixup the usage of bio_for_each_segment(). Also fix wrong use
of __bio_kunmap_atomic() - it needs the mapped buffer passed in,
not the originally mapped page.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2014-01-29 08:37:32 -07:00
Max Filippov 306ab5448f xtensa: ISS: raise network polling rate to 10 times/sec
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-01-14 23:57:03 +04:00
Max Filippov 8be54d770b xtensa: ISS: avoid simple_strtoul usage
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:20:00 -08:00
Max Filippov a6e16b9aaf xtensa: ISS: clean up diagnostic, increase verbosity
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:51 -08:00
Max Filippov 35e14b443a xtensa: ISS: always use fixed tuntap config
The code doesn't handle dynamic TAP interface allocation, so there's no
point tracking this case.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:51 -08:00
Max Filippov f6ac5a177d xtensa: ISS: enable iss_net_set_mac
This allows changing MAC address of the device.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:50 -08:00
Max Filippov 8991fd8835 xtensa: ISS: drop IP setup, clean up MAC setup
Without proper MAC setup network device doesn't work. IP setup is
redundant and may be done with 'ip=...' kernel parameter.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:50 -08:00
Max Filippov 358b181003 xtensa: ISS: init network interface name before the probe
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:49 -08:00
Max Filippov 8c8ad85f1f xtensa: ISS: fix command line parameter name
Now 'ethX=...' syntax can actually be used in kernel command line to
specify network interfaces.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:49 -08:00
Max Filippov 3f3cd60bbd xtensa: ISS: clean up iss-network driver
No functional changes, remove dead/unused code, clean checkpatch warnings,
replace strlen of constant strings with sizeof.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:48 -08:00
Thomas Meyer f447fd30af xtensa: Cocci spatch "noderef"
sizeof when applied to a pointer typed expression gives the size of the
pointer.
Found by coccinelle spatch "misc/noderef.cocci"

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Chris Zankel <chris@zankel.net>
2013-10-16 11:48:31 -07:00