Dave Hansen reported the following;
My laptop has been behaving strangely with 4.2-rc2. Once I log
in to my X session, I start getting all kinds of strange errors
from applications and see this in my dmesg:
VFS: file-max limit 8192 reached
The problem is that the file-max is calculated before memory is fully
initialised and miscalculates how much memory the kernel is using. This
patch recalculates file-max after deferred memory initialisation. Note
that using memory hotplug infrastructure would not have avoided this
problem as the value is not recalculated after memory hot-add.
4.1: files_stat.max_files = 6582781
4.2-rc2: files_stat.max_files = 8192
4.2-rc2 patched: files_stat.max_files = 6562467
Small differences with the patch applied and 4.1 but not enough to matter.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Dave Hansen <dave.hansen@intel.com>
Cc: Nicolai Stange <nicstange@gmail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Alex Ng <alexng@microsoft.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 0e1cc95b4c ("mm: meminit: finish initialisation of struct pages
before basic setup") introduced a rwsem to signal completion of the
initialization workers.
Lockdep complains about possible recursive locking:
=============================================
[ INFO: possible recursive locking detected ]
4.1.0-12802-g1dc51b8 #3 Not tainted
---------------------------------------------
swapper/0/1 is trying to acquire lock:
(pgdat_init_rwsem){++++.+},
at: [<ffffffff8424c7fb>] page_alloc_init_late+0xc7/0xe6
but task is already holding lock:
(pgdat_init_rwsem){++++.+},
at: [<ffffffff8424c772>] page_alloc_init_late+0x3e/0xe6
Replace the rwsem by a completion together with an atomic
"outstanding work counter".
[peterz@infradead.org: Barrier removal on the grounds of being pointless]
[mgorman@suse.de: Applied review feedback]
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Alex Ng <alexng@microsoft.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
early_pfn_to_nid() historically was inherently not SMP safe but only
used during boot which is inherently single threaded or during hotplug
which is protected by a giant mutex.
With deferred memory initialisation there was a thread-safe version
introduced and the early_pfn_to_nid would trigger a BUG_ON if used
unsafely. Memory hotplug hit that check. This patch makes
early_pfn_to_nid introduces a lock to make it safe to use during
hotplug.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Alex Ng <alexng@microsoft.com>
Tested-by: Alex Ng <alexng@microsoft.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Nicolai Stange <nicstange@gmail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A while back, the message queue implementation in the kernel was
improved to use btrees to speed up retrieval of messages, in commit
d6629859b3 ("ipc/mqueue: improve performance of send/recv").
That patch introducing the improved kernel handling of message queues
(using btrees) has, as a by-product, changed the meaning of the QSIZE
field in the pseudo-file created for the queue. Before, this field
reflected the size of the user-data in the queue. Since, it also takes
kernel data structures into account. For example, if 13 bytes of user
data are in the queue, on my machine the file reports a size of 61
bytes.
There was some discussion on this topic before (for example
https://lkml.org/lkml/2014/10/1/115). Commenting on a th lkml, Michael
Kerrisk gave the following background
(https://lkml.org/lkml/2015/6/16/74):
The pseudofiles in the mqueue filesystem (usually mounted at
/dev/mqueue) expose fields with metadata describing a message
queue. One of these fields, QSIZE, as originally implemented,
showed the total number of bytes of user data in all messages in
the message queue, and this feature was documented from the
beginning in the mq_overview(7) page. In 3.5, some other (useful)
work happened to break the user-space API in a couple of places,
including the value exposed via QSIZE, which now includes a measure
of kernel overhead bytes for the queue, a figure that renders QSIZE
useless for its original purpose, since there's no way to deduce
the number of overhead bytes consumed by the implementation.
(The other user-space breakage was subsequently fixed.)
This patch removes the accounting of kernel data structures in the
queue. Reporting the size of these data-structures in the QSIZE field
was a breaking change (see Michael's comment above). Without the QSIZE
field reporting the total size of user-data in the queue, there is no
way to deduce this number.
It should be noted that the resource limit RLIMIT_MSGQUEUE is counted
against the worst-case size of the queue (in both the old and the new
implementation). Therefore, the kernel overhead accounting in QSIZE is
not necessary to help the user understand the limitations RLIMIT imposes
on the processes.
Signed-off-by: Marcus Gelderie <redmnic@gmail.com>
Acked-by: Doug Ledford <dledford@redhat.com>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: John Duffy <jb_duffy@btinternet.com>
Cc: Arto Bendiken <arto@bendiken.net>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
During the change to new btrfs extent-oriented qgroup implement, due to
it doesn't use the old __qgroup_excl_accounting() for exclusive extent,
it didn't free the reserved bytes.
The bug will cause limit function go crazy as the reserved space is
never freed, increasing limit will have no effect and still cause
EQOUT.
The fix is easy, just free reserved bytes for newly created exclusive
extent as what it does before.
Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Yang Dongsheng <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
VBT version 196 increased the size of common_child_dev_config. The parser
code assumed that the size of this structure would not change.
The modified code now copies the amount needed based on the VBT version,
and emits a debug message if the VBT version is unknown (too new);
since the struct config block won't shrink in newer versions it should
be harmless to copy the maximum known size in such cases, so that's
what we do, but emitting the warning is probably sensible anyway.
In the longer run it might make sense to modify the parser code to
use a version/feature mapping, rather than hardcoding things like this,
but for now the variants are fairly managable.
This fixes a regression introduced in
commit 90e4f1592b
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed Mar 25 18:45:58 2015 +0200
drm/i915: Fix the VBT child device parsing for BSW
since we're hitting a DRM_ERROR on older platforms with this.
v2: Stricter size checks
Signed-off-by: David Weinehall <david.weinehall@linux.intel.com>
[danvet: Fixup format string.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Add ID for standalone private data object types and bump ABI version to
3 in order to userpsace features.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add UAPI support for setting byte control ops. Rename the ops structure
to be more generic so it can be sued by other objects too.
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Currently the TLV topology structure is targeted at only supporting the
DB scale data. This patch extends support for the other TLV types so they
can be easily added at a later stage.
TLV structure is moved to common topology control header since it's a
common field for controls and can be processed in a general way.
Users must set a proper access flag for a control since it's used to
decide if the TLV field is valid and if a TLV callback is needed.
Removed the following fields from topology TLV struct:
- size/count: type can decide the size.
- numid: not needed to initialize TLV for kcontrol.
- data: replaced by the type specific struct.
Added TLV structure to generic control header and removed TLV structure
from mixer control.
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
A lot of small fixes here, a few to the core:
- Fix for binding DAPM stream widgets on devices with prefixes assigned
to them
- Minor fixes for the newly added topology interfaces
- Locking and memory leak fixes for DAPM
- Driver specific fixes
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Merge tag 'asoc-fix-v4.2-rc3' into asoc-fix-topology
ASoC: Fixes for v4.2
A lot of small fixes here, a few to the core:
- Fix for binding DAPM stream widgets on devices with prefixes assigned
to them
- Minor fixes for the newly added topology interfaces
- Locking and memory leak fixes for DAPM
- Driver specific fixes
The topology file manifest should include a private data field. This
allows vendors to specify vendor data in the manifest, like
timestamps, hashes, additional information for removing platform
configuration out of drivers and making these configurable per platform
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Some widgets may need sorting within, So add this support in topology.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Spec requires a device reset during cleanup, so do it and avoid warn
in virtio core. And detach unused buffers to avoid memory leak.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Globals are initialized to zero or NULL by GCC. No need to explicitly initialize them.
Signed-off-by: Daniel Machon <dmachon.dev@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch uses kasprintf which combines kzalloc and sprintf.
kasprintf also takes care of the size calculation.
Semantic patch used is as follows:
@@
expression a,flag;
expression list args;
statement S;
@@
a =
- \(kmalloc\|kzalloc\)(...,flag)
+ kasprintf (flag,args)
<... when != a
if (a == NULL || ...) S
...>
- sprintf(a,args);
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace comma between expression statements by a semicolon.
The semantic patch used is as follows:
@@
expression e1,e2;
@@
e1
- ,
+ ;
e2;
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace comma between expression statements by a semicolon.
The semantic patch used is as follows:
@@
expression e1,e2;
@@
e1
- ,
+ ;
e2;
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace comma between expression statements by a semicolon.
The semantic patch used is as follows:
@@
expression e1,e2;
@@
e1
- ,
+ ;
e2;
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch does away with the cast on void * as it is unnecessary.
Semantic patch used is as follows:
@r@
expression x;
void* e;
type T;
identifier f;
@@
(
*((T *)e)
|
((T *)x)[...]
|
((T *)x)->f
|
- (T *)
e
)
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch does away with the cast on void * as it is unnecessary.
Semantic patch used is as follows:
@r@
expression x;
void* e;
type T;
identifier f;
@@
(
*((T *)e)
|
((T *)x)[...]
|
((T *)x)->f
|
- (T *)
e
)
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch does away with the cast on void * as it is unnecessary.
Semantic patch used is as follows:
@r@
expression x;
void* e;
type T;
identifier f;
@@
(
*((T *)e)
|
((T *)x)[...]
|
((T *)x)->f
|
- (T *)
e
)
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Switch the visornic over to use napi. Currently there is a kernel
thread that sits and waits on a wait queue to get notified of incoming
virtual interrupts. It would be nice if we could handle frame reception
using the standard napi processing instead. This patch creates our napi
instance and has the rx thread schedule it
Given that the unisys hypervisor currently requires that queue servicing
be done by a polling loop that wakes up every 2ms, lets instead also
convert that to a timer, which is simpler, and allows us to remove all
the thread starting and stopping code.
Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The character ' ' is removed after the character '('. This fixes the
checkpatch.pl error - "space prohibited after that open
parenthesis '('".
Signed-off-by: Chandra S Gorentla <csgorentla@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Added 'void' keyword in the paranthesis of function definitions, when
there are no arguments to the functions. This fixes the checkpatch.pl
error - "Bad function definition 'function()' should probably be
function(void)".
Signed-off-by: Chandra S Gorentla <csgorentla@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Linux kernel coding style guidelines suggest not using typedefs for
structure and enum types. This patch gets rid of the typedefs for
Ack_session_info_t.
The following Coccinelle semantic patch detects the cases for struct type:
@tn@
identifier i;
type td;
@@
-typedef
struct i { ... }
-td
;
@@
type tn.td;
identifier tn.i;
@@
-td
+ struct i
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
remove spaces at the start of a line
align enum variable with other parameters
Signed-off-by: Ting-Chih Hsiao <s894330@hotmail.com>
Acked-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
cfs_daemonize is long gone and replaced by a proper call to kthread_run,
so update the comment to reflect that fact.
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ever since daemonize was removed in 3.18, there are no longer
any flags passed to kthread_run.
Most of the comments were deleted, but this one lingered on
until now.
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fixed coding style issue by replacing ENOSYS
with EIO because it means 'invalid syscall nr'
and nothing else.
Signed-off-by: Ted Chen <tedc.37zngo@gmail.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
remove extra space and replace tab to space after a variable
Signed-off-by: Jandy Gou <qingsong.gou@ck-telecom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The fw_version and feature_verion should be set correctly when the
firmwares are loaded by SMU on Tonga/Carrzio/Iceland
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Expose feature version to user space for RLC/MEC/MEC2 ucode as well
v2: fix coding style
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
gfx_v7_0_print_status contains a for loop on variable queue which does
not update this variable between each iteration. This is bug is
reported by clang while building allmodconfig LLVMLinux on x86_64:
drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:5126:19: error: variable
'queue' used in loop condition not modified in loop body
[-Werror,-Wloop-analysis]
for (queue = 0; queue < 8; i++) {
^~~~~
Fix this by incrementing variable queue instead of i in this loop.
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Always set num_rbs to 2 for CZ. The 1 RB parts are often harvest
configs. The will get sorted out in mesa when we program
PA_SC_RASTER_CONFIG[_1].
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
*) Fix compiler error when sun4i usb phy driver is built as module
*) Fix SATA Lockup issue in dra7 SoC
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Merge tag 'phy-for-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-linus
Kishon writes:
phy: for 4.2-rc6
*) Fix compiler error when sun4i usb phy driver is built as module
*) Fix SATA Lockup issue in dra7 SoC
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Just two very small & simple patches"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: MTRR: Use default type for non-MTRR-covered gfn before WARN_ON
KVM: s390: Fix hang VCPU hang/loop regression
The I2C core always reports the MODALIAS uevent as "i2c:<client name"
regardless if the driver was matched using the I2C id_table or the
of_match_table. So technically there's no need for a driver to export
the OF table since currently it's not used.
In fact, the I2C device ID table is mandatory for I2C drivers since
a i2c_device_id is passed to the driver's probe function even if the
I2C core used the OF table to match the driver.
And since the I2C core uses different tables, OF-only drivers needs to
have duplicated data that has to be kept in sync and also the dev node
compatible manufacturer prefix is stripped when reporting the MODALIAS.
To avoid the above, the I2C core behavior may be changed in the future
to not require an I2C device table for OF-only drivers and report the
OF module alias. So, it's better to also export the OF table to prevent
breaking module autoloading if that happens.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The I2C core always reports the MODALIAS uevent as "i2c:<client name"
regardless if the driver was matched using the I2C id_table or the
of_match_table. So the driver needs to export the I2C table and this
be built into the module or udev won't have the necessary information
to auto load the correct module when the device is added.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
CPU fan speed going up and down on Dell Studio XPS 8100 for
unknown reasons. Without further debugging on the affected
machine, it is not possible to find the problem.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=100121
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Jan C Peters <jcpeters89@gmail.com>
Cc: stable@vger.kernel.org # v4.0+, will need backport
[groeck: cleaned up description, comments]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The fixup ALC292_FIXUP_DISABLE_AAMIX can fix the white noise of
the headphone on this Dell machine.
Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The patch was munged on commit to re-order these tests resulting in
excessive warnings when trying to do device assignment. Return to
original ordering: https://lkml.org/lkml/2015/7/15/769
Fixes: 3e5d2fdced ("KVM: MTRR: simplify kvm_mtrr_get_guest_memory_type")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Mel Gorman
Nicolai Stange
Marcus Gelderie
Qu Wenruo
David Weinehall
Mark Brown
Liam Girdwood
Mengdong Lin
Vinod Koul
Subhransu S. Prusty
Jason Wang
Daniel Machon
Miguel Bernabeu Diaz
Shraddha Barke
Neil Horman
Chandra S Gorentla
Lars Svensson
Lior Pugatch
Ting-Chih Hsiao
Oleg Drokin
Ian Abbott
Ted Chen
Jandy Gou
Jammy Zhou
Nicolas Iooss
Alex Deucher
Marek Belisko
Greg Kroah-Hartman
Linus Torvalds
Javier Martinez Canillas
Pali Rohár
Hui Wang
Alex Williamson