openwrt/staging/blogic.git
9 years agoMerge tag 'vmwgfx-fixes-4.3-150924' of git://people.freedesktop.org/~thomash/linux...
Dave Airlie [Thu, 24 Sep 2015 08:36:04 +0000 (18:36 +1000)]
Merge tag 'vmwgfx-fixes-4.3-150924' of git://people.freedesktop.org/~thomash/linux into drm-fixes

Pull request of 2015-09-24

Vmwgfx fixes for 4.3:
 - A couple of uninitialized variable fixes by Christian Engelmayer
 - A TTM fix for a bug that causes problems with the new vmwgfx device init
 - A vmwgfx refcounting fix
 - A vmwgfx iomem caching fix
 - A DRM change to allow also control clients to read the drm driver version.

* tag 'vmwgfx-fixes-4.3-150924' of git://people.freedesktop.org/~thomash/linux:
  drm: Allow also control clients to check the drm version
  drm/vmwgfx: Fix uninitialized return in vmw_kms_helper_dirty()
  drm/vmwgfx: Fix uninitialized return in vmw_cotable_unbind()
  drm/vmwgfx: Only build on X86
  drm/ttm: Fix memory space allocation v2
  drm/vmwgfx: Map the fifo as cached
  drm/vmwgfx: Fix up user_dmabuf refcounting

9 years agodrm: Allow also control clients to check the drm version
Thomas Hellstrom [Tue, 15 Sep 2015 08:11:42 +0000 (01:11 -0700)]
drm: Allow also control clients to check the drm version

This should be harmless.
Vmware will, due to old infrastructure reasons, be using a privileged
control client to supply GUI layout information rather than obtaining
it from the device. That control client will be needing access to DRM
version information.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
9 years agodrm/vmwgfx: Fix uninitialized return in vmw_kms_helper_dirty()
Christian Engelmayer [Fri, 18 Sep 2015 22:32:24 +0000 (00:32 +0200)]
drm/vmwgfx: Fix uninitialized return in vmw_kms_helper_dirty()

Function vmw_kms_helper_dirty() uses the uninitialized variable ret as
return value. Make the result deterministic and directly return as the
variable is unused anyway. Detected by Coverity CID 1324255.

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
9 years agodrm/vmwgfx: Fix uninitialized return in vmw_cotable_unbind()
Christian Engelmayer [Fri, 18 Sep 2015 22:31:10 +0000 (00:31 +0200)]
drm/vmwgfx: Fix uninitialized return in vmw_cotable_unbind()

Function vmw_cotable_unbind() uses the uninitialized variable ret as
return value. Make the result deterministic and directly return as
the variable is unused anyway. Detected by Coverity CID 1324256.

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
9 years agoMerge branch 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Wed, 23 Sep 2015 22:13:34 +0000 (08:13 +1000)]
Merge branch 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

radeon and amdgpu fixes for 4.3.  It's a bit bigger than usual since
it's 3 weeks worth of fixes since I was on vacation, then at XDC.
- lots of stability fixes
- suspend and resume fixes
- GPU scheduler fixes
- Misc other fixes

* 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux: (31 commits)
  drm/radeon: add quirk for MSI R7 370
  drm/amdgpu: Sprinkle drm_modeset_lock_all to appease locking checks
  drm/radeon: Sprinkle drm_modeset_lock_all to appease locking checks
  drm/amdgpu: sync ce and me with SWITCH_BUFFER(2)
  drm/amdgpu: integer overflow in amdgpu_mode_dumb_create()
  drm/amdgpu: info leak in amdgpu_gem_metadata_ioctl()
  drm/amdgpu: integer overflow in amdgpu_info_ioctl()
  drm/amdgpu: unwind properly in amdgpu_cs_parser_init()
  drm/amdgpu: Fix max_vblank_count value for current display engines
  drm/amdgpu: use kmemdup rather than duplicating its implementation
  drm/amdgpu: fix UVD suspend and resume for VI APU
  drm/amdgpu: fix the UVD suspend sequence order
  drm/amdgpu: make UVD handle checking more strict
  drm/amdgpu: Disable UVD PG
  drm/amdgpu: more scheduler cleanups v2
  drm/amdgpu: cleanup fence queue init v2
  drm/amdgpu: rename fence->scheduler to sched v2
  drm/amdgpu: cleanup entity init
  drm/amdgpu: refine the scheduler job type conversion
  drm/amdgpu: refine the job naming for amdgpu_job and amdgpu_sched_job
  ...

9 years agodrm/layerscape: fix handling fsl_dcu_drm_plane_index result
Andrzej Hajda [Mon, 21 Sep 2015 13:33:47 +0000 (15:33 +0200)]
drm/layerscape: fix handling fsl_dcu_drm_plane_index result

The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/mgag200: Fix driver_load error handling
Archit Taneja [Thu, 17 Sep 2015 11:00:55 +0000 (16:30 +0530)]
drm/mgag200: Fix driver_load error handling

mgag200_driver_load's error path just calls the drm driver's
driver_unload op. It isn't safe to call this because it doesn't handle
things well if driver_load fails somewhere mid way.

Replace the call to mgag200_driver_unload with a more finegrained
error handling path.

Link: http://lkml.kernel.org/r/55F6E68D.8070800@codeaurora.org
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/mgag200: Fix error handling paths in fbdev driver
Archit Taneja [Thu, 17 Sep 2015 11:00:54 +0000 (16:30 +0530)]
drm/mgag200: Fix error handling paths in fbdev driver

Set up error handling in mgag200_fbdev_init and mgag200fb_create such that
they release the things they allocate, rather than relying on someone
calling mga_fbdev_destroy.

Based on a patch by Sudip Mukherjee <sudipm.mukherjee@gmail.com>

Link: http://lkml.kernel.org/r/55F6E68D.8070800@codeaurora.org
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/qxl: only report first monitor as connected if we have no state
Dave Airlie [Mon, 14 Sep 2015 00:28:34 +0000 (10:28 +1000)]
drm/qxl: only report first monitor as connected if we have no state

If the server isn't new enough to give us state, report the first
monitor as always connected, otherwise believe the server side.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/radeon: add quirk for MSI R7 370
Maxim Sheviakov [Wed, 23 Sep 2015 21:10:51 +0000 (17:10 -0400)]
drm/radeon: add quirk for MSI R7 370

Just adds the quirk for MSI R7 370 Armor 2X
Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=91294

Signed-off-by: Maxim Sheviakov <mrader3940@yandex.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: Sprinkle drm_modeset_lock_all to appease locking checks
Alex Deucher [Wed, 23 Sep 2015 18:32:06 +0000 (14:32 -0400)]
drm/amdgpu: Sprinkle drm_modeset_lock_all to appease locking checks

In

commit 7a3f3d6667f5f9ffd1517f6b21d64bbf5312042c
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Jul 9 23:44:28 2015 +0200

    drm: Check locking in drm_for_each_connector

I added locking checks to drm_for_each_connector but failed that
through drm_helper_connector_dpms -> drm_helper_choose_encoder_dpms
it's used in a few more places in the amdgpu resume/suspend code.

Fix them up.

Note that we could use the connector iterator macros in there too, but
that's for the future.

Port of radeon commit:
drm/radeon: Sprinkle drm_modeset_lock_all to appease locking checks

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/radeon: Sprinkle drm_modeset_lock_all to appease locking checks
Daniel Vetter [Wed, 23 Sep 2015 18:26:45 +0000 (20:26 +0200)]
drm/radeon: Sprinkle drm_modeset_lock_all to appease locking checks

In

commit 7a3f3d6667f5f9ffd1517f6b21d64bbf5312042c
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Jul 9 23:44:28 2015 +0200

    drm: Check locking in drm_for_each_connector

I added locking checks to drm_for_each_connector but failed that
through drm_helper_connector_dpms -> drm_helper_choose_encoder_dpms
it's used in a few more places in the radeon resume/suspend code.

Fix them up.

Note that we could use the connector iterator macros in there too, but
that's for the future.

Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: sync ce and me with SWITCH_BUFFER(2)
monk.liu [Wed, 23 Sep 2015 05:49:58 +0000 (13:49 +0800)]
drm/amdgpu: sync ce and me with SWITCH_BUFFER(2)

we used to adopt wait_reg_mem to let CE wait before DE finish page
updating, but from Tonga+, CE doesn't support wait_reg_mem package so
this logic no longer works.

so here is another approach to do same thing:
Insert two of SWITCH_BUFFER at both front and end of vm_flush can
guarantee that CE not go further to process IB_const before vm_flush
done.

Insert two of SWITCH_BUFFER also works on CI, so remove legency method
to sync CE and ME

v2:
Insert double SWITCH_BUFFER at front of vm flush as well.

Signed-off-by: monk.liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
9 years agodrm/amdgpu: integer overflow in amdgpu_mode_dumb_create()
Dan Carpenter [Wed, 23 Sep 2015 11:00:59 +0000 (14:00 +0300)]
drm/amdgpu: integer overflow in amdgpu_mode_dumb_create()

args->size is a u64.  arg->pitch and args->height are u32.  The
multiplication will overflow instead of using the high 32 bits as
intended.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: info leak in amdgpu_gem_metadata_ioctl()
Dan Carpenter [Wed, 23 Sep 2015 11:00:35 +0000 (14:00 +0300)]
drm/amdgpu: info leak in amdgpu_gem_metadata_ioctl()

There is no limit on args->data.data_size_bytes so we could read beyond
the end of the args->data.data[] array.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: integer overflow in amdgpu_info_ioctl()
Dan Carpenter [Wed, 23 Sep 2015 11:00:12 +0000 (14:00 +0300)]
drm/amdgpu: integer overflow in amdgpu_info_ioctl()

The "alloc_size" calculation can overflow leading to memory corruption.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: unwind properly in amdgpu_cs_parser_init()
Dan Carpenter [Wed, 23 Sep 2015 10:59:28 +0000 (13:59 +0300)]
drm/amdgpu: unwind properly in amdgpu_cs_parser_init()

The amdgpu_cs_parser_init() function doesn't clean up after itself but
instead the caller uses a free everything function amdgpu_cs_parser_fini()
on failure.  This style of error handling is often buggy.  In this
example, we call "drm_free_large(parser->chunks[i].kdata);" when it is
an unintialized pointer or when "parser->chunks" is NULL.

I fixed this bug by adding unwind code so that it frees everything that
it allocates.

I also mode some other very minor changes:
1) Renamed "r" to "ret".
2) Moved the chunk_array allocation to the start of the function.
3) Removed some initializers which are no longer needed.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: Fix max_vblank_count value for current display engines
Alex Deucher [Tue, 22 Sep 2015 14:06:45 +0000 (10:06 -0400)]
drm/amdgpu: Fix max_vblank_count value for current display engines

The value was much too low, which could cause the userspace visible
vblank counter to move backwards when the hardware counter wrapped
around.

Ported from radeon commit:
b0b9bb4dd51f396dcf843831905f729e74b0c8c0

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
9 years agodrm/amdgpu: use kmemdup rather than duplicating its implementation
Andrzej Hajda [Mon, 21 Sep 2015 21:34:39 +0000 (17:34 -0400)]
drm/amdgpu: use kmemdup rather than duplicating its implementation

The patch was generated using fixed coccinelle semantic patch
scripts/coccinelle/api/memdup.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2014320

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: fix UVD suspend and resume for VI APU
Leo Liu [Fri, 11 Sep 2015 21:09:57 +0000 (17:09 -0400)]
drm/amdgpu: fix UVD suspend and resume for VI APU

User space passed the same handle before suspend and after resume,
so we have remove the session and handle destroy, and keep the
firmware untouched.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
9 years agodrm/amdgpu: fix the UVD suspend sequence order
Leo Liu [Fri, 11 Sep 2015 18:22:18 +0000 (14:22 -0400)]
drm/amdgpu: fix the UVD suspend sequence order

Fixes suspend issues with UVD.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
9 years agodrm/amdgpu: make UVD handle checking more strict
Leo Liu [Tue, 15 Sep 2015 14:38:38 +0000 (10:38 -0400)]
drm/amdgpu: make UVD handle checking more strict

Invalid messages can crash the hw otherwise

Ported from radeon commit a1b403da70e038ca6c6c6fe434d1d873546873a3

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
9 years agodrm/amdgpu: Disable UVD PG
Leo Liu [Thu, 10 Sep 2015 17:41:38 +0000 (13:41 -0400)]
drm/amdgpu: Disable UVD PG

This causes problems with multiple suspend/resume cycles.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
9 years agodrm/amdgpu: more scheduler cleanups v2
Christian König [Tue, 8 Sep 2015 18:22:31 +0000 (20:22 +0200)]
drm/amdgpu: more scheduler cleanups v2

Embed the scheduler into the ring structure instead of allocating it.
Use the ring name directly instead of the id.

v2: rebased, whitespace cleanup

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Chunming Zhou<david1.zhou@amd.com>
9 years agodrm/amdgpu: cleanup fence queue init v2
Christian König [Mon, 7 Sep 2015 16:43:02 +0000 (18:43 +0200)]
drm/amdgpu: cleanup fence queue init v2

Move the fence related stuff into amdgpu_fence.c

v2: rework commit message, cause this is actually not a bug

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou<david1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
9 years agodrm/amdgpu: rename fence->scheduler to sched v2
Christian König [Mon, 7 Sep 2015 16:16:49 +0000 (18:16 +0200)]
drm/amdgpu: rename fence->scheduler to sched v2

Just to be consistent with the other members.

v2: rename the ring member as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> (v1)
Reviewed-by: Chunming Zhou<david1.zhou@amd.com>
9 years agodrm/amdgpu: cleanup entity init
Christian König [Mon, 7 Sep 2015 16:07:14 +0000 (18:07 +0200)]
drm/amdgpu: cleanup entity init

Reorder the fields and properly return the kfifo_alloc error code.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Chunming Zhou<david1.zhou@amd.com>
9 years agodrm/amdgpu: refine the scheduler job type conversion
Junwei Zhang [Wed, 9 Sep 2015 01:21:19 +0000 (09:21 +0800)]
drm/amdgpu: refine the scheduler job type conversion

Use container_of rather than casting.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: David Zhou <david1.zhou@amd.com>
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
9 years agodrm/amdgpu: refine the job naming for amdgpu_job and amdgpu_sched_job
Junwei Zhang [Wed, 9 Sep 2015 01:05:55 +0000 (09:05 +0800)]
drm/amdgpu: refine the job naming for amdgpu_job and amdgpu_sched_job

Use consistent naming across functions.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: David Zhou <david1.zhou@amd.com>
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
9 years agodrm/amdgpu: use only one reservation object for each VM v2
Christian König [Fri, 4 Sep 2015 08:47:56 +0000 (10:47 +0200)]
drm/amdgpu: use only one reservation object for each VM v2

Reduces the locking and fencing overhead.

v2: add comment why we need the duplicates list in the GEM op.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
9 years agodrm/amdgpu: validate duplicates in the CS as well
Christian König [Thu, 3 Sep 2015 14:40:39 +0000 (16:40 +0200)]
drm/amdgpu: validate duplicates in the CS as well

This allows for multiple BOs to have the same reservation object.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: export reservation_object from dmabuf to ttm (v2)
Christian König [Thu, 3 Sep 2015 15:34:59 +0000 (17:34 +0200)]
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)

Adds an extra argument to amdgpu_bo_create, which is only used in amdgpu_prime.c.

Port of radeon commit 831b6966a60fe72d85ae3576056b4e4e0775b112.

v2: fix up kfd.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: fix overflow on 32bit systems
Christian König [Mon, 7 Sep 2015 10:32:09 +0000 (12:32 +0200)]
drm/amdgpu: fix overflow on 32bit systems

mem->start is a long, so this can overflow on 32bit systems.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Cc: stable@vger.kernel.org
9 years agodrm/amdgpu: remove process_job callback from the scheduler
Christian König [Mon, 31 Aug 2015 15:28:28 +0000 (17:28 +0200)]
drm/amdgpu: remove process_job callback from the scheduler

Just free the resources immediately after submitting the job.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
9 years agodrm/amdgpu: move scheduler fence callback into fence v2
Christian König [Mon, 31 Aug 2015 15:02:52 +0000 (17:02 +0200)]
drm/amdgpu: move scheduler fence callback into fence v2

And call the processed callback directly after submitting the job.

v2: split adding error handling into separate patch.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
9 years agodrm/amdgpu: signal scheduler fence when hw submission fails v3
Christian König [Wed, 2 Sep 2015 10:03:06 +0000 (12:03 +0200)]
drm/amdgpu: signal scheduler fence when hw submission fails v3

Otherwise the resource blocked by it will never be reclaimed.

v2: add DRM_ERROR.
v3: fix typo in commit message

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Chunming Zhou<david1.zhou@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
9 years agodrm/amdgpu: add tracepoint for scheduler (v2)
Chunming Zhou [Mon, 7 Sep 2015 08:06:53 +0000 (16:06 +0800)]
drm/amdgpu: add tracepoint for scheduler (v2)

track sched job status like the length of job queue and hw job queue.

v2: fix build after rebase

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
9 years agodrm/amdgpu: use write confirm for vm_flush()
Christian König [Sat, 5 Sep 2015 09:59:50 +0000 (11:59 +0200)]
drm/amdgpu: use write confirm for vm_flush()

Make sure the CP waits for the write to be confirmed before
invalidating.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: execution barrier after fence v2
Anatoli Antonovitch [Thu, 3 Sep 2015 15:13:31 +0000 (11:13 -0400)]
drm/amdgpu: execution barrier after fence v2

Insert wait for reg mem after EOP to fix potential issue with vm context switch

v2: move wait to vm_flush() use equal instead of greater than.

Signed-off-by: Anatoli Antonovitch <anatoli.antonovitch@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
9 years agodrm/amdgpu: add option to disable semaphores
Christian König [Sat, 5 Sep 2015 09:12:27 +0000 (11:12 +0200)]
drm/amdgpu: add option to disable semaphores

Provide module parameter to enable/disable them. Still
enabled by default.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
9 years agoLinux 4.3-rc2
Linus Torvalds [Sun, 20 Sep 2015 21:32:34 +0000 (14:32 -0700)]
Linux 4.3-rc2

9 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 20 Sep 2015 04:05:02 +0000 (21:05 -0700)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "Three fixes and a resulting cleanup for -rc2:

   - Andre Przywara reported that he was seeing a warning with the new
     cast inside DMA_ERROR_CODE's definition, and fixed the incorrect
     use.

   - Doug Anderson noticed that kgdb causes a "scheduling while atomic"
     bug.

   - OMAP5 folk noticed that their Thumb-2 compiled X servers crashed
     when enabling support to cover ARMv6 CPUs due to a kernel bug
     leaking some conditional context into the signal handler"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8425/1: kgdb: Don't try to stop the machine when setting breakpoints
  ARM: 8437/1: dma-mapping: fix build warning with new DMA_ERROR_CODE definition
  ARM: get rid of needless #if in signal handling code
  ARM: fix Thumb2 signal handling when ARMv6 is enabled

9 years agoMerge tag 'linux-kselftest-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 20 Sep 2015 03:57:45 +0000 (20:57 -0700)]
Merge tag 'linux-kselftest-4.3-rc2' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This update contains 7 fixes for problems ranging from build failurs
  to incorrect error reporting"

* tag 'linux-kselftest-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: exec: revert to default emit rule
  selftests: change install command to rsync
  selftests: mqueue: simplify the Makefile
  selftests: mqueue: allow extra cflags
  selftests: rename jump label to static_keys
  selftests/seccomp: add support for s390
  seltests/zram: fix syntax error

9 years agoMerge tag 'pm+acpi-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sun, 20 Sep 2015 03:41:31 +0000 (20:41 -0700)]
Merge tag 'pm+acpi-4.3-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael Wysocki:
 "Included are: a somewhat late devfreq update which however is mostly
  fixes and cleanups with one new thing only (the PPMUv2 support on
  Exynos5433), an ACPI cpufreq driver fixup and two ACPI core cleanups
  related to preprocessor directives.

  Specifics:

   - Fix a memory allocation size in the devfreq core (Xiaolong Ye).

   - Fix a mistake in the exynos-ppmu DT binding (Javier Martinez
     Canillas).

   - Add support for PPMUv2 ((Platform Performance Monitoring Unit
     version 2.0) on the Exynos5433 SoCs (Chanwoo Choi).

   - Fix a type casting bug in the Exynos PPMU code (MyungJoo Ham).

   - Assorted devfreq code cleanups and optimizations (Javi Merino,
     MyungJoo Ham, Viresh Kumar).

   - Fix up the ACPI cpufreq driver to use a more lightweight way to get
     to its private data in the ->get() callback (Rafael J Wysocki).

   - Fix a CONFIG_ prefix bug in one of the ACPI drivers and make the
     ACPI subsystem use IS_ENABLED() instead of #ifdefs in function
     bodies (Sudeep Holla)"

* tag 'pm+acpi-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()
  ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED()
  ACPI: int340x_thermal: add missing CONFIG_ prefix
  PM / devfreq: Fix incorrect type issue.
  PM / devfreq: tegra: Update governor to use devfreq_update_stats()
  PM / devfreq: comments for get_dev_status usage updated
  PM / devfreq: drop comment about thermal setting max_freq
  PM / devfreq: cache the last call to get_dev_status()
  PM / devfreq: Drop unlikely before IS_ERR(_OR_NULL)
  PM / devfreq: exynos-ppmu: bit-wise operation bugfix.
  PM / devfreq: exynos-ppmu: Update documentation to support PPMUv2
  PM / devfreq: exynos-ppmu: Add the support of PPMUv2 for Exynos5433
  PM / devfreq: event: Remove incorrect property in exynos-ppmu DT binding

9 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 20 Sep 2015 03:17:40 +0000 (20:17 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A few driver fixes for tegra, rockchip, and st SoCs and a two-liner in
  the framework to avoid oops when get_parent ops return out of range
  values on tegra platforms"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  drivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x
  clk: check for invalid parent index of orphans in __clk_init()
  clk: tegra: dfll: Properly protect OPP list
  clk: rockchip: add critical clock for rk3368

9 years agoMerge tag 'led-fixes-for-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 20 Sep 2015 03:10:30 +0000 (20:10 -0700)]
Merge tag 'led-fixes-for-v4.3-rc2' of git://git./linux/kernel/git/j.anaszewski/linux-leds

Pull LED fixes from Jacek Anaszewski:
 - fix module autoload for six OF platform drivers (aat1290, bcm6328,
   bcm6358, ktd2692, max77693, ns2)
 - aat1290: add missing static modifier
 - ipaq-micro: add missing LEDS_CLASS dependency
 - lp55xx: correct Kconfig dependecy for f/w user helper

* tag 'led-fixes-for-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds:lp55xx: Correct Kconfig dependency for f/w user helper
  leds: leds-ipaq-micro: Add LEDS_CLASS dependency
  leds: aat1290: add 'static' modifier to init_mm_current_scale
  leds: leds-ns2: Fix module autoload for OF platform driver
  leds: max77693: Fix module autoload for OF platform driver
  leds: ktd2692: Fix module autoload for OF platform driver
  leds: bcm6358: Fix module autoload for OF platform driver
  leds: bcm6328: Fix module autoload for OF platform driver
  leds: aat1290: Fix module autoload for OF platform driver

9 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Linus Torvalds [Sun, 20 Sep 2015 03:04:11 +0000 (20:04 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 "The new hfi1 driver in staging/rdma has had a number of fixup patches
  since being added to the tree.  This is the first batch of those fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/hfi: Properly set permissions for user device files
  IB/hfi1: mask vs shift confusion
  IB/hfi1: clean up some defines
  IB/hfi1: info leak in get_ctxt_info()
  IB/hfi1: fix a locking bug
  IB/hfi1: checking for NULL instead of IS_ERR
  IB/hfi1: fix sdma_descq_cnt parameter parsing
  IB/hfi1: fix copy_to/from_user() error handling
  IB/hfi1: fix pstateinfo from returning improperly byteswapped value

9 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Sun, 20 Sep 2015 02:13:03 +0000 (19:13 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:

 - a boot regression (since v4.2) fix for some ARM configurations from
   Tyler

 - regression (since v4.1) fixes for mkfs.xfs on a DAX enabled device
   from Jeff.  These are tagged for -stable.

 - a pair of locking fixes from Axel that are hidden from lockdep since
   they involve device_lock().  The "btt" one is tagged for -stable, the
   other only applies to the new "pfn" mechanism in v4.3.

 - a fix for the pmem ->rw_page() path to use wmb_pmem() from Ross.

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  mm: fix type cast in __pfn_to_phys()
  pmem: add proper fencing to pmem_rw_page()
  libnvdimm: pfn_devs: Fix locking in namespace_store
  libnvdimm: btt_devs: Fix locking in namespace_store
  blockdev: don't set S_DAX for misaligned partitions
  dax: fix O_DIRECT I/O to the last block of a blockdev

9 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Sun, 20 Sep 2015 01:57:09 +0000 (18:57 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "This is a bit bigger than it should be, but I could (did) not want to
  send it off last week due to both wanting extra testing, and expecting
  a fix for the bounce regression as well.  In any case, this contains:

   - Fix for the blk-merge.c compilation warning on gcc 5.x from me.

   - A set of back/front SG gap merge fixes, from me and from Sagi.
     This ensures that we honor SG gapping for integrity payloads as
     well.

   - Two small fixes for null_blk from Matias, fixing a leak and a
     capacity propagation issue.

   - A blkcg fix from Tejun, fixing a NULL dereference.

   - A fast clone optimization from Ming, fixing a performance
     regression since the arbitrarily sized bio's were introduced.

   - Also from Ming, a regression fix for bouncing IOs"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: fix bounce_end_io
  block: blk-merge: fast-clone bio when splitting rw bios
  block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg
  block: Copy a user iovec if it includes gaps
  block: Refuse adding appending a gapped integrity page to a bio
  block: Refuse request/bio merges with gaps in the integrity payload
  block: Check for gaps on front and back merges
  null_blk: fix wrong capacity when bs is not 512 bytes
  null_blk: fix memory leak on cleanup
  block: fix bogus compiler warnings in blk-merge.c

9 years agofs-writeback: unplug before cond_resched in writeback_sb_inodes
Chris Mason [Fri, 18 Sep 2015 17:35:08 +0000 (13:35 -0400)]
fs-writeback: unplug before cond_resched in writeback_sb_inodes

Commit 505a666ee3fc ("writeback: plug writeback in wb_writeback() and
writeback_inodes_wb()") has us holding a plug during writeback_sb_inodes,
which increases the merge rate when relatively contiguous small files
are written by the filesystem.  It helps both on flash and spindles.

For an fs_mark workload creating 4K files in parallel across 8 drives,
this commit improves performance ~9% more by unplugging before calling
cond_resched().  cond_resched() doesn't trigger an implicit unplug, so
explicitly getting the IO down to the device before scheduling reduces
latencies for anyone waiting on clean pages.

It also cuts down on how often we use kblockd to unplug, which means
less work bouncing from one workqueue to another.

Many more details about how we got here:

  https://lkml.org/lkml/2015/9/11/570

Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agomm: fix type cast in __pfn_to_phys()
Tyler Baker [Sat, 19 Sep 2015 07:58:10 +0000 (03:58 -0400)]
mm: fix type cast in __pfn_to_phys()

The various definitions of __pfn_to_phys() have been consolidated to
use a generic macro in include/asm-generic/memory_model.h. This hit
mainline in the form of 012dcef3f058 "mm: move __phys_to_pfn and
__pfn_to_phys to asm/generic/memory_model.h". When the generic macro
was implemented the type cast to phys_addr_t was dropped which caused
boot regressions on ARM platforms with more than 4GB of memory and
LPAE enabled.

It was suggested to use PFN_PHYS() defined in include/linux/pfn.h
as provides the correct logic and avoids further duplication.

Reported-by: kernelci.org bot <bot@kernelci.org>
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoMerge branch 'acpi-bus'
Rafael J. Wysocki [Fri, 18 Sep 2015 21:07:46 +0000 (23:07 +0200)]
Merge branch 'acpi-bus'

* acpi-bus:
  ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED()
  ACPI: int340x_thermal: add missing CONFIG_ prefix

9 years agoMerge branches 'pm-cpufreq' and 'pm-devfreq'
Rafael J. Wysocki [Fri, 18 Sep 2015 21:05:28 +0000 (23:05 +0200)]
Merge branches 'pm-cpufreq' and 'pm-devfreq'

* pm-cpufreq:
  cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()

* pm-devfreq:
  PM / devfreq: Fix incorrect type issue.
  PM / devfreq: tegra: Update governor to use devfreq_update_stats()
  PM / devfreq: comments for get_dev_status usage updated
  PM / devfreq: drop comment about thermal setting max_freq
  PM / devfreq: cache the last call to get_dev_status()
  PM / devfreq: Drop unlikely before IS_ERR(_OR_NULL)
  PM / devfreq: exynos-ppmu: bit-wise operation bugfix.
  PM / devfreq: exynos-ppmu: Update documentation to support PPMUv2
  PM / devfreq: exynos-ppmu: Add the support of PPMUv2 for Exynos5433
  PM / devfreq: event: Remove incorrect property in exynos-ppmu DT binding

9 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 18 Sep 2015 16:28:20 +0000 (09:28 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio fixes and cleanups from Michael Tsirkin:
 "This fixes the virtio-test tool, and improves the error handling for
  virtio-ccw"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio/s390: handle failures of READ_VQ_CONF ccw
  tools/virtio: propagate V=X to kernel build
  vhost: move features to core
  tools/virtio: fix build after 4.2 changes

9 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 18 Sep 2015 16:23:08 +0000 (09:23 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Mostly stable material, a lot of ARM fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (22 commits)
  sched: access local runqueue directly in single_task_running
  arm/arm64: KVM: Remove 'config KVM_ARM_MAX_VCPUS'
  arm64: KVM: Remove all traces of the ThumbEE registers
  arm: KVM: Disable virtual timer even if the guest is not using it
  arm64: KVM: Disable virtual timer even if the guest is not using it
  arm/arm64: KVM: vgic: Check for !irqchip_in_kernel() when mapping resources
  KVM: s390: Replace incorrect atomic_or with atomic_andnot
  arm: KVM: Fix incorrect device to IPA mapping
  arm64: KVM: Fix user access for debug registers
  KVM: vmx: fix VPID is 0000H in non-root operation
  KVM: add halt_attempted_poll to VCPU stats
  kvm: fix zero length mmio searching
  kvm: fix double free for fast mmio eventfd
  kvm: factor out core eventfd assign/deassign logic
  kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd
  KVM: make the declaration of functions within 80 characters
  KVM: arm64: add workaround for Cortex-A57 erratum #852523
  KVM: fix polling for guest halt continued even if disable it
  arm/arm64: KVM: Fix PSCI affinity info return value for non valid cores
  arm64: KVM: set {v,}TCR_EL2 RES1 bits
  ...

9 years agoIB/hfi: Properly set permissions for user device files
Ira Weiny [Thu, 17 Sep 2015 17:47:49 +0000 (13:47 -0400)]
IB/hfi: Properly set permissions for user device files

Some of the device files are required to be user accessible for PSM while
most should remain accessible only by root.

Add a parameter to hfi1_cdev_init which controls if the user should have access
to this device which places it in a different class with the appropriate
devnode callback.

In addition set the devnode call back for the existing class to be a bit more
explicit for those permissions.

Finally remove the unnecessary null check before class_destroy

Tested-by: Donald Dutile <ddutile@redhat.com>
Signed-off-by: Haralanov, Mitko (mitko.haralanov@intel.com)
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: mask vs shift confusion
Dan Carpenter [Wed, 16 Sep 2015 16:03:45 +0000 (19:03 +0300)]
IB/hfi1: mask vs shift confusion

We are shifting by the _MASK macros instead of the _SHIFT ones.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: clean up some defines
Dan Carpenter [Wed, 16 Sep 2015 16:02:54 +0000 (19:02 +0300)]
IB/hfi1: clean up some defines

I added spaces around operators so it matches kernel style because
normally "-1ULL" is a number and " - 1" is a subtract operation.  Also
removed some superflous "ULL" types so "1ULL" becomes "1".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: info leak in get_ctxt_info()
Dan Carpenter [Wed, 16 Sep 2015 06:42:25 +0000 (09:42 +0300)]
IB/hfi1: info leak in get_ctxt_info()

The cinfo struct has a hole after the last struct member so we need to
zero it out.  Otherwise we disclose some uninitialized stack data.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix a locking bug
Dan Carpenter [Wed, 16 Sep 2015 06:22:51 +0000 (09:22 +0300)]
IB/hfi1: fix a locking bug

mutex_trylock() returns zero on failure, not EBUSY.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: checking for NULL instead of IS_ERR
Dan Carpenter [Wed, 16 Sep 2015 06:22:20 +0000 (09:22 +0300)]
IB/hfi1: checking for NULL instead of IS_ERR

__get_txreq() returns an ERR_PTR() but this checks for NULL so it would
oops on failure.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix sdma_descq_cnt parameter parsing
Mike Marciniszyn [Tue, 15 Sep 2015 14:19:27 +0000 (10:19 -0400)]
IB/hfi1: fix sdma_descq_cnt parameter parsing

The boolean tests should have been or-ed.

Reported-by: David Binderman <dcb314@hotmail.com>
Reviewed-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix copy_to/from_user() error handling
Dan Carpenter [Tue, 15 Sep 2015 10:35:25 +0000 (13:35 +0300)]
IB/hfi1: fix copy_to/from_user() error handling

copy_to/from_user() returns the number of bytes which we were not able
to copy.  It doesn't return an error code.

Also a couple places had a printk() on error and I removed that because
people can take advantage of it to fill /var/log/messages with spam.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoIB/hfi1: fix pstateinfo from returning improperly byteswapped value
Ira Weiny [Wed, 9 Sep 2015 05:28:21 +0000 (01:28 -0400)]
IB/hfi1: fix pstateinfo from returning improperly byteswapped value

Byteswap link_width_downgrade_*_active values before sending on the wire.  In
addition properly define the Port State Info structure.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Christian Gomez <christian.gomez@intel.com>
Signed-off-by: Rimmer, Todd <todd.rimmer@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
9 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 18 Sep 2015 15:11:42 +0000 (08:11 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "This is a rather large update post rc1 due to the final steps of
  cleanups and API changes which had to wait for the preparatory patches
  to hit your tree.

   - Regression fixes for ARM GIC irqchips

   - Regression fixes and lockdep anotations for renesas irq chips

   - The leftovers of the cleanup and preparatory patches which have
     been ignored by maintainers

   - Final conversions of the newly merged users of obsolete APIs

   - Final removal of obsolete APIs

   - Final removal of ARM artifacts which had been introduced during the
     conversion of ARM to the generic interrupt code.

   - Final split of the irq_data into chip specific and common data to
     reflect the needs of hierarchical irq domains.

   - Treewide removal of the first argument of interrupt flow handlers,
     i.e. the irq number, which is not used by the majority of handlers
     and simple to retrieve from the other argument the irq descriptor.

   - A few comment updates and build warning fixes"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  arm64: Remove ununsed set_irq_flags
  ARM: Remove ununsed set_irq_flags
  sh: Kill off set_irq_flags usage
  irqchip: Kill off set_irq_flags usage
  gpu/drm: Kill off set_irq_flags usage
  genirq: Remove irq argument from irq flow handlers
  genirq: Move field 'msi_desc' from irq_data into irq_common_data
  genirq: Move field 'affinity' from irq_data into irq_common_data
  genirq: Move field 'handler_data' from irq_data into irq_common_data
  genirq: Move field 'node' from irq_data into irq_common_data
  irqchip/gic-v3: Use IRQD_FORWARDED_TO_VCPU flag
  irqchip/gic: Use IRQD_FORWARDED_TO_VCPU flag
  genirq: Provide IRQD_FORWARDED_TO_VCPU status flag
  genirq: Simplify irq_data_to_desc()
  genirq: Remove __irq_set_handler_locked()
  pinctrl/pistachio: Use irq_set_handler_locked
  gpio: vf610: Use irq_set_handler_locked
  powerpc/mpc8xx: Use irq_set_handler_locked()
  powerpc/ipic: Use irq_set_handler_locked()
  powerpc/cpm2: Use irq_set_handler_locked()
  ...

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 18 Sep 2015 15:06:28 +0000 (08:06 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fix from Thomas Gleixner:
 "A single regression fix for the x86 dma allocator which got wreckaged
  in the merge window"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/pci/dma: Fix gfp flags for coherent DMA memory allocation

9 years agoMerge tag 'powerpc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 18 Sep 2015 15:01:06 +0000 (08:01 -0700)]
Merge tag 'powerpc-4.3-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix 32-bit TCE table init in kdump kernel from Nish

 - Fix kdump with non-power-of-2 crashkernel= from Nish

 - Abort cxl_pci_enable_device_hook() if PCI channel is offline from
   Andrew

 - Fix to release DRC when configure_connector() fails from Bharata

 - Wire up sys_userfaultfd()

 - Fix race condition in tearing down MSI interrupts from Paul

 - Fix unbalanced pci_dev_get() in cxl_probe() from Daniel

 - Fix cxl build failure due to -Wunused-variable gcc behaviour change
   from Ian

 - Tell the toolchain to use ABI v2 when building an LE boot wrapper
   from Benh

 - Fix THP to recompute hash value after a failed update from Aneesh

 - 32-bit memcpy/memset: only use dcbz once cache is enabled from
   Christophe

* tag 'powerpc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc32: memset: only use dcbz once cache is enabled
  powerpc32: memcpy: only use dcbz once cache is enabled
  powerpc/mm: Recompute hash value after a failed update
  powerpc/boot: Specify ABI v2 when building an LE boot wrapper
  cxl: Fix build failure due to -Wunused-variable behaviour change
  cxl: Fix unbalanced pci_dev_get in cxl_probe
  powerpc/MSI: Fix race condition in tearing down MSI interrupts
  powerpc: Wire up sys_userfaultfd()
  powerpc/pseries: Release DRC when configure_connector fails
  cxl: abort cxl_pci_enable_device_hook() if PCI channel is offline
  powerpc/powernv/pci-ioda: fix kdump with non-power-of-2 crashkernel=
  powerpc/powernv/pci-ioda: fix 32-bit TCE table init in kdump kernel

9 years agosched: access local runqueue directly in single_task_running
Dominik Dingel [Fri, 18 Sep 2015 09:27:45 +0000 (11:27 +0200)]
sched: access local runqueue directly in single_task_running

Commit 2ee507c47293 ("sched: Add function single_task_running to let a task
check if it is the only task running on a cpu") referenced the current
runqueue with the smp_processor_id.  When CONFIG_DEBUG_PREEMPT is enabled,
that is only allowed if preemption is disabled or the currrent task is
bound to the local cpu (e.g. kernel worker).

With commit f78195129963 ("kvm: add halt_poll_ns module parameter") KVM
calls single_task_running. If CONFIG_DEBUG_PREEMPT is enabled that
generates a lot of kernel messages.

To avoid adding preemption in that cases, as it would limit the usefulness,
we change single_task_running to access directly the cpu local runqueue.

Cc: Tim Chen <tim.c.chen@linux.intel.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Fixes: 2ee507c472939db4b146d545352b8a7c79ef47f8
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
9 years agoMerge tag 'platform-drivers-x86-v4.3-2' of git://git.infradead.org/users/dvhart/linux...
Linus Torvalds [Fri, 18 Sep 2015 04:41:02 +0000 (21:41 -0700)]
Merge tag 'platform-drivers-x86-v4.3-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull x86 platform driver fixes from Darren Hart:
 "Fix an issue introduced by the previous major toshiba rework.  Add a
  quirk.  Workaround a few platform specific firmware items.  One
  cleanup to wmi I inadvertently dropped from a previous pull request.

  Details:

  hp-wmi:
   - limit hotkey enable

  toshiba_acpi:
   - Fix hotkeys registration on some toshiba models
   - Fix USB Sleep and Music always disabled

  wmi:
   - Remove private %pUL implementation

  asus-nb-wmi:
   - Add wapf=4 quirk for X456UA/X456UF"

* tag 'platform-drivers-x86-v4.3-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  hp-wmi: limit hotkey enable
  toshiba_acpi: Fix hotkeys registration on some toshiba models
  toshiba_acpi: Fix USB Sleep and Music always disabled
  wmi: Remove private %pUL implementation
  asus-nb-wmi: Add wapf=4 quirk for X456UA/X456UF

9 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 18 Sep 2015 04:16:47 +0000 (21:16 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from ANdrew Morton:
 "8 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  revert "mm: make sure all file VMAs have ->vm_ops set"
  MAINTAINERS: update LTP mailing list
  userfaultfd: add missing mmput() in error path
  lib/string_helpers.c: fix infinite loop in string_get_size()
  alpha: lib: export __delay
  alpha: io: define ioremap_uc
  kasan: fix last shadow judgement in memory_is_poisoned_16()
  zram: fix possible use after free in zcomp_create()

9 years agorevert "mm: make sure all file VMAs have ->vm_ops set"
Andrew Morton [Thu, 17 Sep 2015 23:02:00 +0000 (16:02 -0700)]
revert "mm: make sure all file VMAs have ->vm_ops set"

Revert commit 6dc296e7df4c "mm: make sure all file VMAs have ->vm_ops
set".

Will Deacon reports that it "causes some mmap regressions in LTP, which
appears to use a MAP_PRIVATE mmap of /dev/zero as a way to get anonymous
pages in some of its tests (specifically mmap10 [1])".

William Shuman reports Oracle crashes.

So revert the patch while we work out what to do.

Reported-by: William Shuman <wshuman3@gmail.com>
Reported-by: Will Deacon <will.deacon@arm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMAINTAINERS: update LTP mailing list
Cyril Hrubis [Thu, 17 Sep 2015 23:01:57 +0000 (16:01 -0700)]
MAINTAINERS: update LTP mailing list

[akpm@linux-foundation.org: Wanlong Gao has moved]
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
Cc: Jan Stancek <jstancek@redhat.com>
Cc: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
Cc: Alexey Kodanev <alexey.kodanev@oracle.com>
Cc: Wanlong Gao <wanlong.gao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agouserfaultfd: add missing mmput() in error path
Eric Biggers [Thu, 17 Sep 2015 23:01:54 +0000 (16:01 -0700)]
userfaultfd: add missing mmput() in error path

This fixes a memleak if anon_inode_getfile() fails in userfaultfd().

Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agolib/string_helpers.c: fix infinite loop in string_get_size()
Vitaly Kuznetsov [Thu, 17 Sep 2015 23:01:51 +0000 (16:01 -0700)]
lib/string_helpers.c: fix infinite loop in string_get_size()

Some string_get_size() calls (e.g.:
 string_get_size(1, 512, STRING_UNITS_10, ..., ...)
 string_get_size(15, 64, STRING_UNITS_10, ..., ...)
) result in an infinite loop. The problem is that if size is equal to
divisor[units]/blk_size and is smaller than divisor[units] we'll end
up with size == 0 when we start doing sf_cap calculations:

For string_get_size(1, 512, STRING_UNITS_10, ..., ...) case:
   ...
   remainder = do_div(size, divisor[units]); -> size is 0, remainder is 1
   remainder *= blk_size; -> remainder is 512
   ...
   size *= blk_size; -> size is still 0
   size += remainder / divisor[units]; -> size is still 0

The caller causing the issue is sd_read_capacity(), the problem was
noticed on Hyper-V, such weird size was reported by host when scanning
collides with device removal.  This is probably a separate issue worth
fixing, this patch is intended to prevent the library routine from
infinite looping.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: James Bottomley <JBottomley@Odin.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoalpha: lib: export __delay
Sudip Mukherjee [Thu, 17 Sep 2015 23:01:49 +0000 (16:01 -0700)]
alpha: lib: export __delay

__delay was not exported as a result while building with allmodconfig we
were getting build error of undefined symbol.  __delay is being used by:
drivers/net/phy/mdio-octeon.c

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoalpha: io: define ioremap_uc
Sudip Mukherjee [Thu, 17 Sep 2015 23:01:46 +0000 (16:01 -0700)]
alpha: io: define ioremap_uc

ioremap_uc was not defined and as a result while building with
allmodconfig were getting build error of: implicit declaration of
function 'ioremap_uc'.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agokasan: fix last shadow judgement in memory_is_poisoned_16()
Xishi Qiu [Thu, 17 Sep 2015 23:01:43 +0000 (16:01 -0700)]
kasan: fix last shadow judgement in memory_is_poisoned_16()

The shadow which correspond 16 bytes memory may span 2 or 3 bytes.  If
the memory is aligned on 8, then the shadow takes only 2 bytes.  So we
check "shadow_first_bytes" is enough, and need not to call
"memory_is_poisoned_1(addr + 15);".  But the code "if
(likely(!last_byte))" is wrong judgement.

e.g.  addr=0, so last_byte = 15 & KASAN_SHADOW_MASK = 7, then the code
will continue to call "memory_is_poisoned_1(addr + 15);"

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrey Konovalov <adech.fo@gmail.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michal Marek <mmarek@suse.cz>
Cc: <zhongjiang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agozram: fix possible use after free in zcomp_create()
Luis Henriques [Thu, 17 Sep 2015 23:01:40 +0000 (16:01 -0700)]
zram: fix possible use after free in zcomp_create()

zcomp_create() verifies the success of zcomp_strm_{multi,single}_create()
through comp->stream, which can potentially be pointing to memory that
was freed if these functions returned an error.

While at it, replace a 'ERR_PTR(-ENOMEM)' by a more generic
'ERR_PTR(error)' as in the future zcomp_strm_{multi,siggle}_create()
could return other error codes.  Function documentation updated
accordingly.

Fixes: beca3ec71fe5 ("zram: add multi stream functionality")
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agohp-wmi: limit hotkey enable
Kyle Evans [Fri, 11 Sep 2015 15:40:17 +0000 (10:40 -0500)]
hp-wmi: limit hotkey enable

Do not write initialize magic on systems that do not have
feature query 0xb. Fixes Bug #82451.

Redefine FEATURE_QUERY to align with 0xb and FEATURE2 with 0xd
for code clearity.

Add a new test function, hp_wmi_bios_2008_later() & simplify
hp_wmi_bios_2009_later(), which fixes a bug in cases where
an improper value is returned. Probably also fixes Bug #69131.

Add missing __init tag.

Signed-off-by: Kyle Evans <kvans32@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Thu, 17 Sep 2015 19:32:40 +0000 (12:32 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

Pull Ceph fixes from Sage Weil:
 "These are both fixes to the new and improved keepalive2 behavior"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  libceph: advertise support for keepalive2
  libceph: don't access invalid memory in keepalive2 path

9 years agoMerge tag 'for-v4.3-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux...
Linus Torvalds [Thu, 17 Sep 2015 19:25:42 +0000 (12:25 -0700)]
Merge tag 'for-v4.3-rc' of git://git./linux/kernel/git/sre/linux-power-supply

Pull power supply fixes from Sebastian Reichel:
 "twl4030-charger fixes"

* tag 'for-v4.3-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
  twl4030_charger: fix another compile error
  Revert "twl4030_charger: correctly handle -EPROBE_DEFER from devm_usb_get_phy_by_node"

9 years agodrivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x
Gabriel Fernandez [Wed, 16 Sep 2015 07:42:59 +0000 (09:42 +0200)]
drivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x

Use a generic name for this kind of PLL

Correction in dts files are already done here:
commit 5eb26c605909 ("ARM: STi: DT: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x")

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
9 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Thu, 17 Sep 2015 18:28:17 +0000 (11:28 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "This addresses some problems with filesystem writeback due to the
  recently merged hardware DBM patches, which caused us to treat some
  read-only pages as dirty.

  There are also some other, less significant fixes that are described
  in the summary below:

  A mixture of fixes for regressions introduced during the merge window,
  some longer standing problems that we spotted and a couple of hardware
  errata.  The main changes are:

   - Fix fallout from the h/w DBM patches, causing filesystem writeback
     issues on both v8 and v8.1 CPUs

   - Workaround for Cortex-A53 erratum #843419 in the module loader

   - Fix for long-standing issue with compat big-endian signal handlers
     using the saved floating point state"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: errata: add module build workaround for erratum #843419
  arm64: compat: fix vfp save/restore across signal handlers in big-endian
  arm64: cpu hotplug: ensure we mask out CPU_TASKS_FROZEN in notifiers
  arm64: head.S: initialise mdcr_el2 in el2_setup
  arm64: enable generic idle loop
  arm64: pgtable: use a single bit for PTE_WRITE regardless of DBM
  arm64: Fix pte_modify() to preserve the hardware dirty information
  arm64: Fix the pte_hw_dirty() check when AF/DBM is enabled
  arm64: dma-mapping: check whether cma area is initialized or not

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 17 Sep 2015 18:01:34 +0000 (11:01 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 - misc fixes all around the map
 - block non-root vm86(old) if mmap_min_addr != 0
 - two small debuggability improvements
 - removal of obsolete paravirt op

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform: Fix Geode LX timekeeping in the generic x86 build
  x86/apic: Serialize LVTT and TSC_DEADLINE writes
  x86/ioapic: Force affinity setting in setup_ioapic_dest()
  x86/paravirt: Remove the unused pv_time_ops::get_tsc_khz method
  x86/ldt: Fix small LDT allocation for Xen
  x86/vm86: Fix the misleading CONFIG_VM86 Kconfig help text
  x86/cpu: Print family/model/stepping in hex
  x86/vm86: Block non-root vm86(old) if mmap_min_addr != 0
  x86/alternatives: Make optimize_nops() interrupt safe and synced
  x86/mm/srat: Print non-volatile flag in SRAT
  x86/cpufeatures: Enable cpuid for Intel SHA extensions

9 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 17 Sep 2015 17:55:25 +0000 (10:55 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Ingo Molnar:
 "A fix for an abs()/abs64() bug that caused too slow NTP convergence on
  32-bit kernels, plus a removal of an obsolete clockevents driver
  facility after all users got converted during the merge window"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevents: Remove unused set_mode() callback
  time: Fix timekeeping_freqadjust()'s incorrect use of abs() instead of abs64()

9 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 17 Sep 2015 17:49:42 +0000 (10:49 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "A migrate_tasks() locking fix, and a late-coming nohz change plus a
  nohz debug check"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: 'Annotate' migrate_tasks()
  nohz: Assert existing housekeepers when nohz full enabled
  nohz: Affine unpinned timers to housekeepers

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 17 Sep 2015 17:37:46 +0000 (10:37 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo MOlnar:
 "Mostly tooling fixes, but also two x86 PMU driver fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tests: Fix software clock events test setting maps
  perf tests: Fix task exit test setting maps
  perf evlist: Fix create_syswide_maps() not propagating maps
  perf evlist: Fix add() not propagating maps
  perf evlist: Factor out a function to propagate maps for a single evsel
  perf evlist: Make create_maps() use set_maps()
  perf evlist: Make set_maps() more resilient
  perf evsel: Add own_cpus member
  perf evlist: Fix missing thread_map__put in propagate_maps()
  perf evlist: Fix splice_list_tail() not setting evlist
  perf evlist: Add has_user_cpus member
  perf evlist: Remove redundant validation from propagate_maps()
  perf evlist: Simplify set_maps() logic
  perf evlist: Simplify propagate_maps() logic
  perf top: Fix segfault pressing -> with no hist entries
  perf header: Fixup reading of HEADER_NRCPUS feature
  perf/x86/intel: Fix constraint access
  perf/x86/intel/bts: Set event->hw.itrace_started in pmu::start to match the new logic
  perf tools: Fix use of wrong event when processing exit events
  perf tools: Fix parse_events_add_pmu caller

9 years agolibceph: advertise support for keepalive2
Ilya Dryomov [Mon, 14 Sep 2015 09:44:22 +0000 (12:44 +0300)]
libceph: advertise support for keepalive2

We are the client, but advertise keepalive2 anyway - for consistency,
if nothing else.  In the future the server might want to know whether
its clients support keepalive2.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
9 years agolibceph: don't access invalid memory in keepalive2 path
Ilya Dryomov [Mon, 14 Sep 2015 13:01:05 +0000 (16:01 +0300)]
libceph: don't access invalid memory in keepalive2 path

This

    struct ceph_timespec ceph_ts;
    ...
    con_out_kvec_add(con, sizeof(ceph_ts), &ceph_ts);

wraps ceph_ts into a kvec and adds it to con->out_kvec array, yet
ceph_ts becomes invalid on return from prepare_write_keepalive().  As
a result, we send out bogus keepalive2 stamps.  Fix this by encoding
into a ceph_timespec member, similar to how acks are read and written.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
9 years agoblock: fix bounce_end_io
Ming Lei [Thu, 17 Sep 2015 16:06:28 +0000 (00:06 +0800)]
block: fix bounce_end_io

When bio bounce is involved, one new bio and its biovecs are
cloned from the comming bio, which can be one fast-cloned bio
from upper layer(such as dm).

So it is obviously wrong to assume the start index of the coming(
original) bio's io vector is zero, which can be any value between
0 and (bi_max_vecs - 1), especially in case of bio split.

This patch fixes Fedora's booting oops on i386, often with the
following kernel log together:

> [    9.026738] systemd[1]: Switching root.
> [    9.036467] systemd-journald[149]: Received SIGTERM from PID 1
> (systemd).
> [    9.082262] BUG: Bad page state in process kworker/u5:1  pfn:372ac
> [    9.083989] page:f3d32ae0 count:0 mapcount:0 mapping:f2252178
> index:0x16a
> [    9.085755] flags: 0x40020021(locked|lru|mappedtodisk)
> [    9.087284] page dumped because: page still charged to cgroup
> [    9.088772] bad because of flags:
> [    9.089731] flags: 0x21(locked|lru)
> [    9.090818] page->mem_cgroup:f2c3e400

Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Tested-by: Adam Williamson <awilliam@redhat.com>
Cc: Ming Lin <mlin@kernel.org>
Cc: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
9 years agoblock: blk-merge: fast-clone bio when splitting rw bios
Ming Lei [Thu, 17 Sep 2015 15:58:38 +0000 (09:58 -0600)]
block: blk-merge: fast-clone bio when splitting rw bios

biovecs has become immutable since v3.13, so it isn't necessary
to allocate biovecs for the new cloned bios, then we can save
one extra biovecs allocation/copy, and the allocation is often
not fixed-length and a bit more expensive.

For example, if the 'max_sectors_kb' of null blk's queue is set
as 16(32 sectors) via sysfs just for making more splits, this patch
can increase throught about ~70% in the sequential read test over
null_blk(direct io, bs: 1M).

Cc: Christoph Hellwig <hch@infradead.org>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Ming Lin <ming.l@ssi.samsung.com>
Cc: Dongsu Park <dpark@posteo.net>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
This fixes a performance regression introduced by commit 54efd50bfd,
and allows us to take full advantage of the fact that we have immutable
bio_vecs. Hand applied, as it rejected violently with commit
5014c311baa2.

Signed-off-by: Jens Axboe <axboe@fb.com>
9 years agopmem: add proper fencing to pmem_rw_page()
Ross Zwisler [Wed, 16 Sep 2015 20:52:21 +0000 (14:52 -0600)]
pmem: add proper fencing to pmem_rw_page()

pmem_rw_page() needs to call wmb_pmem() on writes to make sure that the
newly written data is durable.  This flow was added to pmem_rw_bytes()
and pmem_make_request() with this commit:

commit 61031952f4c8 ("arch, x86: pmem api for ensuring durability of
persistent memory updates")

...the pmem_rw_page() path was missed.

Cc: <stable@vger.kernel.org>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agolibnvdimm: pfn_devs: Fix locking in namespace_store
Axel Lin [Wed, 16 Sep 2015 13:25:38 +0000 (21:25 +0800)]
libnvdimm: pfn_devs: Fix locking in namespace_store

Always take device_lock() before nvdimm_bus_lock() to prevent deadlock.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 17 Sep 2015 15:45:23 +0000 (08:45 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:
 "Spinlock performance regression fix, plus documentation fixes"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/static_keys: Fix up the static keys documentation
  locking/qspinlock/x86: Only emit the test-and-set fallback when building guest support
  locking/qspinlock/x86: Fix performance regression under unaccelerated VMs
  locking/static_keys: Fix a silly typo

9 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 17 Sep 2015 15:44:27 +0000 (08:44 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull RCU fix from Ingo Molnar:
 "Fix a false positive warning"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  security/device_cgroup: Fix RCU_LOCKDEP_WARN() condition

9 years agolibnvdimm: btt_devs: Fix locking in namespace_store
Axel Lin [Wed, 16 Sep 2015 13:24:47 +0000 (21:24 +0800)]
libnvdimm: btt_devs: Fix locking in namespace_store

Always take device_lock() before nvdimm_bus_lock() to prevent deadlock.

Cc: <stable@vger.kernel.org>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
9 years agoMerge tag 'kvm-arm-for-4.3-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Paolo Bonzini [Thu, 17 Sep 2015 14:51:59 +0000 (16:51 +0200)]
Merge tag 'kvm-arm-for-4.3-rc2-2' of git://git./linux/kernel/git/kvmarm/kvmarm into kvm-master

Second set of KVM/ARM changes for 4.3-rc2

- Workaround for a Cortex-A57 erratum
- Bug fix for the debugging infrastructure
- Fix for 32bit guests with more than 4GB of address space
  on a 32bit host
- A number of fixes for the (unusual) case when we don't use
  the in-kernel GIC emulation
- Removal of ThumbEE handling on arm64, since these have been
  dropped from the architecture before anyone actually ever
  built a CPU
- Remove the KVM_ARM_MAX_VCPUS limitation which has become
  fairly pointless

9 years agox86/pci/dma: Fix gfp flags for coherent DMA memory allocation
Junichi Nomura [Mon, 14 Sep 2015 07:38:36 +0000 (07:38 +0000)]
x86/pci/dma: Fix gfp flags for coherent DMA memory allocation

Commit 6894258eda2f reversed the order of gfp_flags adjustment in
dma_alloc_attrs() for x86 [arch/x86/kernel/pci-dma.c] As a result,
relevant flags set by dma_alloc_coherent_gfp_flags() are just
discarded and cause coherent DMA memory allocation failure on some
devices.

Fixes: 6894258eda2f ("dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent}")
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20150914073834.GA13077@xzibit.linux.bs1.fc.nec.co.jp
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agoarm/arm64: KVM: Remove 'config KVM_ARM_MAX_VCPUS'
Ming Lei [Wed, 2 Sep 2015 06:31:21 +0000 (14:31 +0800)]
arm/arm64: KVM: Remove 'config KVM_ARM_MAX_VCPUS'

This patch removes config option of KVM_ARM_MAX_VCPUS,
and like other ARCHs, just choose the maximum allowed
value from hardware, and follows the reasons:

1) from distribution view, the option has to be
defined as the max allowed value because it need to
meet all kinds of virtulization applications and
need to support most of SoCs;

2) using a bigger value doesn't introduce extra memory
consumption, and the help text in Kconfig isn't accurate
because kvm_vpu structure isn't allocated until request
of creating VCPU is sent from QEMU;

3) the main effect is that the field of vcpus[] in 'struct kvm'
becomes a bit bigger(sizeof(void *) per vcpu) and need more cache
lines to hold the structure, but 'struct kvm' is one generic struct,
and it has worked well on other ARCHs already in this way. Also,
the world switch frequecy is often low, for example, it is ~2000
when running kernel building load in VM from APM xgene KVM host,
so the effect is very small, and the difference can't be observed
in my test at all.

Cc: Dann Frazier <dann.frazier@canonical.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
9 years agoarm64: KVM: Remove all traces of the ThumbEE registers
Will Deacon [Tue, 15 Sep 2015 16:15:33 +0000 (17:15 +0100)]
arm64: KVM: Remove all traces of the ThumbEE registers

Although the ThumbEE registers and traps were present in earlier
versions of the v8 architecture, it was retrospectively removed and so
we can do the same.

Whilst this breaks migrating a guest started on a previous version of
the kernel, it is much better to kill these (non existent) registers
as soon as possible.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
[maz: added commend about migration]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>