linux/drivers/gpu/drm
Alex Dai 5a843307cd drm/i915/guc: Clean up locks in GuC
For now, remove the spinlocks that protected the GuC's
statistics block and work queue; they are only accessed
by code that already holds the global struct_mutex, and
so are redundant (until the big struct_mutex rewrite!).

The specific problem that the spinlocks caused was that
if the work queue was full, the driver would try to
spinwait for one jiffy, but with interrupts disabled the
jiffy count would not advance, leading to a system hang.
The issue was found using test case igt/gem_close_race.

The new version will usleep() instead, still holding
the struct_mutex but without any spinlocks.

v4: Reorganize commit message (Dave Gordon)
v3: Remove unnecessary whitespace churn
v2: Clean up wq_lock too
v1: Clean up host2guc lock as well

Signed-off-by: Alex Dai <yu.dai@intel.com>
Reviewed-by: Dave Gordon <david.s.gordon@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449104189-27591-1-git-send-email-yu.dai@intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-12-03 15:11:54 +01:00
..
amd drm/amdgpu: reserve/unreserve objects out of map/unmap operations 2015-11-18 11:41:20 -05:00
armada drm/armada: Convert the probe function to the generic drm_of_component_probe() 2015-10-20 12:01:34 +02:00
ast drm/ast: Initialized data needed to map fbdev memory 2015-11-11 12:27:31 +10:00
atmel-hlcdc drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
bochs
bridge drm/panel: Changes for v4.4-rc1 2015-11-05 11:07:13 +10:00
cirrus
exynos drm/exynos/gem: remove DMA-mapping hacks used for constructing page array 2015-11-03 11:46:39 +09:00
fsl-dcu drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
gma500 drm/irq: Use unsigned int pipe in public API 2015-10-06 12:57:47 +02:00
i2c Merge branch 'drm-tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next 2015-10-15 14:17:13 +10:00
i810
i915 drm/i915/guc: Clean up locks in GuC 2015-12-03 15:11:54 +01:00
imx imx-drm fixes and color format updates 2015-11-05 11:06:56 +10:00
mga drm/irq: Use unsigned int pipe in public API 2015-10-06 12:57:47 +02:00
mgag200 drm/mgag200: fix kernel hang in cursor code. 2015-11-19 13:20:01 +10:00
msm drm/msm: Remove local fbdev emulation Kconfig option 2015-10-22 15:46:36 -04:00
nouveau Merge branch 'akpm' (patches from Andrew) 2015-11-10 21:14:23 -08:00
omapdrm drm: Check crtc viewport correctly with rotated primary plane on atomic drivers 2015-10-19 11:00:47 +02:00
panel spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
qxl Merge tag 'topic/drm-misc-2015-10-19' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-10-20 09:01:49 +10:00
r128 drm/irq: Use unsigned int pipe in public API 2015-10-06 12:57:47 +02:00
radeon drm/radeon: fix quirk for MSI R7 370 Armor 2X 2015-11-16 11:05:54 -05:00
rcar-du drm: rcar-du: Add support for the R8A7794 DU 2015-10-21 18:52:38 +03:00
rockchip Revert "drm/rockchip: Convert the probe function to the generic drm_of_component_probe()" 2015-11-13 09:59:46 +10:00
savage
shmobile drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
sis include/uapi/drm/sis_drm.h: move sis_file_private to drivers/gpu/drm/sis/sis_drv.h 2015-10-16 11:27:46 +10:00
sti drm/sti: load HQVDP firmware the first time HQVDP's plane is used 2015-11-03 13:04:56 +01:00
tdfx
tegra Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
tilcdc drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
ttm drm/ttm: Fix memory space allocation v2 2015-09-15 00:57:01 -07:00
udl
vc4 drm/vc4: Make sure that planes aren't scaled. 2015-11-17 12:27:03 -08:00
vgem drm/vgem: Drop vgem_drm_gem_mmap 2015-10-19 11:00:44 +02:00
via via_drm.h: move struct via_file_private definition to drivers/gpu/drm/via/via_drv.h 2015-10-16 11:27:49 +10:00
virtio Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
vmwgfx Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
ati_pcigart.c
drm_agpsupport.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_atomic_helper.c drm/atomic-helper: Check encoder/crtc constraints 2015-11-19 17:11:13 +02:00
drm_atomic.c drm/atomic: add a drm_atomic_clean_old_fb helper. 2015-11-17 13:02:14 +02:00
drm_auth.c
drm_bridge.c
drm_bufs.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_cache.c
drm_context.c
drm_crtc_helper.c
drm_crtc_internal.h
drm_crtc.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c Linux 4.3-rc2 2015-09-24 17:18:41 +02:00
drm_dp_mst_topology.c drm: fix mutex leak in drm_dp_get_mst_branch_device 2015-10-22 08:29:08 +10:00
drm_drv.c drm: misc cleanup 2015-10-16 15:50:57 +02:00
drm_edid_load.c drm: Constify generic_edid_names[] 2015-09-08 13:45:52 +02:00
drm_edid.c drm/edid: Round to closest when computing the CEA/HDMI alternate clock 2015-10-20 12:01:29 +02:00
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c drm/core: Fix old_fb handling in pan_display_atomic. 2015-11-17 13:02:14 +02:00
drm_flip_work.c
drm_fops.c
drm_gem_cma_helper.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
drm_gem.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h drm: move drm_class into drm_sysfs.c 2015-09-09 15:05:17 +02:00
drm_ioc32.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_ioctl.c drm: Enforce unlocked ioctl operation for kms driver ioctls 2015-10-16 15:50:54 +02:00
drm_irq.c drm: Don't oops in drm_calc_timestamping_constants() if drm_vblank_init() wasn't called 2015-11-13 09:55:00 +10:00
drm_legacy.h
drm_lock.c signals: kill block_all_signals() and unblock_all_signals() 2015-11-06 17:50:42 -08:00
drm_memory.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_mipi_dsi.c
drm_mm.c drm/mm: Do DRM_MM_CREATE_TOP adj_start calculation after color_adjust 2015-09-08 13:45:47 +02:00
drm_modes.c
drm_modeset_lock.c drm/atomic: Make sure lock is held in trylock contexts. 2015-09-08 13:45:53 +02:00
drm_of.c drm: Introduce generic probe function for component based masters. 2015-10-20 12:01:29 +02:00
drm_panel.c
drm_pci.c drm/doc: Update docs about device instance setup 2015-09-30 10:06:06 +02:00
drm_plane_helper.c drm/atomic: Make prepare_fb/cleanup_fb only take state, v3. 2015-09-08 13:45:54 +02:00
drm_platform.c drm/doc: Update docs about device instance setup 2015-09-30 10:06:06 +02:00
drm_prime.c
drm_probe_helper.c drm: Add a non-locking version of drm_kms_helper_poll_enable(), v2 2015-09-30 16:04:08 +03:00
drm_rect.c drm: Use DRM_ROTATE_MASK and DRM_REFLECT_MASK 2015-10-05 15:32:51 +02:00
drm_scatter.c
drm_sysfs.c Merge commit '06d1ee32a4d25356a710b49d5e95dbdd68bdf505' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next 2015-10-16 10:25:28 +10:00
drm_trace_points.c
drm_trace.h
drm_vm.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_vma_manager.c drm/gem: Use kref_get_unless_zero for the weak mmap references 2015-10-19 11:00:44 +02:00
Kconfig drm/vc4: Add KMS support for Raspberry Pi. 2015-10-21 10:33:12 +01:00
Makefile Merge tag 'drm-vc4-next-2015-10-21' of http://github.com/anholt/linux into drm-next 2015-10-22 10:31:17 +10:00