linux/drivers/gpu/drm
Chris Wilson 9b2c0b7fb4 drm: Serialise multiple event readers
The previous patch reintroduced a race condition whereby a failure in
one reader may allow a second reader to see out-of-order events.
Introduce a mutex to serialise readers so that an event is completed in
its entirety before another reader may process an event. The two readers
may race against each other, but the events each retrieves are in the
correct order.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448462343-2072-2-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-11-26 15:21:27 +01:00
..
amd drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
armada drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
ast drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
atmel-hlcdc drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
bochs drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
bridge drm/panel: Changes for v4.4-rc1 2015-11-05 11:07:13 +10:00
cirrus drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
exynos drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
fsl-dcu drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
gma500 drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
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: fix potential dangling else problems in for_each_ macros 2015-11-25 09:29:32 +01:00
imx drm/imx: Remove local fbdev emulation Kconfig option 2015-11-24 11:41:50 +01:00
mga drm/irq: Use unsigned int pipe in public API 2015-10-06 12:57:47 +02:00
mgag200 drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
msm drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
nouveau drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
omapdrm drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
panel spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
qxl drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
r128 drm/irq: Use unsigned int pipe in public API 2015-10-06 12:57:47 +02:00
radeon drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
rcar-du drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
rockchip drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
savage
shmobile drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
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 drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
tilcdc drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
ttm drm/ttm: Fix memory space allocation v2 2015-09-15 00:57:01 -07:00
udl drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
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 drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
vmwgfx drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
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
ati_pcigart.c
drm_agpsupport.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_atomic.c drm/atomic: Small documentation fix. 2015-11-24 11:48:36 +01:00
drm_atomic_helper.c drm: Keep coordinates in the typical x, y, w, h order instead of x, y, h, w 2015-11-24 11:47:46 +01:00
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.c drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
drm_crtc_helper.c drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
drm_crtc_internal.h
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.c drm/edid: Round to closest when computing the CEA/HDMI alternate clock 2015-10-20 12:01:29 +02:00
drm_edid_load.c drm: Constify generic_edid_names[] 2015-09-08 13:45:52 +02:00
drm_encoder_slave.c
drm_fb_cma_helper.c drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create() 2015-11-24 11:47:38 +01:00
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: Serialise multiple event readers 2015-11-26 15:21:27 +01:00
drm_gem.c drm/gem: Update/Polish docs 2015-11-24 11:41:49 +01:00
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_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: modes: replace simple_strtoul by kstrtouint 2015-11-24 11:41:53 +01:00
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: Print the src/dst/clip rectangles in error in drm_plane_helper 2015-11-24 11:47:47 +01:00
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/sysfs: Send out uevent when connector->force changes 2015-11-24 11:49:34 +01:00
drm_rect.c drm: Add "prefix" parameter to drm_rect_debug_print() 2015-11-24 11:47:46 +01:00
drm_scatter.c
drm_sysfs.c drm/sysfs: Send out uevent when connector->force changes 2015-11-24 11:49:34 +01:00
drm_trace.h
drm_trace_points.c
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