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93be1bae75
linux/drivers/gpu/drm
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Chris Wilson 93be1bae75 drm/i915/execlists: Remove incorrect BUG_ON for schedule-out 
As we may unwind incomplete requests (for preemption) prior to
processing the CSB and the schedule-out events, we may update rq->engine
(resetting it to point back to the parent virtual engine) prior to
calling execlists_schedule_out(), invalidating the assertion that the
request still points to the inflight engine. (The likelihood of this is
increased if the CSB interrupt processing is pushed to the ksoftirqd for
being too slow and direct submission overtakes it.)

Tvrtko summarised it as:
"So unwind from direct submission resets rq->engine and races with
process_csb from the tasklet which notices request has actually
completed."

Reported-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Fixes: df40306902 ("drm/i915/execlists: Lift process_csb() out of the irq-off spinlock")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190907105046.19934-1-chris@chris-wilson.co.uk
(cherry picked from commit d810583fc2)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2019-10-07 10:44:46 -07:00
..
amd drm/amd/display: fix dcn21 Makefile for clang 2019-10-02 12:58:33 -05:00
arc drm/arc: Drop drm_gem_prime_export/import 2019-06-21 20:02:10 +02:00
arm Merge drm/drm-fixes into drm-misc-fixes 2019-10-03 09:59:29 +02:00
armada drm/armada: drop use of drmP.h 2019-08-14 18:31:10 +02:00
aspeed drm/aspeed: gfc_crtc: Make structure aspeed_gfx_funcs constant 2019-08-14 19:27:26 +02:00
ast drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
atmel-hlcdc Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
bochs drm/bochs: Use dev_get_drvdata 2019-08-06 09:20:58 +02:00
bridge drm fixes for 5.4-rc1 2019-09-27 11:13:35 -07:00
cirrus drm/prime: Actually remove DRIVER_PRIME everywhere 2019-06-21 17:30:32 +02:00
etnaviv drm/etnaviv: fix missing unlock on error in etnaviv_iommuv1_context_alloc() 2019-09-02 12:48:55 +02:00
exynos drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
fsl-dcu drm/fsl-dcu: fix opencoded use of drm_panel_* 2019-08-10 15:41:48 +02:00
gma500 Linux 5.2-rc5 2019-06-19 12:07:29 +02:00
hisilicon drm-misc-next for 5.4: 2019-08-27 17:21:04 +10:00
i2c drm/i2c/tda998x: drop use of drmP.h 2019-08-14 18:30:52 +02:00
i810 drm/i810: drop use of drmP.h 2019-07-17 12:52:55 +02:00
i915 drm/i915/execlists: Remove incorrect BUG_ON for schedule-out 2019-10-07 10:44:46 -07:00
imx drm/imx: IPUv3 image converter fixes and improvements 2019-08-27 16:52:12 +10:00
ingenic drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
lib
lima drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
mcde drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
mediatek drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
meson drm: meson: use match data to detect vpu compatibility 2019-08-22 17:54:05 +02:00
mga drm/mga: drop use of drmP.h 2019-06-30 09:48:05 +02:00
mgag200 drm/mgag200: Provide ddc symlink in connector sysfs directory 2019-07-31 16:33:09 +02:00
msm drm/msm: Use the correct dma_sync calls harder 2019-09-04 10:05:05 -07:00
mxsfb dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
nouveau drm fixes for 5.4-rc1 2019-09-27 11:13:35 -07:00
omapdrm Merge drm/drm-fixes into drm-misc-fixes 2019-10-03 09:59:29 +02:00
panel drm/panel: tpo-td043mtea1: remove redundant assignment 2019-08-17 16:53:55 +02:00
panfrost drm fixes for 5.4-rc1 2019-09-27 11:13:35 -07:00
pl111 drm/pl111: Support grayscale 2019-08-09 09:15:05 +02:00
qxl drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
r128 drm/r128: drop use of drmP.h 2019-07-17 12:52:55 +02:00
radeon drm fixes for 5.4-rc1 2019-09-27 11:13:35 -07:00
rcar-du Merge drm/drm-fixes into drm-misc-fixes 2019-10-03 09:59:29 +02:00
rockchip drm fixes for 5.4-rc1 2019-09-27 11:13:35 -07:00
savage
scheduler drm/scheduler: use job count instead of peek 2019-08-15 10:52:10 -05:00
selftests drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
shmobile drm/shmobile: drop use of drmP.h 2019-07-15 18:11:31 +02:00
sis
sti drm/sti: fix opencoded use of drm_panel_* 2019-08-07 13:54:17 +02:00
stm drm/stm: attach gem fence to atomic state 2019-07-25 12:00:09 +02:00
sun4i drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
tdfx drm/tdfx: drop use of drmP.h 2019-07-17 12:52:55 +02:00
tegra drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
tilcdc drm/tilcdc: include linux/pinctrl/consumer.h again 2019-09-30 19:24:47 +03:00
tiny drm: gm12u320: Add -ENODEV to list of errors to ignore 2019-08-12 21:30:21 +02:00
ttm drm-misc-next for 5.4: 2019-08-21 16:44:41 +10:00
tve200 drm/tve200: drop use of drmP.h 2019-07-15 18:11:30 +02:00
udl drm/udl: drop use of drmP.h 2019-07-17 12:52:55 +02:00
v3d dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
vboxvideo drm/vboxvideo: Make structure vbox_fb_helper_funcs constant 2019-08-18 12:52:52 +02:00
vc4 Merge drm/drm-fixes into drm-misc-fixes 2019-10-03 09:59:29 +02:00
vgem dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
via drivers/gpu/drm/via: convert put_page() to put_user_page*() 2019-09-24 15:54:08 -07:00
virtio drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
vkms drm/vkms: drop use of drmP.h 2019-07-15 18:11:30 +02:00
vmwgfx drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
xen drm/xen-front: Make structure fb_funcs constant 2019-08-19 08:32:52 +03:00
zte Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
ati_pcigart.c drm/ati_pcigart: drop dependency on drm_os_linux.h 2019-07-19 23:24:16 +02:00
drm_agpsupport.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_atomic_helper.c drm: Measure Self Refresh Entry/Exit times to avoid thrashing 2019-09-19 10:03:32 -04:00
drm_atomic_state_helper.c drm/atomic: Rename crtc_state->pageflip_flags to async_flip 2019-09-18 18:43:36 +02:00
drm_atomic_uapi.c drm/atomic: Reject FLIP_ASYNC unconditionally 2019-09-18 18:42:57 +02:00
drm_atomic.c drm: Free the writeback_job when it with an empty fb 2019-09-23 15:31:53 +08:00
drm_auth.c
drm_blend.c
drm_bridge.c drm: Add atomic variants for bridge enable/disable 2019-06-13 13:00:29 -04:00
drm_bufs.c drm main pull request for v5.3-rc1 (sans mm changes) 2019-07-15 19:04:27 -07:00
drm_cache.c
drm_client_modeset.c drm/modes: Don't apply cmdline's rotation if it wasn't specified 2019-07-16 10:34:38 +02:00
drm_client.c drm/fb-helper: Map DRM client buffer only when required 2019-08-01 15:01:29 +02:00
drm_color_mgmt.c
drm_connector.c drm: Fix kerneldoc warns in connector-related docs 2019-08-12 10:16:39 -04:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c drm: Remove bridge support from legacy helpers 2019-08-16 15:50:27 +03:00
drm_crtc_internal.h
drm_crtc.c drm: no need to check return value of debugfs_create functions 2019-06-13 16:39:16 +02:00
drm_damage_helper.c
drm_debugfs_crc.c drm/crc-debugfs: Add notes about CRC<->commit interactions 2019-08-06 18:27:53 +01:00
drm_debugfs.c drm: debugfs: make drm_debugfs_create_files() never fail 2019-06-14 16:59:51 +02:00
drm_dma.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_dp_aux_dev.c drm/dp_mst: Enable registration of AUX devices for MST ports 2019-07-25 16:39:35 -04:00
drm_dp_cec.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm: Make the bw/link rate calculations more forgiving 2019-07-17 12:45:30 -04:00
drm_dp_mst_topology.c drm/mst: Fix sphinx warnings in drm_dp_msg_connector register functions 2019-07-26 14:48:03 -04:00
drm_drv.c drm/kms: Duct-tape for mode object lifetime checks 2019-09-18 11:27:18 +02:00
drm_dsc.c
drm_dumb_buffers.c Revert "drm/gem: Rename drm_gem_dumb_map_offset() to drm_gem_map_offset()" 2019-08-07 11:56:48 -04:00
drm_edid_load.c
drm_edid.c drm/edid: use for_each_displayid_db where applicable 2019-06-25 14:44:03 +10:00
drm_encoder_slave.c
drm_encoder.c
drm_fb_cma_helper.c
drm_fb_helper.c drm/fb-helper: Instanciate shadow FB if configured in device's mode_config 2019-08-01 15:01:35 +02:00
drm_file.c drm/prime: Unconditionally set up the prime file private 2019-06-21 11:48:09 +02:00
drm_flip_work.c
drm_format_helper.c
drm_fourcc.c
drm_framebuffer.c drm: silence variable 'conn' set but not used 2019-07-22 16:04:53 -04:00
drm_gem_cma_helper.c Linux 5.2-rc5 2019-06-19 12:07:29 +02:00
drm_gem_framebuffer_helper.c dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
drm_gem_shmem_helper.c drm/shmem: Use mutex_trylock in drm_gem_shmem_purge 2019-08-28 10:02:39 -05:00
drm_gem_vram_helper.c drm/ttm: use gem vma_node 2019-08-06 08:21:54 +02:00
drm_gem.c dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
drm_hashtab.c
drm_hdcp.c drm/hdcp: reference for srm file format 2019-08-06 13:18:42 +05:30
drm_internal.h drm/gem: Unexport drm_gem_(un)pin/v(un)map 2019-06-17 17:37:01 +02:00
drm_ioc32.c Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
drm_ioctl.c drm/atomic: Take the atomic toys away from X 2019-09-18 18:42:21 +02:00
drm_irq.c
drm_kms_helper_common.c drm: fix module name in edid_firmware log message 2019-08-22 10:41:06 +03:00
drm_lease.c Linux 5.2-rc5 2019-06-19 12:07:29 +02:00
drm_legacy_misc.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_legacy.h
drm_lock.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_memory.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_mipi_dbi.c drm/tinydrm: Move mipi-dbi 2019-07-25 10:45:07 +02:00
drm_mipi_dsi.c drivers: Introduce device lookup variants by of_node 2019-07-30 13:07:41 +02:00
drm_mm.c drm: Allow range of 0 for drm_mm_insert_node_in_range() 2019-06-26 21:13:12 +01:00
drm_mode_config.c
drm_mode_object.c drm/kms: Duct-tape for mode object lifetime checks 2019-09-18 11:27:18 +02:00
drm_modes.c drm main pull for 5.4-rc1 2019-09-19 16:24:24 -07:00
drm_modeset_helper.c
drm_modeset_lock.c docs conversion for v5.3-rc1 2019-07-16 12:21:41 -07:00
drm_of.c
drm_panel_orientation_quirks.c drm: panel-orientation-quirks: Add extra quirk table entry for GPD MicroPC 2019-07-01 16:58:09 +02:00
drm_panel.c drm/panel: drop return code from drm_panel_detach() 2019-08-10 15:41:48 +02:00
drm_pci.c
drm_plane_helper.c
drm_plane.c
drm_prime.c drm/prime: Ditch gem_prime_res_obj hook 2019-07-31 10:19:23 +02:00
drm_print.c
drm_probe_helper.c Linux 5.2-rc5 2019-06-19 12:07:29 +02:00
drm_property.c
drm_rect.c
drm_scatter.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_scdc_helper.c
drm_self_refresh_helper.c drm: Measure Self Refresh Entry/Exit times to avoid thrashing 2019-09-19 10:03:32 -04:00
drm_simple_kms_helper.c Linux 5.2-rc5 2019-06-19 12:07:29 +02:00
drm_syncobj.c drm/syncobj: Add better overview documentation for syncobj (v2) 2019-08-12 16:58:52 +02:00
drm_sysfs.c drm: uevent for connector status change 2019-08-06 13:16:54 +05:30
drm_trace_points.c
drm_trace.h
drm_vblank.c drm/vblank: drop use of DRM_WAIT_ON() 2019-08-03 16:07:39 +02:00
drm_vm.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_vma_manager.c
drm_vram_helper_common.c
drm_vram_mm_helper.c
drm_writeback.c drm: Clear the fence pointer when writeback job signaled 2019-09-23 15:32:53 +08:00
Kconfig drm-misc-next for 5.4: 2019-08-09 16:04:31 +10:00
Makefile drm/amd: remove meaningless descending into amd/amdkfd/ 2019-08-27 10:09:12 -05:00