Dmitry Osipenko 9630b585b6 drm/msm/gem: Prevent blocking within shrinker loop ... Consider this scenario: 1. APP1 continuously creates lots of small GEMs 2. APP2 triggers `drop_caches` 3. Shrinker starts to evict APP1 GEMs, while APP1 produces new purgeable GEMs 4. msm_gem_shrinker_scan() returns non-zero number of freed pages and causes shrinker to try shrink more 5. msm_gem_shrinker_scan() returns non-zero number of freed pages again, goto 4 6. The APP2 is blocked in `drop_caches` until APP1 stops producing purgeable GEMs To prevent this blocking scenario, check number of remaining pages that GPU shrinker couldn't release due to a GEM locking contention or shrinking rejection. If there are no remaining pages left to shrink, then there is no need to free up more pages and shrinker may break out from the loop. This problem was found during shrinker/madvise IOCTL testing of virtio-gpu driver. The MSM driver is affected in the same way. Reviewed-by: Rob Clark <robdclark@gmail.com> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: b352ba54a8 ("drm/msm/gem: Convert to using drm_gem_lru") Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Link: https://lore.kernel.org/all/20230108210445.3948344-2-dmitry.osipenko@collabora.com/		2023-02-27 07:06:56 +03:00
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bridge	drm: bridge: dw_hdmi: Audio: Add General Parallel Audio (GPA) driver	2022-04-19 18:23:48 +02:00
display	Merge tag 'amd-drm-next-6.1-2022-09-08' of https://gitlab.freedesktop.org/agd5f/linux into drm-next	2022-09-12 19:17:41 +10:00
i2c
ttm	drm/ttm: fix undefined behavior in bit shift for TTM_TT_FLAG_PRIV_POPULATED	2022-11-02 10:23:07 +01:00
amd_asic_type.h	drm/amdgpu: add new asic_type for IP discovery	2021-10-04 15:23:01 -04:00
drm_accel.h	accel: add dedicated minor for accelerator devices	2022-11-22 13:14:44 +02:00
drm_aperture.h	drm/aperture: Pass DRM driver structure instead of driver name	2021-07-01 11:11:55 +02:00
drm_atomic_helper.h	drm/atomic-helper: Replace drm_atomic_helper_check_crtc_state()	2022-10-08 15:26:55 +02:00
drm_atomic_state_helper.h	drm/atomic-helper: Rename drm_atomic_helper_connector_tv_reset to avoid ambiguity	2022-10-10 13:55:47 +02:00
drm_atomic_uapi.h	drm: handle kernel fences in drm_gem_plane_helper_prepare_fb v2	2022-05-02 09:01:51 +02:00
drm_atomic.h	drm/atomic: fix warning of unused variable	2022-06-09 16:09:46 +02:00
drm_audio_component.h	ALSA: hda/i915 - fix list corruption with concurrent probes	2020-10-09 16:46:04 +02:00
drm_auth.h	drm: clarify usage of drm leases	2021-07-29 09:12:01 +02:00
drm_blend.h
drm_bridge_connector.h
drm_bridge.h	drm/vc4: Add explicit declaration of 'drmm_of_get_bridge'	2022-07-21 12:15:56 +02:00
drm_buddy.h	drm/selftests: add drm buddy alloc range testcase	2022-02-23 10:44:43 +01:00
drm_cache.h	LoongArch: Add writecombine support for drm	2022-06-03 20:09:27 +08:00
drm_client.h	drm/client: fix circular reference counting issue	2023-02-07 09:42:56 +01:00
drm_color_mgmt.h
drm_connector.h	drm-misc-next for 6.2:	2022-11-22 09:21:17 +10:00
drm_crtc_helper.h	drm/crtc-helper: Add a drm_crtc_helper_atomic_check() helper	2022-10-13 09:17:05 +02:00
drm_crtc.h	drm/crtc: Introduce drmm_crtc_init_with_planes	2022-07-13 10:46:05 +02:00
drm_damage_helper.h	drm/plane: Move drm_plane_enable_fb_damage_clips into core	2021-07-27 12:21:22 +02:00
drm_debugfs_crc.h
drm_debugfs.h
drm_device.h	accel: add dedicated minor for accelerator devices	2022-11-22 13:14:44 +02:00
drm_displayid.h	drm/displayid: convert to drm_edid	2022-05-13 18:55:13 +03:00
drm_drv.h	accel: add dedicated minor for accelerator devices	2022-11-22 13:14:44 +02:00
drm_edid.h	drm/edid: move edid load declarations to internal header	2022-10-26 09:53:56 +03:00
drm_encoder_slave.h	drm: Remove linux/i2c.h from drm_crtc.h	2022-07-05 21:15:23 +03:00
drm_encoder.h	drm/encoder: Introduce drmm_encoder_init	2022-07-13 10:46:05 +02:00
drm_fb_dma_helper.h	drm/gem: rename GEM CMA helpers to GEM DMA helpers	2022-08-03 18:31:49 +02:00
drm_fb_helper.h	drm/fb-helper: Use a per-driver FB deferred I/O handler	2023-01-24 11:13:08 +01:00
drm_fbdev_generic.h	drm/fb-helper: Move generic fbdev emulation into separate source file	2022-11-05 17:12:04 +01:00
drm_file.h	accel: add dedicated minor for accelerator devices	2022-11-22 13:14:44 +02:00
drm_fixed.h
drm_flip_work.h
drm_format_helper.h	drm/format-helper: Add drm_fb_build_fourcc_list() helper	2022-09-12 09:15:49 +02:00
drm_fourcc.h	drm/fourcc: Add drm_format_info.is_color_indexed flag	2022-07-09 15:00:08 +02:00
drm_framebuffer.h	drm/fb: Improve drm_framebuffer.offsets documentation	2022-07-09 15:58:52 +02:00
drm_gem_atomic_helper.h	drm/gem: Implement shadow-plane {begin, end}_fb_access with vmap	2022-11-08 17:10:41 +01:00
drm_gem_dma_helper.h	drm/gem: rename struct drm_gem_dma_object.{paddr => dma_addr}	2022-08-03 18:32:27 +02:00
drm_gem_framebuffer_helper.h	drm/gem: Ignore color planes that are unused by framebuffer format	2022-05-19 19:25:02 +02:00
drm_gem_shmem_helper.h	drm: correct comments	2022-07-21 12:16:10 +02:00
drm_gem_ttm_helper.h	dma-buf-map: Rename to iosys-map	2022-02-07 16:35:35 -08:00
drm_gem_vram_helper.h	dma-buf-map: Rename to iosys-map	2022-02-07 16:35:35 -08:00
drm_gem.h	drm/msm/gem: Prevent blocking within shrinker loop	2023-02-27 07:06:56 +03:00
drm_ioctl.h	drm: unexport drm_ioctl_permit	2021-08-13 17:50:48 +02:00
drm_lease.h
drm_legacy.h	drm: Declare hashtable as legacy	2021-11-30 09:41:28 +01:00
drm_managed.h	drm: Add DRM-managed mutex_init()	2022-05-05 09:04:10 +02:00
drm_mipi_dbi.h	drm/probe-helper: Add drm_crtc_helper_mode_valid_fixed()	2022-09-12 09:14:26 +02:00
drm_mipi_dsi.h	Merge tag 'drm-msm-next-2022-09-22' of https://gitlab.freedesktop.org/drm/msm into drm-next	2022-09-28 11:35:25 +10:00
drm_mm.h	drm: Replace kernel.h with the necessary inclusions	2021-12-09 13:46:13 +01:00
drm_mode_config.h	drm: Remove drm_mode_config::fb_base	2022-10-19 21:46:16 -04:00
drm_mode_object.h	drm/object: Add drm_object_property_get_default_value() function	2022-02-25 17:55:42 +01:00
drm_modes.h	drm/modes: Add initializer macro DRM_MODE_INIT()	2022-09-12 09:14:59 +02:00
drm_modeset_helper_vtables.h	drm/atomic-helper: Add {begin,end}_fb_access to plane helpers	2022-11-08 17:10:27 +01:00
drm_modeset_helper.h
drm_modeset_lock.h	drm/locking: fix drm_modeset_acquire_ctx kernel-doc	2022-01-20 14:41:25 +02:00
drm_module.h	drm: Provide platform module-init macro	2022-01-19 18:40:18 +01:00
drm_of.h	drm: of: Mark empty drm_of_get_data_lanes_count and drm_of_get_data_lanes_ep static	2022-06-12 16:07:05 +02:00
drm_panel.h	drm/panel: drop DSC pps pointer	2022-09-18 09:38:06 -07:00
drm_pciids.h
drm_plane_helper.h	drm/plane-helper: Add the missing declaration of drm_atomic_state	2022-12-16 10:23:11 +01:00
drm_plane.h	drm/plane: Allocate planes with drm_universal_plane_alloc()	2022-09-20 09:41:06 +02:00
drm_prime.h	dma-buf-map: Rename to iosys-map	2022-02-07 16:35:35 -08:00
drm_print.h	drm_print: add _ddebug descriptor to drm_*dbg prototypes	2022-09-24 15:02:02 +02:00
drm_privacy_screen_consumer.h	drm/privacy-screen: Add notifier support (v2)	2021-10-14 13:12:25 +02:00
drm_privacy_screen_driver.h	drm/privacy_screen: Add drvdata in drm_privacy_screen	2022-01-10 12:17:37 +01:00
drm_privacy_screen_machine.h	drm/privacy-screen: Add X86 specific arch init code	2021-10-14 13:12:24 +02:00
drm_probe_helper.h	drm/probe-helper: Add drm_crtc_helper_mode_valid_fixed()	2022-09-12 09:14:26 +02:00
drm_property.h	drm: document drm_property_enum.value for bitfields	2021-07-26 10:08:22 +02:00
drm_rect.h	drm/rect: Add DRM_RECT_INIT() macro	2022-06-27 13:45:48 +02:00
drm_self_refresh_helper.h
drm_simple_kms_helper.h	drm/atomic-helper: Add {begin,end}_fb_access to plane helpers	2022-11-08 17:10:27 +01:00
drm_syncobj.h
drm_sysfs.h	drm/sysfs: introduce drm_sysfs_connector_hotplug_event	2021-11-02 14:27:06 +01:00
drm_util.h
drm_utils.h
drm_vblank_work.h
drm_vblank.h	drm/vblank: Document drm_crtc_vblank_restore constraints	2021-02-10 12:38:55 +01:00
drm_vma_manager.h	drm/drm_vma_manager: Add drm_vma_node_allow_once()	2023-01-19 14:16:55 +01:00
drm_writeback.h	drm: introduce drm_writeback_connector_init_with_encoder() API	2022-05-02 02:12:59 +03:00
gma_drm.h
gpu_scheduler.h	Merge tag 'amd-drm-next-6.2-2022-11-18' of https://gitlab.freedesktop.org/agd5f/linux into drm-next	2022-11-22 13:41:11 +10:00
gud.h	drm/gud: Add GUD_PIXEL_FORMAT_RGB888	2021-10-04 12:06:14 +02:00
i915_component.h	drm/i915/pxp: Define PXP component interface	2021-10-04 13:09:53 -04:00
i915_drm.h	drm/i915: include uapi/drm/i915_drm.h directly where needed	2022-03-17 20:06:04 +02:00
i915_mei_hdcp_interface.h	drm/display: Move HDCP helpers into display-helper module	2022-04-25 11:19:36 +02:00
i915_pciids.h	drm/i915: Add new ADL-S pci id	2022-08-26 05:46:23 -07:00
i915_pxp_tee_interface.h	mei: pxp: add command streamer API to the PXP driver	2022-10-03 11:29:11 -07:00
intel_lpe_audio.h
intel-gtt.h	agp/intel: Rename intel-gtt symbols	2022-06-22 15:52:55 -07:00
spsc_queue.h
task_barrier.h