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linux-hardened/drivers/gpu/drm
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Paulo Zanoni 0dd81544c9 drm/i915/fbc: don't use the frontbuffer tracking subsystem for flips 
Before this patch, page flips would call intel_frontbuffer_flip() and
intel_frontbuffer_flip_complete(), which would call intel_fbc_flush(),
which would call intel_fbc_update(). The problem is that drawing
operations also trigger intel_fbc_flush() calls, so it's not
guaranteed that we have the CRTC and FB locks grabbed when
intel_fbc_flush() happens, since the call trace may come from the
rendering path.

We're trying to make the FBC code grab the appropriate CRTC/FB locks,
so split the drawing and the flipping logic in order to achieve that
in later patches. So now the frontbuffer tracking code is just going
to be used for frontbuffer drawing, and intel_fbc_update() is going to
be used directly for actual page flips.

As a note, we don't need to call intel_fbc_flip() during the two
places where we call intel_frontbuffer_flip() since in one of them we
already have an intel_fbc_update() call, and in the other we have the
planes disabled.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453210558-7875-7-git-send-email-paulo.r.zanoni@intel.com
2016-01-29 18:10:20 -02:00
..
amd drm/amdgpu: add missing irq.h include 2016-01-14 08:07:55 +10:00
armada Merge branch 'drm-armada-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next 2015-12-23 09:19:58 +10:00
ast drm: Pass 'name' to drm_encoder_init() 2015-12-11 09:13:20 +01:00
atmel-hlcdc drm: use dev_name as default unique name in drm_dev_alloc() 2015-12-15 13:56:06 +01:00
bochs drm/bochs: Constify function pointer structs 2015-12-15 13:42:36 +01:00
bridge Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
cirrus drm/cirrus: Constify function pointer structs 2015-12-15 13:43:59 +01:00
etnaviv drm/etnaviv: fix workaround for GC500 2016-01-07 11:57:57 +01:00
exynos drm/exynos: fix kernel panic issue at drm releasing 2016-01-13 00:16:39 +09:00
fsl-dcu drm: use dev_name as default unique name in drm_dev_alloc() 2015-12-15 13:56:06 +01:00
gma500 drm/gma500: use to_pci_dev() 2016-01-04 07:57:38 +01:00
i2c Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
i810
i915 drm/i915/fbc: don't use the frontbuffer tracking subsystem for flips 2016-01-29 18:10:20 -02:00
imx drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
mga
mgag200 drm/mgag200: Constify function pointer structs 2015-12-15 13:46:35 +01:00
msm Merge tag 'topic/drm-misc-2015-12-14' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-12-15 10:40:15 +10:00
nouveau drm: nouveau: fix nouveau_debugfs_init prototype 2016-01-14 07:56:41 +10:00
omapdrm drm/omap: remove obsolete manager assignment 2015-12-31 11:25:48 +02:00
panel drm/panel: simple: Add QiaoDian qd43003c0-40 2015-12-16 18:15:26 +01:00
qxl drm/qxl: use to_qxl_bo macro 2015-12-15 13:39:40 +01:00
r128
radeon Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
rcar-du drm: Constify drm_encoder_slave_funcs 2015-12-15 13:41:17 +01:00
rockchip drm: rockchip: Support Synopsys DW MIPI DSI 2016-01-06 16:16:39 +08:00
savage
shmobile drm: Do not set connector->encoder in drivers 2016-01-13 13:30:53 +01:00
sis
sti drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
tdfx
tegra Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
tilcdc drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
ttm drm/ttm: add ttm_bo_move_to_lru_tail function v2 2016-01-13 12:21:21 -05:00
udl drm/udl: Constify function pointer structs 2015-12-15 13:48:54 +01:00
vc4 Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
vgem
via
virtio drm: Drop drm_helper_probe_single_connector_modes_nomerge() 2015-12-11 09:32:53 +01:00
vmwgfx drm/vmwgfx: Fix a width / pitch mismatch on framebuffer updates 2016-01-14 07:56:46 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic.c drm/atomic: Remove drm_atomic_connectors_for_crtc. 2016-01-06 16:37:39 +01:00
drm_atomic_helper.c drm/atomic: Remove drm_atomic_connectors_for_crtc. 2016-01-06 16:37:39 +01:00
drm_auth.c
drm_bridge.c drm/bridge: Improve kerneldoc 2015-12-08 16:07:53 +01:00
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc.c drm: Do not set connector->encoder in drivers 2016-01-13 13:30:53 +01:00
drm_crtc_helper.c drm: Add crtc->name and use it in debug messages 2015-12-11 09:13:48 +01:00
drm_crtc_internal.h
drm_debugfs.c
drm_dma.c
drm_dp_helper.c
drm_dp_mst_topology.c drm/dp/mst: fix in RAD element access 2016-01-04 12:11:20 -05:00
drm_drv.c drm: move MODULE_PARM_DESC to other file 2016-01-08 15:32:29 +01:00
drm_edid.c drm/edid: index CEA/HDMI mode tables using the VIC 2016-01-08 15:30:28 +01:00
drm_edid_load.c
drm_encoder_slave.c drm: Constify drm_encoder_slave_funcs 2015-12-15 13:41:17 +01:00
drm_fb_cma_helper.c drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
drm_fb_helper.c drm/fb-helper: Use proper plane mask for fb cleanup 2015-12-21 09:54:49 +01:00
drm_flip_work.c
drm_fops.c Linux 4.4-rc4 2015-12-08 11:04:26 +10:00
drm_gem.c drm: Remove opencoded drm_gem_object_release_handle() 2016-01-05 16:23:09 +01:00
drm_gem_cma_helper.c drm: Use the driver's gem_object_free function from CMA helpers. 2015-12-15 10:23:44 +01:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c
drm_irq.c drm: move MODULE_PARM_DESC to other file 2016-01-08 15:32:29 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c
drm_mm.c
drm_modes.c drm/doc: Convert to markdown 2015-12-15 10:22:26 +01:00
drm_modeset_lock.c drm/doc: Convert to markdown 2015-12-15 10:22:26 +01:00
drm_of.c
drm_panel.c
drm_pci.c drm: add drm_pcie_get_max_link_width helper (v2) 2015-12-21 16:42:31 -05:00
drm_plane_helper.c drm: Pass 'name' to drm_universal_plane_init() 2015-12-11 09:13:10 +01:00
drm_platform.c
drm_prime.c drm/doc: Convert to markdown 2015-12-15 10:22:26 +01:00
drm_probe_helper.c drm: Don't overwrite UNVERFIED mode status to OK 2015-12-15 11:00:10 +10:00
drm_rect.c
drm_scatter.c
drm_sysfs.c drm/sysfs: use kobj_to_dev() 2016-01-13 16:43:07 +01:00
drm_trace.h
drm_trace_points.c
drm_vm.c
drm_vma_manager.c
Kconfig Merge branch 'drm-next-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-next 2015-12-23 14:15:26 +10:00
Makefile drm/etnaviv: add initial etnaviv DRM driver 2015-12-15 14:48:02 +01:00