Jordan Crouse 4c7085a5d5 drm/msm: Shadow current pointer in the ring until command is complete ... Add a shadow pointer to track the current command being written into the ring. Don't commit it as 'cur' until the command is submitted. Because 'cur' is used to construct the software copy of the wptr this ensures that somebody peeking in on the ring doesn't assume that a command is inflight while it is being written. This isn't a huge deal with a single ring (though technically the hangcheck could assume the system is prematurely busy when it isn't) but it will be rather important for preemption where the decision to preempt is based on a non-empty ringbuffer. Without a shadow an aggressive preemption scheme could assume that the ringbuffer is non empty and switch to it before the CPU is done writing the command and boom. Even though preemption won't be supported for all targets because of the way the code is organized it is simpler to make this generic for all targets. The extra load for non-preemption targets should be minimal. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>		2017-10-28 11:01:37 -04:00
..
amd	Merge tag 'drm-amdkfd-next-2017-10-18' of git://people.freedesktop.org/~gabbayo/linux into drm-next	2017-10-20 15:54:44 +10:00
arc
arm
armada	drm/armada: Replace drm_framebuffer_reference/unreference() with _get/put()	2017-10-16 15:02:44 -04:00
ast	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
atmel-hlcdc
bochs	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
bridge	drm/bridge: adv7511: Fix a use after free	2017-10-18 09:38:43 +05:30
cirrus	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
etnaviv	drm/etnaviv: short-circuit perfmon ioctls	2017-10-22 18:41:56 +02:00
exynos
fsl-dcu
gma500	drm/gma500: use ARRAY_SIZE	2017-10-16 11:29:05 +02:00
hisilicon	Merge tag 'drm-misc-next-2017-10-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next	2017-10-17 10:10:17 +10:00
i2c
i810
i915	Merge tag 'drm-intel-next-2017-10-12' of git://anongit.freedesktop.org/drm/drm-intel into drm-next	2017-10-20 10:56:10 +10:00
imx
lib
mediatek
meson
mga
mgag200	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
msm	drm/msm: Shadow current pointer in the ring until command is complete	2017-10-28 11:01:37 -04:00
mxsfb
nouveau	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
omapdrm	omapdrm: omapdss_hdmi_ops: add lost_hotplug op	2017-10-12 10:49:14 +03:00
panel	drm/panel: simple: add Toshiba LT089AC19000	2017-10-19 11:48:44 +02:00
pl111
qxl
r128
radeon	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
rcar-du
rockchip	drm/rockchip: add PINCTRL dependency for LVDS	2017-10-13 09:43:16 +08:00
savage
selftests
shmobile
sis
sti
stm	drm/stm: ltdc: remove bridge from driver internal structure	2017-10-10 11:32:48 +02:00
sun4i	drm/sun4i: Add support for A20 display pipeline components	2017-10-17 19:49:17 +02:00
tdfx
tegra	drm/tegra: hdmi: Add cec-notifier support	2017-10-20 14:19:54 +02:00
tilcdc	tilcdc changes for v4.15	2017-10-17 10:13:47 +10:00
tinydrm	drm/tinydrm: Remove explicit .best_encoder assignment	2017-10-13 17:34:51 +02:00
ttm	drm/ttm: fix the fix for huge compound pages	2017-10-19 15:27:10 -04:00
tve200
udl	Merge tag 'drm-misc-next-2017-10-20' of git://anongit.freedesktop.org/drm/drm-misc into drm-next	2017-10-24 16:51:05 +10:00
vc4	drm/vc4: Fix sleeps during the IRQ handler for DSI transactions.	2017-10-19 13:20:09 -07:00
vgem
via	drm/via: use ARRAY_SIZE	2017-10-16 11:29:28 +02:00
virtio
vmwgfx	drm: Reorganize drm_pending_event to support future event types [v2]	2017-10-21 07:23:40 +10:00
zte
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c	Merge tag 'drm-misc-next-2017-10-20' of git://anongit.freedesktop.org/drm/drm-misc into drm-next	2017-10-24 16:51:05 +10:00
drm_atomic.c	drm: Reorganize drm_pending_event to support future event types [v2]	2017-10-21 07:23:40 +10:00
drm_auth.c	drm: Check mode object lease status in all master ioctl paths [v4]	2017-10-25 16:31:30 +10:00
drm_blend.c
drm_bridge.c
drm_bufs.c
drm_cache.c
drm_color_mgmt.c	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
drm_connector.c	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c	drm: Replace kzalloc with kcalloc	2017-10-13 15:49:03 -04:00
drm_crtc_internal.h	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
drm_crtc.c	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
drm_debugfs_crc.c
drm_debugfs.c
drm_dma.c
drm_dp_aux_dev.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c	drm/dp: WARN about invalid/unknown link rates and bw codes	2017-10-11 18:41:44 +03:00
drm_dp_mst_topology.c
drm_drv.c	drm: Add new LEASE debug level	2017-10-25 16:31:29 +10:00
drm_dumb_buffers.c
drm_edid_load.c
drm_edid.c
drm_encoder_slave.c
drm_encoder.c	drm: Check mode object lease status in all master ioctl paths [v4]	2017-10-25 16:31:30 +10:00
drm_fb_cma_helper.c
drm_fb_helper.c	drm: Replace kzalloc with kcalloc	2017-10-13 15:49:03 -04:00
drm_file.c
drm_flip_work.c
drm_fourcc.c
drm_framebuffer.c	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
drm_gem_cma_helper.c	drm/gem-cma-helper: Change the level of the allocation failure message	2017-10-16 15:19:57 +02:00
drm_gem_framebuffer_helper.c	drm/gem-fb-helper: Improve documentation	2017-10-08 15:02:51 +02:00
drm_gem.c
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h	drm: Add CRTC_GET_SEQUENCE and CRTC_QUEUE_SEQUENCE ioctls [v3]	2017-10-23 11:15:03 +10:00
drm_ioc32.c
drm_ioctl.c	drm: Add four ioctls for managing drm mode object leases [v7]	2017-10-25 16:31:30 +10:00
drm_irq.c
drm_kms_helper_common.c
drm_lease.c	drm: Add four ioctls for managing drm mode object leases [v7]	2017-10-25 16:31:30 +10:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c
drm_mm.c
drm_mode_config.c	drm: Check mode object lease status in all master ioctl paths [v4]	2017-10-25 16:31:30 +10:00
drm_mode_object.c	drm: Add four ioctls for managing drm mode object leases [v7]	2017-10-25 16:31:30 +10:00
drm_modes.c
drm_modeset_helper.c
drm_modeset_lock.c
drm_of.c	drm/drm_of: Move drm_of_panel_bridge_remove_function into header.	2017-10-13 16:59:36 +02:00
drm_panel.c
drm_pci.c
drm_plane_helper.c	drm: Replace kzalloc with kcalloc	2017-10-13 15:49:03 -04:00
drm_plane.c	drm: Check mode object lease status in all master ioctl paths [v4]	2017-10-25 16:31:30 +10:00
drm_prime.c
drm_print.c
drm_probe_helper.c	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
drm_property.c	drm: Pass struct drm_file * to __drm_mode_object_find [v2]	2017-10-12 10:03:04 +10:00
drm_rect.c
drm_scatter.c
drm_scdc_helper.c
drm_simple_kms_helper.c
drm_syncobj.c	Merge tag 'drm-misc-next-2017-10-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next	2017-10-17 10:10:17 +10:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vblank.c	drm: Check mode object lease status in all master ioctl paths [v4]	2017-10-25 16:31:30 +10:00
drm_vm.c
drm_vma_manager.c
Kconfig
Makefile	drm: Add drm_object lease infrastructure [v5]	2017-10-25 16:31:29 +10:00