Chris Wilson d8af05ff38 drm/i915: Allow sharing the idle-barrier from other kernel requests ... By placing our idle-barriers in the i915_active fence tree, we expose those for reuse by other components that are issuing requests along the kernel_context. Reusing the proto-barrier active_node is perfectly fine as the new request implies a context-switch, and so an opportune point to run the idle-barrier. However, the proto-barrier is not equivalent to a normal active_node and care must be taken to avoid dereferencing the ERR_PTR used as its request marker. v2: Comment the more egregious cheek v3: A glossary! Reported-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Fixes: ce476c80b8 ("drm/i915: Keep contexts pinned until after the next kernel context switch") Fixes: a9877da2d6 ("drm/i915/oa: Reconfigure contexts on the fly") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190802100015.1281-1-chris@chris-wilson.co.uk		2019-08-02 11:53:04 +01:00
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selftests	drm/i915: Rename i915_timeline to intel_timeline and move under gt	2019-06-21 13:48:53 +01:00
uc	drm/i915/uc: Stop sanitizing enable_guc modparam	2019-08-01 21:13:32 +01:00
gen6_renderstate.c	drm/i915: Move the renderstate setup under gt/	2019-07-04 11:48:22 +01:00
gen7_renderstate.c	drm/i915: Move the renderstate setup under gt/	2019-07-04 11:48:22 +01:00
gen8_renderstate.c	drm/i915: Move the renderstate setup under gt/	2019-07-04 11:48:22 +01:00
gen9_renderstate.c	drm/i915: Move the renderstate setup under gt/	2019-07-04 11:48:22 +01:00
intel_breadcrumbs.c
intel_context_types.h	drm/i915/gt: Provide a local intel_context.vm	2019-07-30 16:09:35 +01:00
intel_context.c	drm/i915: Allow sharing the idle-barrier from other kernel requests	2019-08-02 11:53:04 +01:00
intel_context.h	drm/i915: Allow sharing the idle-barrier from other kernel requests	2019-08-02 11:53:04 +01:00
intel_engine_cs.c	drm/i915: Fix and improve MCR selection logic	2019-07-19 15:35:19 +01:00
intel_engine_pm.c	drm/i915: Allow sharing the idle-barrier from other kernel requests	2019-08-02 11:53:04 +01:00
intel_engine_pm.h	drm/i915: Lift intel_engines_resume() to callers	2019-06-26 18:01:01 +01:00
intel_engine_types.h	drm/i915: Inline engine->init_context into its caller	2019-07-30 11:50:42 +01:00
intel_engine.h	drm/i915/gt: Use intel_gt as the primary object for handling resets	2019-07-12 21:06:56 +01:00
intel_gpu_commands.h	drm/i915/selftests: Ensure we don't clamp a random offset to 32b	2019-07-11 10:06:37 +01:00
intel_gt_pm.c	drm/i915/gt: Introduce intel_gt_runtime_suspend/resume	2019-08-01 17:58:54 +01:00
intel_gt_pm.h	drm/i915/pmu: Atomically acquire the gt_pm wakeref	2019-08-02 08:08:20 +01:00
intel_gt_types.h	drm/i915/guc: prefer intel_gt in guc interrupt functions	2019-07-13 20:11:36 +01:00
intel_gt.c	drm/i915/uc: Move uC early functions inside the GT ones	2019-08-01 17:58:52 +01:00
intel_gt.h	drm/i915/gt: Move gt_cleanup_early out of gem_cleanup_early	2019-08-01 17:58:50 +01:00
intel_hangcheck.c	drm/i915/gt: Use intel_gt as the primary object for handling resets	2019-07-12 21:06:56 +01:00
intel_lrc_reg.h
intel_lrc.c	drm/i915: Remove lrc default desc from GEM context	2019-08-01 17:37:02 +01:00
intel_lrc.h
intel_mocs.c	drm/i915: Move MOCS setup to intel_mocs.c	2019-07-31 07:40:35 -07:00
intel_mocs.h	drm/i915: Move MOCS setup to intel_mocs.c	2019-07-31 07:40:35 -07:00
intel_renderstate.c	drm/i915: Inline engine->init_context into its caller	2019-07-30 11:50:42 +01:00
intel_renderstate.h	drm/i915: Move the renderstate setup under gt/	2019-07-04 11:48:22 +01:00
intel_reset_types.h	drm/i915/gt: Use intel_gt as the primary object for handling resets	2019-07-12 21:06:56 +01:00
intel_reset.c	drm/i915/uc: Unify uC platform check	2019-07-25 07:30:41 +01:00
intel_reset.h	drm/i915/gt: Use intel_gt as the primary object for handling resets	2019-07-12 21:06:56 +01:00
intel_ringbuffer.c	drm/i915/gt: Provide a local intel_context.vm	2019-07-30 16:09:35 +01:00
intel_sseu.c
intel_sseu.h
intel_timeline_types.h	drm/i915: Rename i915_timeline to intel_timeline and move under gt	2019-06-21 13:48:53 +01:00
intel_timeline.c	drm/i915/gt: Always call kref_init for the timeline	2019-06-26 07:25:54 +01:00
intel_timeline.h	drm/i915: Rename i915_timeline to intel_timeline and move under gt	2019-06-21 13:48:53 +01:00
intel_workarounds_types.h	drm/i915: Add engine name to workaround debug print	2019-07-12 09:55:30 +01:00
intel_workarounds.c	drm/i915/icl: Add Wa_1409178092	2019-07-19 15:35:21 +01:00
intel_workarounds.h	drm/i915: Convert gt workarounds to intel_gt	2019-06-21 13:48:25 +01:00
Makefile	drm/i915: use upstream version of header tests	2019-07-30 12:11:57 +03:00
mock_engine.c	drm/i915/gt: Hook up intel_context_fini()	2019-07-22 23:20:07 +01:00
mock_engine.h
selftest_context.c	drm/i915: Allow sharing the idle-barrier from other kernel requests	2019-08-02 11:53:04 +01:00
selftest_engine_cs.c
selftest_hangcheck.c	drm/i915/selftests: Careful not to flush hang_fini on error setups	2019-07-29 11:00:18 +01:00
selftest_lrc.c	drm/i915/selftests: Pass intel_context to igt_spinner	2019-07-31 09:45:27 +01:00
selftest_reset.c	drm/i915/gt: Use intel_gt as the primary object for handling resets	2019-07-12 21:06:56 +01:00
selftest_timeline.c	drm/i915/gt: Use intel_gt as the primary object for handling resets	2019-07-12 21:06:56 +01:00
selftest_workarounds.c	drm/i915/selftests: Pass intel_context to igt_spinner	2019-07-31 09:45:27 +01:00