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* [PATCH 00/10] drm/i915: PREEMPT_RT related fixups.
@ 2024-04-05 14:18 Sebastian Andrzej Siewior
  2024-04-05 14:18 ` [PATCH 01/10] drm/i915: Use preempt_disable/enable_rt() where recommended Sebastian Andrzej Siewior
                   ` (21 more replies)
  0 siblings, 22 replies; 33+ messages in thread
From: Sebastian Andrzej Siewior @ 2024-04-05 14:18 UTC (permalink / raw)
  To: intel-gfx, intel-xe
  Cc: Jani Nikula, Joonas Lahtinen, Rodrigo Vivi, Thomas Gleixner,
	Tvrtko Ursulin

Hi,

The following patches are from the PREEMPT_RT queue.  It is mostly about
disabling interrupts/preemption which leads to problems. Unfortunately
DRM_I915_LOW_LEVEL_TRACEPOINTS had to be disabled because it acquires locks
from within trace points. Making the lock a raw_spinlock_t led to higher
latencies during video playback
  https://lore.kernel.org/all/20211006164628.s2mtsdd2jdbfyf7g@linutronix.de/

and I'm not sure if I hit the worse case here.
I tested it on a SandyBridge with built-in i915 by using X, OpenGL and
playing videos without noticing any warnings. However, some code paths
were not entered.
I carry them for some time now and most issues were reported by other
people and they reported that things work for them since.

Sebastian


^ permalink raw reply	[flat|nested] 33+ messages in thread

end of thread, other threads:[~2024-06-13  8:36 UTC | newest]

Thread overview: 33+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-04-05 14:18 [PATCH 00/10] drm/i915: PREEMPT_RT related fixups Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 01/10] drm/i915: Use preempt_disable/enable_rt() where recommended Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 02/10] drm/i915: Don't disable interrupts on PREEMPT_RT during atomic updates Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 03/10] drm/i915: Don't check for atomic context on PREEMPT_RT Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 04/10] drm/i915: Disable tracing points " Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 05/10] drm/i915: skip DRM_I915_LOW_LEVEL_TRACEPOINTS with NOTRACE Sebastian Andrzej Siewior
2024-04-08 17:06   ` Steven Rostedt
2024-04-09 11:06     ` Sebastian Andrzej Siewior
2024-04-09 15:55       ` Steven Rostedt
2024-04-10 11:08         ` Sebastian Andrzej Siewior
2024-04-10 14:09           ` Steven Rostedt
2024-04-05 14:18 ` [PATCH 06/10] drm/i915/gt: Queue and wait for the irq_work item Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 07/10] drm/i915/gt: Use spin_lock_irq() instead of local_irq_disable() + spin_lock() Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 08/10] drm/i915: Drop the irqs_disabled() check Sebastian Andrzej Siewior
2024-04-05 14:18 ` [PATCH 09/10] drm/i915/guc: Consider also RCU depth in busy loop Sebastian Andrzej Siewior
2024-06-11 22:18   ` Rodrigo Vivi
2024-04-05 14:18 ` [PATCH 10/10] Revert "drm/i915: Depend on !PREEMPT_RT." Sebastian Andrzej Siewior
2024-04-05 15:09 ` ✗ Fi.CI.CHECKPATCH: warning for drm/i915: PREEMPT_RT related fixups. (rev5) Patchwork
2024-04-05 15:09 ` ✗ Fi.CI.SPARSE: " Patchwork
2024-04-05 15:15 ` ✓ Fi.CI.BAT: success " Patchwork
2024-04-05 17:16 ` ✗ CI.Patch_applied: failure for drm/i915: PREEMPT_RT related fixups Patchwork
2024-04-05 18:46 ` ✗ Fi.CI.IGT: failure for drm/i915: PREEMPT_RT related fixups. (rev5) Patchwork
2024-04-10 11:35 ` ✗ Fi.CI.CHECKPATCH: warning for drm/i915: PREEMPT_RT related fixups. (rev6) Patchwork
2024-04-10 11:35 ` ✗ Fi.CI.SPARSE: " Patchwork
2024-04-10 11:58 ` ✗ CI.Patch_applied: failure for drm/i915: PREEMPT_RT related fixups. (rev2) Patchwork
2024-04-10 12:02 ` ✓ Fi.CI.BAT: success for drm/i915: PREEMPT_RT related fixups. (rev6) Patchwork
2024-04-10 22:16 ` ✗ Fi.CI.IGT: failure " Patchwork
2024-06-05 10:01 ` [PATCH 00/10] drm/i915: PREEMPT_RT related fixups Sebastian Andrzej Siewior
2024-06-11 13:06   ` Tvrtko Ursulin
2024-06-11 15:14     ` Sebastian Andrzej Siewior
2024-06-11 22:25       ` Rodrigo Vivi
2024-06-13  8:36         ` Sebastian Andrzej Siewior
2024-06-10 13:36 ` ✗ Fi.CI.BUILD: failure for drm/i915: PREEMPT_RT related fixups. (rev7) Patchwork

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