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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2025-07-14 17:39:48 +0200 |
|---|---|---|
| committer | Maarten Lankhorst <dev@lankhorst.se> | 2025-07-15 11:58:16 +0200 |
| commit | 8a643df55f3a9c034cf8d1942c25a6eb08d57d9d (patch) | |
| tree | 936c1d71d2ec415abb72c068b9815d98ace837f9 /tools/perf/scripts/python/syscall-counts.py | |
| parent | bba9aa41654036534d86b198f5647a9ce15ebd7f (diff) | |
drm/i915: Don't check for atomic context on PREEMPT_RT
The !in_atomic() check in _wait_for_atomic() triggers on PREEMPT_RT
because the uncore::lock is a spinlock_t and does not disable
preemption or interrupts.
Changing the uncore:lock to a raw_spinlock_t doubles the worst case
latency on an otherwise idle testbox during testing.
Ignore _WAIT_FOR_ATOMIC_CHECK() on PREEMPT_RT.
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://lore.kernel.org/all/20211006164628.s2mtsdd2jdbfyf7g@linutronix.de/
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20250714153954.629393-4-bigeasy@linutronix.de
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions