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drm/i915: Trim delays for wedging

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CI still reports the occasional multi-second delay for resets, in
particular along the wedge+recovery paths. As the likely, and unbounded,
delay here is from sync_rcu, use the expedited variant instead.

Testcase: igt/gem_eio/unwedge-stress
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190219122215.8941-7-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-02-19 12:21:57 +00:00
parent 370d757da9
commit 8f54b3c6c9
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/i915_reset.c
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@ -830,7 +830,7 @@ static void __i915_gem_set_wedged(struct drm_i915_private *i915)
* either this call here to intel_engine_write_global_seqno, or the one
* in nop_submit_request.
*/
synchronize_rcu();
synchronize_rcu_expedited();
/* Mark all executing requests as skipped */
for_each_engine(engine, i915, id)