From: Chris Wilson Date: Tue, 19 Feb 2019 12:21:57 +0000 (+0000) Subject: drm/i915: Trim delays for wedging X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=8f54b3c6c921275d10e33746553c40294ffa0d58;p=openwrt%2Fstaging%2Fblogic.git drm/i915: Trim delays for wedging 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 Cc: Mika Kuoppala Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20190219122215.8941-7-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_reset.c b/drivers/gpu/drm/i915/i915_reset.c index 4df4c674223d..034b654be74c 100644 --- a/drivers/gpu/drm/i915/i915_reset.c +++ b/drivers/gpu/drm/i915/i915_reset.c @@ -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)