From: Chris Wilson Date: Tue, 24 Oct 2017 20:50:53 +0000 (+0100) Subject: drm/i915: Call cond_resched() before repeating i915_gem_evict_something() X-Git-Tag: v4.16-rc1~31^2~35^2~193 X-Git-Url: http://git.agner.ch/gitweb/?a=commitdiff_plain;h=753bdbd001dca74f9f4528d7be415801f043748a;p=linux.git drm/i915: Call cond_resched() before repeating i915_gem_evict_something() Insert a breakpoint, a chance to escape back to the scheduler and run something else for a bit, if we find that the GGTT is full and needs to be idled in order to make some room. In practice, this should only be an issue in stress tests as the wait itself will normally give the chance for the scheduler to intervene and make progress. References: https://bugs.freedesktop.org/show_bug.cgi?id=103438 Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Link: https://patchwork.freedesktop.org/patch/msgid/20171024205053.7845-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen --- diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c index 8daa8a78cdc0..a6b769994d8d 100644 --- a/drivers/gpu/drm/i915/i915_gem_evict.c +++ b/drivers/gpu/drm/i915/i915_gem_evict.c @@ -216,6 +216,7 @@ search_again: if (ret) return ret; + cond_resched(); goto search_again; }