Commits
Chris Wilson committed 3fdc13c7a3c
drm/i915: Remove (struct_mutex) locking for busy-ioctl By applying the same logic as for wait-ioctl, we can query whether a request has completed without holding struct_mutex. The biggest impact system-wide is removing the flush_active and the contention that causes. Testcase: igt/gem_busy Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Akash Goel <akash.goel@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1470388464-28458-13-git-send-email-chris@chris-wilson.co.uk