mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-22 17:01:14 +00:00
Code Issues Releases Wiki Activity

drm/i915: Wait for the struct_mutex on idling

Browse source 
When the system is idling, contention for struct_mutex should be low and
so we will be more efficient to wait for a contended mutex than
reschedule.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190430094405.6127-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-04-30 10:44:04 +01:00
parent d5f9db2c2a
commit 8a9b36e258
1 changed files with 1 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/gpu/drm/i915/i915_gem_pm.c
View file

@ -47,13 +47,7 @@ static void idle_work_handler(struct work_struct *work)
struct drm_i915_private *i915 =
container_of(work, typeof(*i915), gem.idle_work.work);
if (!mutex_trylock(&i915->drm.struct_mutex)) {
/* Currently busy, come back later */
mod_delayed_work(i915->wq,
&i915->gem.idle_work,
msecs_to_jiffies(50));
return;
}
mutex_lock(&i915->drm.struct_mutex);
intel_wakeref_lock(&i915->gt.wakeref);
if (!intel_wakeref_active(&i915->gt.wakeref))