Commit 2c32f734 authored Mar 20, 2014 by Lucille Sylvester

msm: kgsl: Change call timing to alleviate mutex contention



Finish the state transition in the _idle_check function before
calling to update devfreq.  With this reordering the devfreq
notifier won't be stalled waiting for the GPU's device mutex.

Change-Id: I887d9b9d67292b0526de8f9692ff9f210a189fa5
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>

parent 018ecdd9

drivers/gpu/msm/kgsl_pwrctrl.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -1208,8 +1208,6 @@ void kgsl_idle_check(struct work_struct *work)

		mutex_lock(&device->mutex);

		kgsl_pwrscale_update(device);

		if (device->state == KGSL_STATE_ACTIVE
		\|\| device->state == KGSL_STATE_NAP) {

		@@ -1234,6 +1232,7 @@ void kgsl_idle_check(struct work_struct *work)
		}
		}

		kgsl_pwrscale_update(device);
		mutex_unlock(&device->mutex);
		}
		EXPORT_SYMBOL(kgsl_idle_check);