openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

sched,drm/scheduler: Convert to sched_set_fifo*() 

Because SCHED_FIFO is a broken scheduler model (see previous patches)
take away the priority field, the kernel can't possibly make an
informed decision.

In this case, use fifo_low, because it only cares about being above
SCHED_NORMAL. Effectively no change in behaviour.

Cc: alexander.deucher@amd.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra 2020-04-21 12:09:13 +02:00
parent 64419ca676
commit 7b31e940b1
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/scheduler/sched_main.c
View File

@ -760,11 +760,10 @@ static bool drm_sched_blocked(struct drm_gpu_scheduler *sched)
*/ */
static int drm_sched_main(void *param) static int drm_sched_main(void *param)
{ {
struct sched_param sparam = {.sched_priority = 1};
struct drm_gpu_scheduler *sched = (struct drm_gpu_scheduler *)param; struct drm_gpu_scheduler *sched = (struct drm_gpu_scheduler *)param;
int r; int r;
sched_setscheduler(current, SCHED_FIFO, &sparam); sched_set_fifo_low(current);
while (!kthread_should_stop()) { while (!kthread_should_stop()) {
struct drm_sched_entity *entity = NULL; struct drm_sched_entity *entity = NULL;