The following commit has been merged into the sched/fifo branch of tip: Commit-ID: 7b31e940b17bc47ca2f5e332c166231f01317469 Gitweb: https://git.kernel.org/tip/7b31e940b17bc47ca2f5e332c166231f01317469 Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx> AuthorDate: Tue, 21 Apr 2020 12:09:13 +02:00 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Mon, 15 Jun 2020 14:10:21 +02:00 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@xxxxxxx Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Reviewed-by: Ingo Molnar <mingo@xxxxxxxxxx> --- drivers/gpu/drm/scheduler/sched_main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c index 2f31910..17cf77e 100644 --- a/drivers/gpu/drm/scheduler/sched_main.c +++ b/drivers/gpu/drm/scheduler/sched_main.c @@ -760,11 +760,10 @@ static bool drm_sched_blocked(struct drm_gpu_scheduler *sched) */ static int drm_sched_main(void *param) { - struct sched_param sparam = {.sched_priority = 1}; struct drm_gpu_scheduler *sched = (struct drm_gpu_scheduler *)param; int r; - sched_setscheduler(current, SCHED_FIFO, &sparam); + sched_set_fifo_low(current); while (!kthread_should_stop()) { struct drm_sched_entity *entity = NULL;
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