| Date | Wed, 22 Apr 2020 13:27:21 +0200 | From | Peter Zijlstra <> | Subject | [PATCH 02/23] sched,bL_switcher: Convert to sched_set_fifo*() |
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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: nico@fluxnic.net Cc: rmk+kernel@arm.linux.org.uk Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> --- arch/arm/common/bL_switcher.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/arch/arm/common/bL_switcher.c +++ b/arch/arm/common/bL_switcher.c @@ -270,12 +270,11 @@ static struct bL_thread bL_threads[NR_CP static int bL_switcher_thread(void *arg) { struct bL_thread *t = arg; - struct sched_param param = { .sched_priority = 1 }; int cluster; bL_switch_completion_handler completer; void *completer_cookie; - sched_setscheduler_nocheck(current, SCHED_FIFO, ¶m); + sched_set_fifo_low(current); complete(&t->started); do {
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