Messages in this thread Patch in this message | | | Date | Fri, 24 Jul 2020 08:33:51 -0000 | From | "tip-bot2 for Peter Zijlstra" <> | Subject | [tip: sched/fifo] sched,bL_switcher: Convert to sched_set_fifo*() |
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The following commit has been merged into the sched/fifo branch of tip:
Commit-ID: 0030c1d4a38757fb54a0c96e5e8b59cc0c4f3f28 Gitweb: https://git.kernel.org/tip/0030c1d4a38757fb54a0c96e5e8b59cc0c4f3f28 Author: Peter Zijlstra <peterz@infradead.org> AuthorDate: Tue, 21 Apr 2020 12:09:13 +02:00 Committer: Peter Zijlstra <peterz@infradead.org> CommitterDate: Mon, 15 Jun 2020 14:10:20 +02:00
sched,bL_switcher: 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: rmk+kernel@arm.linux.org.uk Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> Acked-by: Nicolas Pitre <nico@fluxnic.net> --- arch/arm/common/bL_switcher.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c index 746e1fc..9a9aa53 100644 --- 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_CPUS]; 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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