[tip: sched/fifo] sched,bL_switcher: Convert to sched_set_fifo*()

[tip-bot2 for Peter Zijlstra]

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 <pet...@infradead.org>
AuthorDate:    Tue, 21 Apr 2020 12:09:13 +02:00
Committer:     Peter Zijlstra <pet...@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+ker...@arm.linux.org.uk
Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Reviewed-by: Ingo Molnar <mi...@kernel.org>
Acked-by: Nicolas Pitre <n...@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, &param);
+       sched_set_fifo_low(current);
        complete(&t->started);
 
        do {