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@xxxxxxxxxxxxx>
AuthorDate: Tue, 21 Apr 2020 12:09:13 +02:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxx
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Nicolas Pitre <nico@xxxxxxxxxxx>
---
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 {
|