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authorPeter Zijlstra <peterz@infradead.org>2020-04-21 12:09:13 +0200
committerPeter Zijlstra <peterz@infradead.org>2020-06-15 14:10:24 +0200
commit93db9129fa4beb78e2227554d237e8db04ca514c (patch)
tree7ecfc674c854d019a3a5958bad4ed64d9dd0f186 /kernel/locking
parentsched,irq: Convert to sched_set_fifo() (diff)
downloadlinux-93db9129fa4beb78e2227554d237e8db04ca514c.tar.xz
linux-93db9129fa4beb78e2227554d237e8db04ca514c.zip
sched,locktorture: 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. Effectively changes prio from 99 to 50. Cc: paulmck@kernel.org Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/locking')
-rw-r--r--kernel/locking/locktorture.c10
1 files changed, 2 insertions, 8 deletions
diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c
index 5efbfc68ce99..fca41a7ded0c 100644
--- a/kernel/locking/locktorture.c
+++ b/kernel/locking/locktorture.c
@@ -436,8 +436,6 @@ static int torture_rtmutex_lock(void) __acquires(torture_rtmutex)
static void torture_rtmutex_boost(struct torture_random_state *trsp)
{
- int policy;
- struct sched_param param;
const unsigned int factor = 50000; /* yes, quite arbitrary */
if (!rt_task(current)) {
@@ -448,8 +446,7 @@ static void torture_rtmutex_boost(struct torture_random_state *trsp)
*/
if (trsp && !(torture_random(trsp) %
(cxt.nrealwriters_stress * factor))) {
- policy = SCHED_FIFO;
- param.sched_priority = MAX_RT_PRIO - 1;
+ sched_set_fifo(current);
} else /* common case, do nothing */
return;
} else {
@@ -462,13 +459,10 @@ static void torture_rtmutex_boost(struct torture_random_state *trsp)
*/
if (!trsp || !(torture_random(trsp) %
(cxt.nrealwriters_stress * factor * 2))) {
- policy = SCHED_NORMAL;
- param.sched_priority = 0;
+ sched_set_normal(current, 0);
} else /* common case, do nothing */
return;
}
-
- sched_setscheduler_nocheck(current, policy, &param);
}
static void torture_rtmutex_delay(struct torture_random_state *trsp)