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sched,rcutorture: Convert to sched_set_fifo_low() 

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 no change.

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>
This commit is contained in:
Peter Zijlstra 2020-04-21 12:09:13 +02:00
parent b1433395c4
commit ce1c8afd3f
1 changed files with 1 additions and 3 deletions
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4
kernel/rcu/rcutorture.c
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@ -889,13 +889,11 @@ static int rcu_torture_boost(void *arg)
unsigned long endtime; unsigned long endtime;
unsigned long oldstarttime; unsigned long oldstarttime;
struct rcu_boost_inflight rbi = { .inflight = 0 }; struct rcu_boost_inflight rbi = { .inflight = 0 };
struct sched_param sp;
VERBOSE_TOROUT_STRING("rcu_torture_boost started"); VERBOSE_TOROUT_STRING("rcu_torture_boost started");
/* Set real-time priority. */ /* Set real-time priority. */
sp.sched_priority = 1; if (sched_set_fifo_low(current) < 0) {
if (sched_setscheduler(current, SCHED_FIFO, &sp) < 0) {
VERBOSE_TOROUT_STRING("rcu_torture_boost RT prio failed!"); VERBOSE_TOROUT_STRING("rcu_torture_boost RT prio failed!");
n_rcu_torture_boost_rterror++; n_rcu_torture_boost_rterror++;
} }