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authorPaul E. McKenney <paulmck@kernel.org>2020-05-07 16:47:13 -0700
committerPaul E. McKenney <paulmck@kernel.org>2020-06-29 12:00:22 -0700
commitea6eed9f7d7382c7230202d4c3bf74185f193394 (patch)
tree8364cdb593a9aaf6e721c4df36ddbba79899f18a /kernel/rcu
parent9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68 (diff)
rcu-tasks: Convert sleeps to idle priority
This commit converts the long-standing schedule_timeout_interruptible() and schedule_timeout_uninterruptible() calls used by the various Tasks RCU's grace-period kthreads to schedule_timeout_idle(). This conversion avoids polluting the load-average with Tasks-RCU-related sleeping. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
-rw-r--r--kernel/rcu/tasks.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index ce23f6cc5043..91fee8122acd 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -205,7 +205,7 @@ static int __noreturn rcu_tasks_kthread(void *arg)
if (!rtp->cbs_head) {
WARN_ON(signal_pending(current));
set_tasks_gp_state(rtp, RTGS_WAIT_WAIT_CBS);
- schedule_timeout_interruptible(HZ/10);
+ schedule_timeout_idle(HZ/10);
}
continue;
}
@@ -227,7 +227,7 @@ static int __noreturn rcu_tasks_kthread(void *arg)
cond_resched();
}
/* Paranoid sleep to keep this from entering a tight loop */
- schedule_timeout_uninterruptible(HZ/10);
+ schedule_timeout_idle(HZ/10);
set_tasks_gp_state(rtp, RTGS_WAIT_CBS);
}
@@ -336,7 +336,7 @@ static void rcu_tasks_wait_gp(struct rcu_tasks *rtp)
/* Slowly back off waiting for holdouts */
set_tasks_gp_state(rtp, RTGS_WAIT_SCAN_HOLDOUTS);
- schedule_timeout_interruptible(HZ/fract);
+ schedule_timeout_idle(HZ/fract);
if (fract > 1)
fract--;