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| author |   Paul E. McKenney <paulmck@kernel.org> | 2020-05-07 16:47:13 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2020-06-29 12:00:22 -0700 |
| commit | ea6eed9f7d7382c7230202d4c3bf74185f193394 (patch) | |
| tree | 8364cdb593a9aaf6e721c4df36ddbba79899f18a /kernel/rcu | |
| parent | Linux 5.8-rc3 (diff) | |
| download | linux-dev-ea6eed9f7d7382c7230202d4c3bf74185f193394.tar.xz linux-dev-ea6eed9f7d7382c7230202d4c3bf74185f193394.zip | |
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.h | 6 |
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--; |