The following commit has been merged into the core/rcu branch of tip: Commit-ID: ea6eed9f7d7382c7230202d4c3bf74185f193394 Gitweb: https://git.kernel.org/tip/ea6eed9f7d7382c7230202d4c3bf74185f193394 Author: Paul E. McKenney <[email protected]> AuthorDate: Thu, 07 May 2020 16:47:13 -07:00 Committer: Paul E. McKenney <[email protected]> CommitterDate: Mon, 29 Jun 2020 12:00:22 -07:00
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 <[email protected]> --- kernel/rcu/tasks.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index ce23f6c..91fee81 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--;
