All of lore.kernel.org
 help / color / mirror / Atom feed
From: paulmck@kernel.org
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
	mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com,
	akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
	josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
	rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
	fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
	"Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH tip/core/rcu 10/26] rcu: Expedited grace-period sleeps to idle priority
Date: Mon, 22 Jun 2020 17:21:31 -0700	[thread overview]
Message-ID: <20200623002147.25750-10-paulmck@kernel.org> (raw)
In-Reply-To: <20200623002128.GA25456@paulmck-ThinkPad-P72>

From: "Paul E. McKenney" <paulmck@kernel.org>

This commit converts the schedule_timeout_uninterruptible() call used
by RCU's expedited grace-period processing to schedule_timeout_idle().
This conversion avoids polluting the load-average with RCU-related
sleeping.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 kernel/rcu/tree_exp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index 72952ed..1888c0e 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -403,7 +403,7 @@ static void sync_rcu_exp_select_node_cpus(struct work_struct *wp)
 			/* Online, so delay for a bit and try again. */
 			raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
 			trace_rcu_exp_grace_period(rcu_state.name, rcu_exp_gp_seq_endval(), TPS("selectofl"));
-			schedule_timeout_uninterruptible(1);
+			schedule_timeout_idle(1);
 			goto retry_ipi;
 		}
 		/* CPU really is offline, so we must report its QS. */
-- 
2.9.5


  parent reply	other threads:[~2020-06-23  0:22 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-23  0:21 [PATCH tip/core/rcu 0/26] Miscellaneous fixes for v5.9 Paul E. McKenney
2020-06-23  0:21 ` [PATCH tip/core/rcu 01/26] rcu: Initialize and destroy rcu_synchronize only when necessary paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 02/26] mm/mmap.c: Add cond_resched() for exit_mmap() CPU stalls paulmck
2020-06-23  0:47   ` Shakeel Butt
2020-06-23  0:47     ` Shakeel Butt
2020-06-23  0:57     ` Paul E. McKenney
2020-06-23 19:34   ` Joel Fernandes
2020-06-23 20:55     ` Paul E. McKenney
2020-06-23 21:01       ` Joel Fernandes
2020-06-23  0:21 ` [PATCH tip/core/rcu 03/26] rcu: Simplify the calculation of rcu_state.ncpus paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 04/26] rcu: Add callbacks-invoked counters paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 05/26] rcu: Add comment documenting rcu_callback_map's purpose paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 06/26] trace: events: rcu: Change description of rcu_dyntick trace event paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 07/26] rcu: Grace-period-kthread related sleeps to idle priority paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 08/26] rcu: Priority-boost-related " paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 09/26] rcu: No-CBs-related " paulmck
2020-06-23  0:21 ` paulmck [this message]
2020-06-23  0:21 ` [PATCH tip/core/rcu 11/26] fs/btrfs: Add cond_resched() for try_release_extent_mapping() stalls paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 12/26] rcu: Update comment from rsp->rcu_gp_seq to rsp->gp_seq paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 13/26] tick/nohz: Narrow down noise while setting current task's tick dependency paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 14/26] rcu: fix some kernel-doc warnings paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 15/26] rcu: Remove initialized but unused rnp from check_slow_task() paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 16/26] rcu: Mark rcu_nmi_enter() call to rcu_cleanup_after_idle() noinstr paulmck
2020-06-23 17:04   ` Peter Zijlstra
2020-06-23 17:50     ` Paul E. McKenney
2020-06-23  0:21 ` [PATCH tip/core/rcu 17/26] lockdep: Complain only once about RCU in extended quiescent state paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 18/26] rcu: Replace 1 with true paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 19/26] rcu: Stop shrinker loop paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 20/26] rcu: gp_max is protected by root rcu_node's lock paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 21/26] rcu: grplo/grphi just records CPU number paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 22/26] rcu: grpnum just records group number paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 23/26] kernel/rcu/tree.c: Fix kernel-doc warnings paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 24/26] rcu: fix some " paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 25/26] rcu: Remove KCSAN stubs paulmck
2020-06-23  0:21 ` [PATCH tip/core/rcu 26/26] rcu: Remove KCSAN stubs from update.c paulmck

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200623002147.25750-10-paulmck@kernel.org \
    --to=paulmck@kernel.org \
    --cc=akpm@linux-foundation.org \
    --cc=dhowells@redhat.com \
    --cc=dipankar@in.ibm.com \
    --cc=edumazet@google.com \
    --cc=fweisbec@gmail.com \
    --cc=jiangshanlai@gmail.com \
    --cc=joel@joelfernandes.org \
    --cc=josh@joshtriplett.org \
    --cc=kernel-team@fb.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mathieu.desnoyers@efficios.com \
    --cc=mingo@kernel.org \
    --cc=oleg@redhat.com \
    --cc=peterz@infradead.org \
    --cc=rcu@vger.kernel.org \
    --cc=rostedt@goodmis.org \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.