From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, laijs@cn.fujitsu.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,
dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com,
bobby.prani@gmail.com,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 8/9] rcu: Fix FIXME in rcu_tasks_kthread()
Date: Tue, 28 Oct 2014 15:10:01 -0700 [thread overview]
Message-ID: <1414534202-27312-8-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <1414534202-27312-1-git-send-email-paulmck@linux.vnet.ibm.com>
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
This commit affines rcu_tasks_kthread() to the housekeeping CPUs
in CONFIG_NO_HZ_FULL builds. This is just a default, so systems
administrators are free to put this kthread somewhere else if they wish.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
kernel/rcu/update.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index 3ef8ba58694e..8a39e68ff8e0 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -531,7 +531,8 @@ static int __noreturn rcu_tasks_kthread(void *arg)
struct rcu_head *next;
LIST_HEAD(rcu_tasks_holdouts);
- /* FIXME: Add housekeeping affinity. */
+ /* Run on housekeeping CPUs by default. Sysadm can move if desired. */
+ housekeeping_affine(current);
/*
* Each pass through the following loop makes one check for
--
1.8.1.5
next prev parent reply other threads:[~2014-10-28 22:13 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-28 22:09 [PATCH tip/core/rcu 0/9] Miscellaneous fixes for 3.19 Paul E. McKenney
2014-10-28 22:09 ` [PATCH tip/core/rcu 1/9] rcu: Remove CONFIG_RCU_CPU_STALL_VERBOSE Paul E. McKenney
2014-10-28 22:09 ` [PATCH tip/core/rcu 2/9] compiler: Allow 1- and 2-byte smp_load_acquire() and smp_store_release() Paul E. McKenney
2014-10-28 22:09 ` [PATCH tip/core/rcu 3/9] drivers/md: Use rcu_dereference() for accessing rcu pointer Paul E. McKenney
2014-11-21 13:31 ` Kirill A. Shutemov
2014-11-21 14:30 ` Pranith Kumar
2014-11-21 14:58 ` Kirill A. Shutemov
2014-11-23 12:21 ` Pranith Kumar
2014-11-23 16:39 ` Eric Dumazet
2014-11-23 16:40 ` [PATCH ] drivers/md: use proper rcu accessor Eric Dumazet
2014-11-23 16:53 ` Mike Snitzer
2014-11-23 17:31 ` Eric Dumazet
2014-11-23 19:12 ` Mike Snitzer
2014-11-23 17:34 ` [PATCH v2] " Eric Dumazet
2014-11-24 4:09 ` Mike Snitzer
2014-10-28 22:09 ` [PATCH tip/core/rcu 4/9] dm: sparse: Annotate field with __rcu for checking Paul E. McKenney
2014-10-28 22:09 ` [PATCH tip/core/rcu 5/9] rcu: Add sparse check for RCU_INIT_POINTER() Paul E. McKenney
2014-10-28 22:09 ` [PATCH tip/core/rcu 6/9] rcu: Optimize cond_resched_rcu_qs() Paul E. McKenney
2014-10-28 22:10 ` [PATCH tip/core/rcu 7/9] rcu: More info about potential deadlocks with rcu_read_unlock() Paul E. McKenney
2014-10-28 22:10 ` Paul E. McKenney [this message]
2014-10-28 22:10 ` [PATCH tip/core/rcu 9/9] rcu: Provide counterpart to rcu_dereference() for non-RCU situations Paul E. McKenney
2014-10-29 10:57 ` Peter Zijlstra
2014-10-29 12:42 ` Paul E. McKenney
2014-10-29 19:15 ` Oleg Nesterov
2014-10-29 18:43 ` Paul E. McKenney
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