summaryrefslogtreecommitdiffstats
path: root/kernel/sched
diff options
context:
space:
mode:
authorAndreea-Cristina Bernat <bernat.ada@gmail.com>2014-08-22 17:50:43 +0300
committerIngo Molnar <mingo@kernel.org>2014-09-05 08:11:57 +0200
commit35b123e2f701b28977db2cde7dbbdb3fad28cad1 (patch)
tree27019a13ac925dfc619ebbb425fd285ccdbcac5b /kernel/sched
parent163122b7fcfa28c0e4a838fcc8043c616746802e (diff)
downloadlinux-35b123e2f701b28977db2cde7dbbdb3fad28cad1.tar.bz2
sched/fair: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
The use of "rcu_assign_pointer()" is NULLing out the pointer. According to RCU_INIT_POINTER()'s block comment: "1. This use of RCU_INIT_POINTER() is NULLing out the pointer" it is better to use it instead of rcu_assign_pointer() because it has a smaller overhead. The following Coccinelle semantic patch was used: @@ @@ - rcu_assign_pointer + RCU_INIT_POINTER (..., NULL) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: paulmck@linux.vnet.ibm.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20140822145043.GA580@ada Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/fair.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index d3427a8f254b..02fc949eb348 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1780,7 +1780,7 @@ void task_numa_free(struct task_struct *p)
list_del(&p->numa_entry);
grp->nr_tasks--;
spin_unlock_irqrestore(&grp->lock, flags);
- rcu_assign_pointer(p->numa_group, NULL);
+ RCU_INIT_POINTER(p->numa_group, NULL);
put_numa_group(grp);
}