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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-08-14 16:38:46 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-09-07 16:27:35 -0700
commit284a8c93af47306beed967a303d84730b32bab39 (patch)
tree7744a2f51d5f59b2a7241c09fbc5325da37dc800 /kernel/softirq.c
parent1d082fd061884a587c490c4fc8a2056ce1e47624 (diff)
downloadlwn-284a8c93af47306beed967a303d84730b32bab39.tar.gz
lwn-284a8c93af47306beed967a303d84730b32bab39.zip
rcu: Per-CPU operation cleanups to rcu_*_qs() functions
The rcu_bh_qs(), rcu_preempt_qs(), and rcu_sched_qs() functions use old-style per-CPU variable access and write to ->passed_quiesce even if it is already set. This commit therefore updates to use the new-style per-CPU variable access functions and avoids the spurious writes. This commit also eliminates the "cpu" argument to these functions because they are always invoked on the indicated CPU. Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/softirq.c')
-rw-r--r--kernel/softirq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 5918d227730f..348ec763b104 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -278,7 +278,7 @@ restart:
pending >>= softirq_bit;
}
- rcu_bh_qs(smp_processor_id());
+ rcu_bh_qs();
local_irq_disable();
pending = local_softirq_pending();