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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2009-08-22 13:56:51 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-23 10:32:39 +0200 |
| commit | a157229cabd6dd8cfa82525fc9bf730c94cc9ac2 (patch) | |
| tree | 886013efc2f25dab915640acf46151fac7ae57b4 /kernel/timer.c | |
| parent | 22f00b69f6a7e1e18e821979a23e8307c2de9888 (diff) | |
| download | lwn-a157229cabd6dd8cfa82525fc9bf730c94cc9ac2.tar.gz lwn-a157229cabd6dd8cfa82525fc9bf730c94cc9ac2.zip | |
rcu: Simplify rcu_pending()/rcu_check_callbacks() API
All calls from outside RCU are of the form:
if (rcu_pending(cpu))
rcu_check_callbacks(cpu, user);
This is silly, instead we put a call to rcu_pending() in
rcu_check_callbacks(), and then make the outside calls be to
rcu_check_callbacks(). This cuts down on the code a bit and
also gives the compiler a better chance of optimizing.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josht@linux.vnet.ibm.com
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
LKML-Reference: <125097461311-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/timer.c')
| -rw-r--r-- | kernel/timer.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index a7f07d5a6241..a3d25f415019 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1156,8 +1156,7 @@ void update_process_times(int user_tick) /* Note: this timer irq context must be accounted for as well. */ account_process_tick(p, user_tick); run_local_timers(); - if (rcu_pending(cpu)) - rcu_check_callbacks(cpu, user_tick); + rcu_check_callbacks(cpu, user_tick); printk_tick(); scheduler_tick(); run_posix_cpu_timers(p); |