From 99745b6a83414006f5c1e83efaebb423b41b67ef Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 10 Nov 2011 15:48:45 -0800 Subject: rcu: Make RCU use the new is_idle_task() API Change from direct comparison of ->pid with zero to is_idle_task(). Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney Reviewed-by: Josh Triplett --- kernel/rcutree.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel/rcutree.c') diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 49e0783fb20..7fb8b0e6081 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -355,7 +355,7 @@ static void rcu_idle_enter_common(struct rcu_dynticks *rdtp, long long oldval) return; } trace_rcu_dyntick("Start", oldval, rdtp->dynticks_nesting); - if (current->pid != 0) { + if (!is_idle_task(current)) { struct task_struct *idle = idle_task(smp_processor_id()); trace_rcu_dyntick("Error on entry: not idle task", @@ -449,7 +449,7 @@ static void rcu_idle_exit_common(struct rcu_dynticks *rdtp, long long oldval) smp_mb__after_atomic_inc(); /* See above. */ WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1)); trace_rcu_dyntick("End", oldval, rdtp->dynticks_nesting); - if (current->pid != 0) { + if (!is_idle_task(current)) { struct task_struct *idle = idle_task(smp_processor_id()); trace_rcu_dyntick("Error on exit: not idle task", -- cgit v1.2.3