From: Frederic Weisbecker Date: Tue, 29 Nov 2011 00:26:56 +0000 (-0800) Subject: rcu: Irq nesting is always 0 on rcu_enter_idle_common X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=facc4e159672b4ed10aa18147bfa187b013c9505;p=openwrt%2Fstaging%2Fblogic.git rcu: Irq nesting is always 0 on rcu_enter_idle_common Because tasks don't nest, the ->dyntick_nesting must always be zero upon entry to rcu_idle_enter_common(). Therefore, pass "0" rather than the counter itself. Signed-off-by: Frederic Weisbecker Cc: Josh Triplett Signed-off-by: Paul E. McKenney --- diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 860c02c7c959..c0ed3765ec39 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -350,12 +350,11 @@ static int rcu_implicit_offline_qs(struct rcu_data *rdp) */ static void rcu_idle_enter_common(struct rcu_dynticks *rdtp, long long oldval) { - trace_rcu_dyntick("Start", oldval, rdtp->dynticks_nesting); + trace_rcu_dyntick("Start", oldval, 0); if (!is_idle_task(current)) { struct task_struct *idle = idle_task(smp_processor_id()); - trace_rcu_dyntick("Error on entry: not idle task", - oldval, rdtp->dynticks_nesting); + trace_rcu_dyntick("Error on entry: not idle task", oldval, 0); ftrace_dump(DUMP_ALL); WARN_ONCE(1, "Current pid: %d comm: %s / Idle pid: %d comm: %s", current->pid, current->comm,