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authorFrederic Weisbecker <fweisbec@gmail.com>2011-11-28 16:26:56 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-12-11 10:32:08 -0800
commitfacc4e159672b4ed10aa18147bfa187b013c9505 (patch)
tree0b058683e1dde49a73b858fc29477e6f76860add
parentb6fc6020140db437069d5bec447858fcfd64d31c (diff)
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 <fweisbec@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
-rw-r--r--kernel/rcutree.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 860c02c7c95..c0ed3765ec3 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,