diff options
author | Frederic Weisbecker <fweisbec@gmail.com> | 2011-11-28 19:26:56 -0500 |
---|---|---|
committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-12-11 13:32:08 -0500 |
commit | facc4e159672b4ed10aa18147bfa187b013c9505 (patch) | |
tree | 0b058683e1dde49a73b858fc29477e6f76860add /kernel | |
parent | b6fc6020140db437069d5bec447858fcfd64d31c (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>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/rcutree.c | 5 |
1 files changed, 2 insertions, 3 deletions
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) | |||
350 | */ | 350 | */ |
351 | static void rcu_idle_enter_common(struct rcu_dynticks *rdtp, long long oldval) | 351 | static void rcu_idle_enter_common(struct rcu_dynticks *rdtp, long long oldval) |
352 | { | 352 | { |
353 | trace_rcu_dyntick("Start", oldval, rdtp->dynticks_nesting); | 353 | trace_rcu_dyntick("Start", oldval, 0); |
354 | if (!is_idle_task(current)) { | 354 | if (!is_idle_task(current)) { |
355 | struct task_struct *idle = idle_task(smp_processor_id()); | 355 | struct task_struct *idle = idle_task(smp_processor_id()); |
356 | 356 | ||
357 | trace_rcu_dyntick("Error on entry: not idle task", | 357 | trace_rcu_dyntick("Error on entry: not idle task", oldval, 0); |
358 | oldval, rdtp->dynticks_nesting); | ||
359 | ftrace_dump(DUMP_ALL); | 358 | ftrace_dump(DUMP_ALL); |
360 | WARN_ONCE(1, "Current pid: %d comm: %s / Idle pid: %d comm: %s", | 359 | WARN_ONCE(1, "Current pid: %d comm: %s / Idle pid: %d comm: %s", |
361 | current->pid, current->comm, | 360 | current->pid, current->comm, |