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| author |   Frederic Weisbecker <fweisbec@gmail.com> | 2011-11-28 16:26:56 -0800 |
|---|---|---|
| committer |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-12-11 10:32:08 -0800 |
| commit | facc4e159672b4ed10aa18147bfa187b013c9505 (patch) | |
| tree | 0b058683e1dde49a73b858fc29477e6f76860add /kernel/rcutree.c | |
| parent | rcu: Don't check irq nesting from rcu idle entry/exit (diff) | |
| download | linux-dev-facc4e159672b4ed10aa18147bfa187b013c9505.tar.xz linux-dev-facc4e159672b4ed10aa18147bfa187b013c9505.zip | |
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/rcutree.c')
| -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) */ 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, |