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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2011-11-11 00:48:45 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-12-11 19:31:48 +0100 |
| commit | 99745b6a83414006f5c1e83efaebb423b41b67ef (patch) | |
| tree | 454ab3cf035a8d9a42f378066b166e8b2e6ba927 /kernel | |
| parent | sched: Add is_idle_task() to handle invalidated uses of idle_cpu() (diff) | |
| download | linux-99745b6a83414006f5c1e83efaebb423b41b67ef.tar.xz linux-99745b6a83414006f5c1e83efaebb423b41b67ef.zip | |
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 <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcutiny.c | 4 | ||||
| -rw-r--r-- | kernel/rcutree.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c index 4e16ce36fa03..e5bd94954fa3 100644 --- a/kernel/rcutiny.c +++ b/kernel/rcutiny.c @@ -64,7 +64,7 @@ static void rcu_idle_enter_common(long long oldval) return; } RCU_TRACE(trace_rcu_dyntick("Start", oldval, rcu_dynticks_nesting)); - if (current->pid != 0) { + if (!is_idle_task(current)) { struct task_struct *idle = idle_task(smp_processor_id()); RCU_TRACE(trace_rcu_dyntick("Error on entry: not idle task", @@ -118,7 +118,7 @@ static void rcu_idle_exit_common(long long oldval) return; } RCU_TRACE(trace_rcu_dyntick("End", oldval, rcu_dynticks_nesting)); - if (current->pid != 0) { + if (!is_idle_task(current)) { struct task_struct *idle = idle_task(smp_processor_id()); RCU_TRACE(trace_rcu_dyntick("Error on exit: not idle task", diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 49e0783fb200..7fb8b0e60811 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", |