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authorPaul E. McKenney <paul.mckenney@linaro.org>2011-11-10 15:48:45 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-12-11 10:31:48 -0800
commit99745b6a83414006f5c1e83efaebb423b41b67ef (patch)
tree454ab3cf035a8d9a42f378066b166e8b2e6ba927 /kernel
parentc4f3060843506ba6d473ab9a0afe5bd5dc93a00d (diff)
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.c4
-rw-r--r--kernel/rcutree.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index 4e16ce36fa0..e5bd94954fa 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 49e0783fb20..7fb8b0e6081 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",