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| author | Peter Zijlstra (Intel) <peterz@infradead.org> | 2017-07-12 07:59:54 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-08-17 07:26:24 -0700 |
| commit | 3a60799269daff5ed254a9b473a8db6f0f5c6bd9 (patch) | |
| tree | f2e5e4b345aa687db597864c4c8d85d6ce183ebf /kernel/rcu | |
| parent | 2dee9404fa8c4384453a5f3a15ad74ab9480f2d6 (diff) | |
| download | linux-3a60799269daff5ed254a9b473a8db6f0f5c6bd9.tar.gz linux-3a60799269daff5ed254a9b473a8db6f0f5c6bd9.tar.bz2 linux-3a60799269daff5ed254a9b473a8db6f0f5c6bd9.zip | |
rcu: Make rcu_idle_enter() rely on callers disabling irqs
All callers to rcu_idle_enter() have irqs disabled, so there is no
point in rcu_idle_enter disabling them again. This commit therefore
replaces the irq disabling with a RCU_LOCKDEP_WARN().
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index ac2617d857a3..76f88b65961f 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -843,11 +843,8 @@ static void rcu_eqs_enter(bool user) */ void rcu_idle_enter(void) { - unsigned long flags; - - local_irq_save(flags); + RCU_LOCKDEP_WARN(!irqs_disabled(), "rcu_idle_enter() invoked with irqs enabled!!!"); rcu_eqs_enter(false); - local_irq_restore(flags); } EXPORT_SYMBOL_GPL(rcu_idle_enter); |