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| author |   Ingo Molnar <mingo@kernel.org> | 2015-10-19 10:09:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-10-19 10:09:54 +0200 |
| commit | c13dc31adb04c3f85d54d2fa13e34206f25742eb (patch) | |
| tree | 09cf55d6f3cc628ac0a303c05dfdcc9af2ad803c /kernel/rcu/srcu.c | |
| parent | Linux 4.3-rc6 (diff) | |
| parent | Merge branches 'doc.2015.10.06a', 'percpu-rwsem.2015.10.06a' and 'torture.2015.10.06a' into HEAD (diff) | |
| download | linux-dev-c13dc31adb04c3f85d54d2fa13e34206f25742eb.tar.xz linux-dev-c13dc31adb04c3f85d54d2fa13e34206f25742eb.zip | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
- Miscellaneous fixes. (Paul E. McKenney, Boqun Feng, Oleg Nesterov, Patrick Marlier)
- Improvements to expedited grace periods. (Paul E. McKenney)
- Performance improvements to and locktorture tests for percpu-rwsem.
(Oleg Nesterov, Paul E. McKenney)
- Torture-test changes. (Paul E. McKenney, Davidlohr Bueso)
- Documentation updates. (Paul E. McKenney)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/rcu/srcu.c')
| -rw-r--r-- | kernel/rcu/srcu.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c index d3fcb2ec8536..a63a1ea5a41b 100644 --- a/kernel/rcu/srcu.c +++ b/kernel/rcu/srcu.c @@ -298,11 +298,9 @@ int __srcu_read_lock(struct srcu_struct *sp) int idx; idx = READ_ONCE(sp->completed) & 0x1; - preempt_disable(); __this_cpu_inc(sp->per_cpu_ref->c[idx]); smp_mb(); /* B */ /* Avoid leaking the critical section. */ __this_cpu_inc(sp->per_cpu_ref->seq[idx]); - preempt_enable(); return idx; } EXPORT_SYMBOL_GPL(__srcu_read_lock); @@ -387,7 +385,7 @@ static void srcu_flip(struct srcu_struct *sp) * srcu_struct structure. */ void call_srcu(struct srcu_struct *sp, struct rcu_head *head, - void (*func)(struct rcu_head *head)) + rcu_callback_t func) { unsigned long flags; |