diff options
| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-05-10 15:37:48 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-02 12:34:42 -0700 |
| commit | 28f8555364ef5b54b21251c5c8022109a70626e9 (patch) | |
| tree | a04625ef3732a0f758bde40ebde8f8d790da5575 | |
| parent | bf1304e9cd755be7814ac8365834b7a1d0f06b58 (diff) | |
| download | linux-28f8555364ef5b54b21251c5c8022109a70626e9.tar.gz linux-28f8555364ef5b54b21251c5c8022109a70626e9.tar.bz2 linux-28f8555364ef5b54b21251c5c8022109a70626e9.zip | |
rcu: The rcu_needs_cpu() function is not a quiescent state
The TINY_PREEMPT_RCU() function rcu_preempt_needs_cpu(), which is called
from rcu_needs_cpu(), assumes that it is in a quiescent state with respect
to the CPU. This is no longer the case. This commit therefore updates
rcu_preempt_needs_cpu() to make it aware that it is not running in a
quiescent state.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Pascal Chapperon <pascal.chapperon@wanadoo.fr>
| -rw-r--r-- | kernel/rcutiny_plugin.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h index fc31a2d65100..849ede51c12d 100644 --- a/kernel/rcutiny_plugin.h +++ b/kernel/rcutiny_plugin.h @@ -846,8 +846,6 @@ EXPORT_SYMBOL_GPL(synchronize_rcu_expedited); */ int rcu_preempt_needs_cpu(void) { - if (!rcu_preempt_running_reader()) - rcu_preempt_cpu_qs(); return rcu_preempt_ctrlblk.rcb.rcucblist != NULL; } |