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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-08-22 18:16:16 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-09-25 06:44:03 -0700 |
| commit | 7a497c963eceac42677ce1f5d7bb470abedd15f4 (patch) | |
| tree | 370bd8bf6ef09ad443e8a626a0ddf2cf8d0f219f | |
| parent | 272b98c6455f00884f0350f775c5342358ebb73f (diff) | |
| download | op-kernel-dev-7a497c963eceac42677ce1f5d7bb470abedd15f4.zip op-kernel-dev-7a497c963eceac42677ce1f5d7bb470abedd15f4.tar.gz | |
rcu: Remove redundant code from rcu_cleanup_after_idle()
The rcu_try_advance_all_cbs() function returns a bool saying whether or
not there are callbacks ready to invoke, but rcu_cleanup_after_idle()
rechecks this regardless. This commit therefore uses the value returned
by rcu_try_advance_all_cbs() instead of making rcu_cleanup_after_idle()
do this recheck.
Reported-by: Tibor Billes <tbilles@gmx.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Tibor Billes <tbilles@gmx.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
| -rw-r--r-- | kernel/rcutree_plugin.h | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h index 130c97b..18d9c91 100644 --- a/kernel/rcutree_plugin.h +++ b/kernel/rcutree_plugin.h @@ -1768,17 +1768,11 @@ static void rcu_prepare_for_idle(int cpu) */ static void rcu_cleanup_after_idle(int cpu) { - struct rcu_data *rdp; - struct rcu_state *rsp; if (rcu_is_nocb_cpu(cpu)) return; - rcu_try_advance_all_cbs(); - for_each_rcu_flavor(rsp) { - rdp = per_cpu_ptr(rsp->rda, cpu); - if (cpu_has_callbacks_ready_to_invoke(rdp)) - invoke_rcu_core(); - } + if (rcu_try_advance_all_cbs()) + invoke_rcu_core(); } /* |
