lkml.org 
[lkml]   [2015]   [Mar]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH tip/core/rcu 3/5] rcu: Update from rcu_expedited variable to rcu_gp_is_expedited()
Date
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>

This commit updates open-coded tests of the rcu_expedited variable
to instead use rcu_gp_is_expedited().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
kernel/rcu/srcu.c | 2 +-
kernel/rcu/tree.c | 9 +++++----
kernel/rcu/tree_plugin.h | 2 +-
3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
index 445bf8ffe3fb..c871f07eff69 100644
--- a/kernel/rcu/srcu.c
+++ b/kernel/rcu/srcu.c
@@ -507,7 +507,7 @@ static void __synchronize_srcu(struct srcu_struct *sp, int trycount)
*/
void synchronize_srcu(struct srcu_struct *sp)
{
- __synchronize_srcu(sp, rcu_expedited
+ __synchronize_srcu(sp, rcu_gp_is_expedited()
? SYNCHRONIZE_SRCU_EXP_TRYCOUNT
: SYNCHRONIZE_SRCU_TRYCOUNT);
}
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 48d640ca1a05..4325fbe79d84 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -2954,7 +2954,7 @@ void synchronize_sched(void)
"Illegal synchronize_sched() in RCU-sched read-side critical section");
if (rcu_blocking_is_gp())
return;
- if (rcu_expedited)
+ if (rcu_gp_is_expedited())
synchronize_sched_expedited();
else
wait_rcu_gp(call_rcu_sched);
@@ -2981,7 +2981,7 @@ void synchronize_rcu_bh(void)
"Illegal synchronize_rcu_bh() in RCU-bh read-side critical section");
if (rcu_blocking_is_gp())
return;
- if (rcu_expedited)
+ if (rcu_gp_is_expedited())
synchronize_rcu_bh_expedited();
else
wait_rcu_gp(call_rcu_bh);
@@ -3660,11 +3660,12 @@ static int rcu_pm_notify(struct notifier_block *self,
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
if (nr_cpu_ids <= 256) /* Expediting bad for large systems. */
- rcu_expedited = 1;
+ rcu_expedite_gp();
break;
case PM_POST_HIBERNATION:
case PM_POST_SUSPEND:
- rcu_expedited = 0;
+ if (nr_cpu_ids <= 256) /* Expediting bad for large systems. */
+ rcu_unexpedite_gp();
break;
default:
break;
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 0a571e9a0f1d..63726b734d34 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -585,7 +585,7 @@ void synchronize_rcu(void)
"Illegal synchronize_rcu() in RCU read-side critical section");
if (!rcu_scheduler_active)
return;
- if (rcu_expedited)
+ if (rcu_gp_is_expedited())
synchronize_rcu_expedited();
else
wait_rcu_gp(call_rcu);
--
1.8.1.5


\
 
 \ /
  Last update: 2015-03-03 18:21    [W:1.108 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site