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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-16 10:42:38 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-08-13 17:01:08 +0200 |
| commit | 62ab7072476ae1600e877cc62b43758e485f4f1e (patch) | |
| tree | c1df0992432cf5bae0f9122d606e73628368fb8e /kernel/rcutree.c | |
| parent | bcd951cf10f24e341defcd002c15a1f4eea13ddb (diff) | |
| download | linux-62ab7072476ae1600e877cc62b43758e485f4f1e.tar.gz linux-62ab7072476ae1600e877cc62b43758e485f4f1e.tar.bz2 linux-62ab7072476ae1600e877cc62b43758e485f4f1e.zip | |
rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread
Bring RCU into the new-age CPU-hotplug fold by modifying RCU's per-CPU
kthread code to use the new smp_hotplug_thread facility.
[ tglx: Adapted it to use callbacks and to the simplified rcu yield ]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20120716103948.673354828@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/rcutree.c')
| -rw-r--r-- | kernel/rcutree.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index f08ee3bc5741..11a4fdca1df7 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -133,7 +133,6 @@ static int rcu_scheduler_fully_active __read_mostly; */ static DEFINE_PER_CPU(struct task_struct *, rcu_cpu_kthread_task); DEFINE_PER_CPU(unsigned int, rcu_cpu_kthread_status); -DEFINE_PER_CPU(int, rcu_cpu_kthread_cpu); DEFINE_PER_CPU(unsigned int, rcu_cpu_kthread_loops); DEFINE_PER_CPU(char, rcu_cpu_has_work); @@ -1468,7 +1467,6 @@ static void rcu_cleanup_dead_cpu(int cpu, struct rcu_state *rsp) struct rcu_node *rnp = rdp->mynode; /* Outgoing CPU's rdp & rnp. */ /* Adjust any no-longer-needed kthreads. */ - rcu_stop_cpu_kthread(cpu); rcu_boost_kthread_setaffinity(rnp, -1); /* Remove the dead CPU from the bitmasks in the rcu_node hierarchy. */ @@ -2595,11 +2593,9 @@ static int __cpuinit rcu_cpu_notify(struct notifier_block *self, case CPU_ONLINE: case CPU_DOWN_FAILED: rcu_boost_kthread_setaffinity(rnp, -1); - rcu_cpu_kthread_setrt(cpu, 1); break; case CPU_DOWN_PREPARE: rcu_boost_kthread_setaffinity(rnp, cpu); - rcu_cpu_kthread_setrt(cpu, 0); break; case CPU_DYING: case CPU_DYING_FROZEN: |