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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.h | |
| parent | bcd951cf10f24e341defcd002c15a1f4eea13ddb (diff) | |
| download | linux-62ab7072476ae1600e877cc62b43758e485f4f1e.tar.bz2 | |
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.h')
| -rw-r--r-- | kernel/rcutree.h | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h index f08176172546..1224d4c05382 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -196,12 +196,6 @@ struct rcu_node { /* Refused to boost: not sure why, though. */ /* This can happen due to race conditions. */ #endif /* #ifdef CONFIG_RCU_BOOST */ - struct task_struct *node_kthread_task; - /* kthread that takes care of this rcu_node */ - /* structure, for example, awakening the */ - /* per-CPU kthreads as needed. */ - unsigned int node_kthread_status; - /* State of node_kthread_task for tracing. */ } ____cacheline_internodealigned_in_smp; /* @@ -468,7 +462,6 @@ static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp); #ifdef CONFIG_HOTPLUG_CPU static void rcu_report_unblock_qs_rnp(struct rcu_node *rnp, unsigned long flags); -static void rcu_stop_cpu_kthread(int cpu); #endif /* #ifdef CONFIG_HOTPLUG_CPU */ static void rcu_print_detail_task_stall(struct rcu_state *rsp); static int rcu_print_task_stall(struct rcu_node *rnp); @@ -494,7 +487,6 @@ static void rcu_preempt_do_callbacks(void); static int __cpuinit rcu_spawn_one_boost_kthread(struct rcu_state *rsp, struct rcu_node *rnp); #endif /* #ifdef CONFIG_RCU_BOOST */ -static void rcu_cpu_kthread_setrt(int cpu, int to_rt); static void __cpuinit rcu_prepare_kthreads(int cpu); static void rcu_prepare_for_idle_init(int cpu); static void rcu_cleanup_after_idle(int cpu); |