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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2009-08-24 09:42:01 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-08-24 20:37:04 +0200 |
| commit | 33f76148ced0e0618062e302d2a9614efdbd4a06 (patch) | |
| tree | 82a5c2719301bcb9f20b0597b77e91529f9ec2df /kernel/rcutree.c | |
| parent | rcu: Add "notrace" to RCU function headers used by ftrace (diff) | |
| download | linux-dev-33f76148ced0e0618062e302d2a9614efdbd4a06.tar.xz linux-dev-33f76148ced0e0618062e302d2a9614efdbd4a06.zip | |
rcu: Add CPU-offline processing for single-node configurations
Add preemptable-RCU plugin to handle the CPU-offline
processing.
An additional plugin is forthcoming to handle multinode RCU
trees, but this current plugin works for configurations up to
32 CPUs (64 CPUs for 64-bit kernels).
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josht@linux.vnet.ibm.com
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
LKML-Reference: <12511321213336-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/rcutree.c')
| -rw-r--r-- | kernel/rcutree.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index cc0255714075..000b07609876 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -84,6 +84,7 @@ extern long rcu_batches_completed_sched(void); static void cpu_quiet_msk(unsigned long mask, struct rcu_state *rsp, struct rcu_node *rnp, unsigned long flags); static void cpu_quiet_msk_finish(struct rcu_state *rsp, unsigned long flags); +static void __rcu_offline_cpu(int cpu, struct rcu_state *rsp); static void __rcu_process_callbacks(struct rcu_state *rsp, struct rcu_data *rdp); static void __call_rcu(struct rcu_head *head, @@ -920,6 +921,7 @@ static void rcu_offline_cpu(int cpu) { __rcu_offline_cpu(cpu, &rcu_sched_state); __rcu_offline_cpu(cpu, &rcu_bh_state); + rcu_preempt_offline_cpu(cpu); } #else /* #ifdef CONFIG_HOTPLUG_CPU */ |