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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-02-26 16:38:56 -0800
committerIngo Molnar <mingo@elte.hu>2010-02-27 09:53:52 +0100
commita47cd880b50e14b0b6f5e9d426ae9a2676c9c474 (patch)
treec134dcec52450ec92ea853f4aeeef8e3967a36cb /kernel/rcutree.h
parentf5f654096487c6d526c47bb66308f9de81f091cf (diff)
rcu: Fix accelerated grace periods for last non-dynticked CPU
It is invalid to invoke __rcu_process_callbacks() with irqs disabled, so do it indirectly via raise_softirq(). This requires a state-machine implementation to cycle through the grace-period machinery the required number of times. Located-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com LKML-Reference: <1267231138-27856-1-git-send-email-paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/rcutree.h')
-rw-r--r--kernel/rcutree.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h
index 2ceb0838858..1439eb504c2 100644
--- a/kernel/rcutree.h
+++ b/kernel/rcutree.h
@@ -373,5 +373,6 @@ static int rcu_preempt_needs_cpu(int cpu);
static void __cpuinit rcu_preempt_init_percpu_data(int cpu);
static void rcu_preempt_send_cbs_to_orphanage(void);
static void __init __rcu_init_preempt(void);
+static void rcu_needs_cpu_flush(void);
#endif /* #ifndef RCU_TREE_NONCORE */