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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-02-26 16:38:56 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-02-27 09:53:52 +0100 |
| commit | a47cd880b50e14b0b6f5e9d426ae9a2676c9c474 (patch) | |
| tree | c134dcec52450ec92ea853f4aeeef8e3967a36cb /kernel/rcutree.h | |
| parent | f5f654096487c6d526c47bb66308f9de81f091cf (diff) | |
| download | lwn-a47cd880b50e14b0b6f5e9d426ae9a2676c9c474.tar.gz lwn-a47cd880b50e14b0b6f5e9d426ae9a2676c9c474.zip | |
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.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h index 2ceb08388582..1439eb504c22 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 */ |