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authorSteffen Klassert <steffen.klassert@secunet.com>2010-05-19 13:45:35 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2010-05-19 13:45:35 +1000
commit3789ae7dcd29fa146b23dc30377925d1f73c8adf (patch)
tree39f4bc70ccbfafa9290f21bc23bbf296d8656538 /kernel/padata.c
parent0198ffd135f51d4fbb0c50036395716c06632ed9 (diff)
downloadlwn-3789ae7dcd29fa146b23dc30377925d1f73c8adf.tar.gz
lwn-3789ae7dcd29fa146b23dc30377925d1f73c8adf.zip
padata: Use get_online_cpus/put_online_cpus in padata_free
Add get_online_cpus/put_online_cpus to ensure that no cpu goes offline during the flushing of the padata percpu queues. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel/padata.c')
-rw-r--r--kernel/padata.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/padata.c b/kernel/padata.c
index ca89dfb69805..b1c9857f8402 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -763,7 +763,10 @@ void padata_free(struct padata_instance *pinst)
#ifdef CONFIG_HOTPLUG_CPU
unregister_hotcpu_notifier(&pinst->cpu_notifier);
#endif
+ get_online_cpus();
padata_flush_queues(pinst->pd);
+ put_online_cpus();
+
padata_free_pd(pinst->pd);
free_cpumask_var(pinst->cpumask);
kfree(pinst);