Subject: + kernel-padatac-register-hotcpu-notifier-after-initialization.patch added to -mm tree
To: richard@xxxxxx,herbert@xxxxxxxxxxxxxxxxxxx,steffen.klassert@xxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 26 Aug 2013 14:55:05 -0700
The patch titled
Subject: kernel/padata.c: register hotcpu notifier after initialization
has been added to the -mm tree. Its filename is
kernel-padatac-register-hotcpu-notifier-after-initialization.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernel-padatac-register-hotcpu-notifier-after-initialization.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernel-padatac-register-hotcpu-notifier-after-initialization.patch
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------------------------------------------------------
From: Richard Weinberger <richard@xxxxxx>
Subject: kernel/padata.c: register hotcpu notifier after initialization
padata_cpu_callback() takes pinst->lock, to avoid taking an uninitialized
lock, register the notifier after it's initialization.
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Cc: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/padata.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff -puN kernel/padata.c~kernel-padatac-register-hotcpu-notifier-after-initialization kernel/padata.c
--- a/kernel/padata.c~kernel-padatac-register-hotcpu-notifier-after-initialization
+++ a/kernel/padata.c
@@ -1086,18 +1086,18 @@ struct padata_instance *padata_alloc(str
pinst->flags = 0;
-#ifdef CONFIG_HOTPLUG_CPU
- pinst->cpu_notifier.notifier_call = padata_cpu_callback;
- pinst->cpu_notifier.priority = 0;
- register_hotcpu_notifier(&pinst->cpu_notifier);
-#endif
-
put_online_cpus();
BLOCKING_INIT_NOTIFIER_HEAD(&pinst->cpumask_change_notifier);
kobject_init(&pinst->kobj, &padata_attr_type);
mutex_init(&pinst->lock);
+#ifdef CONFIG_HOTPLUG_CPU
+ pinst->cpu_notifier.notifier_call = padata_cpu_callback;
+ pinst->cpu_notifier.priority = 0;
+ register_hotcpu_notifier(&pinst->cpu_notifier);
+#endif
+
return pinst;
err_free_masks:
_
Patches currently in -mm which might be from richard@xxxxxx are
kernel-padatac-register-hotcpu-notifier-after-initialization.patch
linux-next.patch
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