This is a note to let you know that I've just added the patch titled
ARM: 7778/1: smp_twd: twd_update_frequency need be run on all online CPUs
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-7778-1-smp_twd-twd_update_frequency-need-be-run-on-all-online-cpus.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From cbbe6f82b489e7ceba4ad7c833bd3a76cd0084cb Mon Sep 17 00:00:00 2001
From: Jason Liu <r64343@xxxxxxxxxxxxx>
Date: Mon, 1 Jul 2013 09:53:30 +0100
Subject: ARM: 7778/1: smp_twd: twd_update_frequency need be run on all online CPUs
From: Jason Liu <r64343@xxxxxxxxxxxxx>
commit cbbe6f82b489e7ceba4ad7c833bd3a76cd0084cb upstream.
When the local timer freq changed, the twd_update_frequency function
should be run all the CPUs include itself, otherwise, the twd freq will
not get updated and the local timer will not run correcttly.
smp_call_function will run functions on all other CPUs, but not include
himself, this is not correct,use on_each_cpu instead to fix this issue.
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Rob Herring <rob.herring@xxxxxxxxxxx>
Cc: Shawn Guo <shawn.guo@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
Signed-off-by: Jason Liu <r64343@xxxxxxxxxxxxx>
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/kernel/smp_twd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -120,7 +120,7 @@ static int twd_rate_change(struct notifi
* changing cpu.
*/
if (flags == POST_RATE_CHANGE)
- smp_call_function(twd_update_frequency,
+ on_each_cpu(twd_update_frequency,
(void *)&cnd->new_rate, 1);
return NOTIFY_OK;
Patches currently in stable-queue which might be from r64343@xxxxxxxxxxxxx are
queue-3.10/arm-7778-1-smp_twd-twd_update_frequency-need-be-run-on-all-online-cpus.patch
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