Re: [PATCH v2] s390/cpum_sf: Remove superfluous SMP function call

[Heiko Carstens]

On Mon, May 02, 2016 at 11:00:12AM +0200, Anna-Maria Gleixner wrote:
> Since commit 3b9d6da67e11 ("cpu/hotplug: Fix rollback during error-out
> in __cpu_disable()") it is ensured that callbacks of CPU_ONLINE and
> CPU_DOWN_PREPARE are processed on the hotplugged CPU. Due to this SMP
> function calls are no longer required.
> 
> Replace smp_call_function_single() with a direct call of
> setup_pmc_cpu(). To keep the calling convention, interrupts are
> explicitly disabled around the call.
> 
> Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
> Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
> Cc: linux-s390@xxxxxxxxxxxxxxx
> Signed-off-by: Anna-Maria Gleixner <anna-maria@xxxxxxxxxxxxx>
> ---
> Changes in v2:
> 	- Adapt referenced commit in commit message
> 
>  arch/s390/kernel/perf_cpum_sf.c |    9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)

Acked-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>

Same here: Martin, can you pick this one up, please?