Re: [patch 4/6] x86, perf, cqm: Avoid pointless msr write

[Matt Fleming]

On Tue, 19 May, at 12:00:55AM, Thomas Gleixner wrote:
> If the usage counter is non-zero there is no point to update the rmid
> in the PQR MSR.
> 
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> ---
>  arch/x86/kernel/cpu/perf_event_intel_cqm.c |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

Good catch.

Acked-by: Matt Fleming <matt.fleming@xxxxxxxxx>

-- 
Matt Fleming, Intel Open Source Technology Center
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/