Re: [PATCH 04/15] perf, x86: Use context switch callback to flushLBR stack

From: Ingo Molnar
Date: Tue Dec 17 2013 - 11:10:31 EST



* Yan, Zheng <zheng.z.yan@xxxxxxxxx> wrote:

> From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>
>
> Enable pmu context switch callback if LBR is used. Use the callback
> to flush LBR stack when process is scheduled in.
>
> Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>

I see several fundamental problems with your series:

1)

Minimal changelogs like the ones in this series are completely
unacceptable! You seem to be copying the changelog style of Andi
Kleen: written to inform as little as possible.

Don't do that if you want your patches to get anywhere, instead adapt
the akpm style:

"Please update the changelog to describe the current behavior.

Please also describe why you think that behavior should be changed.
ie: what's the reason for this patch.
"

2)

Also, there are frequent typos.

3)

Plus you didn't Cc: other perf maintainers like myself or Arnaldo.

4)

How can users actually make use of the changes you are doing? Cite
actual perf analysis usecases in the 0/15 description and describe how
your patches improve/enable all that.

Please fix all those problems and resend.

Thanks,

Ingo
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