Re: [PATCH v2] cpufreq: schedutil: Examine the correct CPU when we update util

From: Viresh Kumar
Date: Thu Nov 02 2017 - 23:40:33 EST


On 02-11-17, 12:06, Chris Redpath wrote:
> According to my diff, this was the commit which switched from assigning
> the values directly (and not overwriting the cpu member, which was
> introduced in the other commit you reference) to using a memset and
> clearing the whole struct.

I understand what you want to convey here but the log says something
else according to me. It says:

"Since: 4296f23ed cpufreq: schedutil: Fix per-CPU structure
initialization in sugov_start(), We lost the value of sg_cpu->cpu
which is assigned during sugov_register."

Reading this line it looks like sg_cpu->cpu was screwed up by
4296f23ed, which happened in 4.9. But the sg_cpu->cpu field itself got
added in 4.14 and so I think we should write it differently.

If I were you, I wouldn't mention 4296f23ed here at all but just say
that memset() is clearing the value of sg_cpu->cpu, fix that.

Thanks.

--
viresh