Re: [resend PATCH for 3.2] procfs: do not confuse jiffies with cputime64_t

[Andreas Schwab]

Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> writes:

> On Thu, 22 Dec 2011 01:14:39 +0100
> Andreas Schwab <schwab@xxxxxxxxxxxxxx> wrote:
>
>> > a) what effect does this problem have upon users of the kernel?
>> 
>> get_idle_time returns the value in the wrong unit.
>
> So the "idle" fields in /proc/stat are wrong.
>
> We're getting there!  Now, in what way are they wrong?

They use the wrong unit, off by the factor between jiffies and cputime.

> How could a kernel maintainer recognise that this patch is needed?

By running the kernel on one of the architectures that are affected (did
I already say that on most architectures jiffies and cputime are
equivalent?).

Andreas.

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