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 00:55:07 +0100
> Andreas Schwab <schwab@xxxxxxxxxxxxxx> wrote:
>
>> Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> writes:
>> 
>> > Also, in include/asm-generic/cputime.h we have:
>> >
>> > #define usecs_to_cputime64(__msecs)	nsecs_to_jiffies64((__msecs) * 1000)
>> >
>> > But it would be neater to have used nsecs_to_cputime64(), surely.
>> 
>> The procfs interface wants to convert usecs to cputime64, but generic
>> cputime does not have usecs_to_jiffies64.  Once someone writes the
>> latter it can be used here.
>> 
>
> That doesn't address my suggestion.
>
> I'm saying that this:
>
> #define usecs_to_cputime64(__msecs)	nsecs_to_jiffies64((__msecs) * 1000)
>
> should have instead been
>
> #define usecs_to_cputime64(__msecs)	nsecs_to_cputime64((__msecs) * 1000)

It follows the style of the exitsting definitions.  Generic cputime does
not differentiate between jiffies and cputime, so adding a layer of
indirection only here does not increase clarity, IMHO.

Andreas.

-- 
Andreas Schwab, schwab@xxxxxxxxxxxxxx
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