Re: 2.5.59-mm1

From: Andrew Morton (
Date: Fri Jan 17 2003 - 04:06:58 EST

Anton Blanchard <> wrote:
> > -cputimes_stat.patch
> >
> > Not to Linus's taste.
> Pity, I just had another reason to use this today (Checking if a network
> app was locking itself down to a cpu)

You can query that with sched_getaffinity()

> > -lockless-current_kernel_time.patch
> >
> > Is ia32-only.
> We can fix that. Ive been avoiding it because it will take some non
> trivial cleanup of our ppc64 time.c. Based on how often get_current_time
> is appearing in profiles

Have you some numbers handy?

> and also how gettimeofday has been known to
> cause problems on large SMP (due to read_lock on xtime starving
> write_lock in the timer irq) I think this should get merged.

OK. I've had basically zero success getting non-ia32 people to test these
patches, and breaking their build won't help that.

But yes, this code needs to go ahead.
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This archive was generated by hypermail 2b29 : Thu Jan 23 2003 - 22:00:15 EST