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From: Andrew Morton <akpm@digeo.com>
To: Anton Blanchard <anton@samba.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: 2.5.59-mm1
Date: Fri, 17 Jan 2003 01:06:58 -0800	[thread overview]
Message-ID: <20030117010658.4900da96.akpm@digeo.com> (raw)
In-Reply-To: <20030117084600.GA26172@krispykreme>

Anton Blanchard <anton@samba.org> 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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  reply	other threads:[~2003-01-17  9:05 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-17  8:24 2.5.59-mm1 Andrew Morton
2003-01-17  8:30 ` 2.5.59-mm1 Andrew Morton
2003-01-17  8:46 ` 2.5.59-mm1 Anton Blanchard
2003-01-17  9:06   ` Andrew Morton [this message]
2003-01-21 14:03 ` 2.5.59-mm1 Bill Davidsen
2003-01-21 17:27   ` 2.5.59-mm1 Andrew Morton

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