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Message-ID: <9a8748490601221238t318e483g9b0013f5cb7a85ce@mail.gmail.com>
Date: Sun, 22 Jan 2006 21:38:22 +0100
From: Jesper Juhl <jesper.juhl@gmail.com>
To: Olaf Hering <olh@suse.de>
Subject: Re: [PATCH] disable per cpu intr in /proc/stat
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
In-Reply-To: <20060122202204.GA26295@suse.de>
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On 1/22/06, Olaf Hering <olh@suse.de> wrote:
> (No bugzilla or benchmark)
>
> From: schwab@suse.de
> Subject: Reading /proc/stat is slooow
>
> Don't compute and display the per-irq sums on ia64 either, too much
> overhead for mostly useless figures.
>
> --- linux-2.6.14/fs/proc/proc_misc.c.~1~        2005-12-06 18:12:28.840059961 +0100
> +++ linux-2.6.14/fs/proc/proc_misc.c    2005-12-06 18:13:51.211896515 +0100
> @@ -498,7 +498,7 @@ static int show_stat(struct seq_file *p,
>         }
>         seq_printf(p, "intr %llu", (unsigned long long)sum);
>
> -#if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA)
> +#if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
>         for (i = 0; i < NR_IRQS; i++)
>                 seq_printf(p, " %u", kstat_irqs(i));
>  #endif

Hmm, this changes userspace visible data... should we be doing that?

--
Jesper Juhl <jesper.juhl@gmail.com>
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