From: Andrew Morton <akpm@osdl.org>
To: David Miller <davem@davemloft.net>
Cc: axboe@suse.de, linux-kernel@vger.kernel.org
Subject: Re: softirq considered harmful
Date: Sat, 12 Aug 2006 17:45:49 -0700 [thread overview]
Message-ID: <20060812174549.9a8f8aeb.akpm@osdl.org> (raw)
In-Reply-To: <20060812.174324.77324010.davem@davemloft.net>
On Sat, 12 Aug 2006 17:43:24 -0700 (PDT)
David Miller <davem@davemloft.net> wrote:
> From: Andrew Morton <akpm@osdl.org>
> Date: Sat, 12 Aug 2006 16:28:57 -0700
>
> > Maybe I missed the discussion. But if not, this is yet another case of
> > significant changes getting into mainline via a git merge and sneaking
> > under everyone's radar.
>
> Scsi has been doing command completions via a per-cpu softirq handler
> for as long as we've had an SMP more advanced than lock_kernel() :-)
Is that also adding 150 usecs to each IO operation?
next prev parent reply other threads:[~2006-08-13 0:45 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-10 11:06 Jens Axboe
2006-08-10 11:41 ` David Miller
2006-08-10 12:26 ` Jens Axboe
2006-08-12 23:28 ` Andrew Morton
2006-08-13 0:43 ` David Miller
2006-08-13 0:45 ` Andrew Morton [this message]
2006-08-13 1:09 ` David Miller
2006-08-13 1:22 ` Andrew Morton
2006-08-14 7:37 ` Jens Axboe
2006-08-14 8:44 ` David Miller
2006-08-14 8:51 ` Jens Axboe
2006-08-14 7:34 ` Jens Axboe
2006-08-13 14:31 ` Jens Axboe
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