From: Andrew Morton <akpm@osdl.org>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
davem@davemloft.net, jmorris@redhat.com
Subject: Re: [CRYPTO]: Only reschedule if !in_atomic()
Date: Mon, 23 May 2005 19:31:16 -0700 [thread overview]
Message-ID: <20050523193116.62844826.akpm@osdl.org> (raw)
In-Reply-To: <20050524022106.GA29081@gondor.apana.org.au>
Herbert Xu <herbert@gondor.apana.org.au> wrote:
>
> Perhaps we should code this into the crypto API instead? For instance,
> we can have a tfm flag that says whether we can sleep or not.
Are you sure it's actually needed? Have significant scheduling latencies
actually been observed?
Bear in mind that anyone who cares a lot about latency will be running
CONFIG_PREEMPT kernels, in which case the whole thing is redundant anyway.
I generally take the position that if we're going to put a scheduling point
into a non-premept kernel then it'd better be for a pretty bad latency
point - more than 10 milliseconds, say.
next prev parent reply other threads:[~2005-05-24 2:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200505232300.j4NN07lE012726@hera.kernel.org>
2005-05-23 23:28 ` Andrew Morton
2005-05-23 23:58 ` Benjamin Herrenschmidt
2005-05-24 0:24 ` Andrew Morton
2005-05-24 2:21 ` Herbert Xu
2005-05-24 2:31 ` Andrew Morton [this message]
2005-05-24 2:43 ` Herbert Xu
2005-05-24 3:20 ` James Morris
2005-05-24 3:50 ` Herbert Xu
2005-05-24 13:32 ` Bill Davidsen
[not found] ` <20050523.193612.08320356.davem@davemloft.net>
2005-05-24 3:47 ` Herbert Xu
2005-05-24 6:40 ` Arjan van de Ven
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050523193116.62844826.akpm@osdl.org \
--to=akpm@osdl.org \
--cc=davem@davemloft.net \
--cc=herbert@gondor.apana.org.au \
--cc=jmorris@redhat.com \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®