From: Andrew Morton <akpm@linux-foundation.org>
To: Shawn Bohrer <shawn.bohrer@gmail.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Davide Libenzi <davidel@xmailserver.org>
Subject: Re: [PATCH] hrtimer: make epoll_wait() use the hrtimer range feature
Date: Thu, 26 Aug 2010 15:31:56 -0700 [thread overview]
Message-ID: <20100826153156.9ca92942.akpm@linux-foundation.org> (raw)
In-Reply-To: <1281307532-3235-1-git-send-email-shawn.bohrer@gmail.com>
I'd say this is an epoll patch, not an hrtimer patch. So I renamed it
to "epoll: make epoll_wait() use the hrtimer range feature".
Davide looks after epoll, so let's cc him.
On Sun, 8 Aug 2010 17:45:32 -0500
Shawn Bohrer <shawn.bohrer@gmail.com> wrote:
> This make epoll use hrtimers for the timeout value which prevents
> epoll_wait() from timing out up to a millisecond early.
>
> This mirrors the behavior of select() and poll().
>
> ...
>
> --- a/fs/eventpoll.c
> +++ b/fs/eventpoll.c
Davide stuff ;)
> --- a/fs/select.c
> +++ b/fs/select.c
> @@ -67,7 +67,7 @@ static long __estimate_accuracy(struct timespec *tv)
> return slack;
> }
>
> -static long estimate_accuracy(struct timespec *tv)
> +long estimate_accuracy(struct timespec *tv)
"estimate_accuracy" is a rotten name for a global symbol. I queued a
preparatory patch which renames this to "select_estimate_accuracy".
next prev parent reply other threads:[~2010-08-26 22:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-08 22:45 [PATCH] hrtimer: make epoll_wait() use the hrtimer range feature Shawn Bohrer
2010-08-26 22:31 ` Andrew Morton [this message]
2010-08-26 22:45 ` Davide Libenzi
2010-08-26 23:02 ` Thomas Gleixner
2010-08-26 23:23 ` Davide Libenzi
2010-11-24 8:33 ` Mike Frysinger
2010-11-24 14:52 ` Shawn Bohrer
2010-11-24 20:57 ` Mike Frysinger
2010-11-25 3:31 ` [PATCH] epoll: initialize slack for negative timeout values Shawn Bohrer
2010-11-27 18:58 ` Davide Libenzi
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