From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Dmitry Safonov <dima@arista.com>,
open list <linux-kernel@vger.kernel.org>,
Adrian Reber <adrian@lisas.de>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andrei Vagin <avagin@openvz.org>,
Andy Lutomirski <luto@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Oleg Nesterov <oleg@redhat.com>,
Pavel Emelyanov <xemul@virtuozzo.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linux Containers <containers@lists.linux-foundation.org>,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 4/9] select: Micro-optimise __estimate_accuracy()
Date: Mon, 9 Sep 2019 15:14:36 +0300 [thread overview]
Message-ID: <20190909121436.GC1508@uranus> (raw)
In-Reply-To: <CAJwJo6YX2qQit9aTbMhg8L5+JE1EsLzKyNt0a3X97zvJ-O9dNQ@mail.gmail.com>
On Mon, Sep 09, 2019 at 12:50:27PM +0100, Dmitry Safonov wrote:
> Hi Cyrill,
>
> On Mon, 9 Sep 2019 at 12:18, Cyrill Gorcunov <gorcunov@gmail.com> wrote:
> > Compiler precompute constants so it doesn't do division here.
> > But I didn't read the series yet so I might be missing
> > something obvious.
>
> Heh, like a division is in ktime_divns()?
Ah, you meant the ktime_divns you've dropped out. I thought
you were talking about the constant value we've had here before
your patch. Seems I didn't got the changelog right. Anyway
need to take more precise look on the series. Hopefully soon.
next prev parent reply other threads:[~2019-09-09 12:14 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-09 10:23 [PATCH 0/9] restart_block: Prepare the ground for dumping timeout Dmitry Safonov
2019-09-09 10:23 ` [PATCH 1/9] futex: Remove unused uaddr2 in restart_block Dmitry Safonov
2019-09-09 10:23 ` [PATCH 2/9] restart_block: Prevent userspace set part of the block Dmitry Safonov
2019-09-09 10:23 ` [PATCH 3/9] select: Convert __esimate_accuracy() to ktime_t Dmitry Safonov
2019-09-09 10:23 ` [PATCH 4/9] select: Micro-optimise __estimate_accuracy() Dmitry Safonov
2019-09-09 11:18 ` Cyrill Gorcunov
2019-09-09 11:50 ` Dmitry Safonov
2019-09-09 12:14 ` Cyrill Gorcunov [this message]
2019-09-19 14:05 ` Cyrill Gorcunov
2019-09-19 14:25 ` Dmitry Safonov
2019-09-09 10:23 ` [PATCH 5/9] select: Convert select_estimate_accuracy() to take ktime_t Dmitry Safonov
2019-09-09 10:23 ` [PATCH 6/9] select: Extract common code into do_sys_ppoll() Dmitry Safonov
2019-09-09 11:15 ` kbuild test robot
2019-09-09 19:48 ` kbuild test robot
2019-09-09 10:23 ` [PATCH 7/9] select: Use ktime_t in do_sys_poll() and do_poll() Dmitry Safonov
2019-09-09 10:23 ` [PATCH 8/9] select/restart_block: Convert poll's timeout to u64 Dmitry Safonov
2019-09-09 13:07 ` David Laight
2019-09-16 15:19 ` Dmitry Safonov
2019-09-09 10:23 ` [PATCH 9/9] restart_block: Make common timeout Dmitry Safonov
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=20190909121436.GC1508@uranus \
--to=gorcunov@gmail.com \
--cc=0x7f454c46@gmail.com \
--cc=adrian@lisas.de \
--cc=avagin@openvz.org \
--cc=containers@lists.linux-foundation.org \
--cc=dima@arista.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=oleg@redhat.com \
--cc=tglx@linutronix.de \
--cc=viro@zeniv.linux.org.uk \
--cc=xemul@virtuozzo.com \
/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;
as well as URLs for NNTP newsgroup(s).