From: Thomas Gleixner <tglx@linutronix.de>
To: Frederic Weisbecker <frederic@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Anna-Maria Gleixner <anna-maria@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>
Subject: Re: [RFC PATCH 10/10] timer: Lower base clock forwarding threshold
Date: Fri, 03 Jul 2020 11:13:18 +0200 [thread overview]
Message-ID: <87pn9drmfl.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20200703001219.GD27417@lenoir>
Frederic Weisbecker <frederic@kernel.org> writes:
> On Thu, Jul 02, 2020 at 05:14:23PM +0200, Thomas Gleixner wrote:
>>
>> The reason for this < 2 is historical and goes back to the oddities of
>> the original timer wheel before the big rewrite.
>
> Ok. And is it still needed today or can we now forward even with a 1 delta?
I haven't found anything which requires it. But be aware of dragons ....
prev parent reply other threads:[~2020-07-03 9:13 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 1:10 [RFC PATCH 00/10] timer: Reduce timers softirq (and other optimizations) Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 01/10] timer: Prevent base->clk from moving backward Frederic Weisbecker
2020-07-01 16:35 ` Juri Lelli
2020-07-01 23:20 ` Frederic Weisbecker
2020-07-02 9:59 ` Juri Lelli
2020-07-02 14:04 ` Frederic Weisbecker
2020-07-02 14:32 ` Frederic Weisbecker
2020-07-02 15:57 ` Juri Lelli
2020-07-02 9:48 ` Thomas Gleixner
2020-07-01 1:10 ` [RFC PATCH 02/10] timer: Move trigger_dyntick_cpu() to enqueue_timer() Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 03/10] timer: Simplify LVL_START() and calc_index() Frederic Weisbecker
2020-07-02 11:59 ` Thomas Gleixner
2020-07-02 12:27 ` Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 04/10] timer: Optimize _next_timer_interrupt() level iteration Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 05/10] timers: Always keep track of next expiry Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 06/10] timer: Reuse next expiry cache after nohz exit Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 07/10] timer: Expand clk forward logic beyond nohz Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 08/10] timer: Spare timer softirq until next expiry Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 09/10] timer: Remove must_forward_clk Frederic Weisbecker
2020-07-01 1:10 ` [RFC PATCH 10/10] timer: Lower base clock forwarding threshold Frederic Weisbecker
2020-07-02 13:21 ` Thomas Gleixner
2020-07-02 13:32 ` Frederic Weisbecker
2020-07-02 15:14 ` Thomas Gleixner
2020-07-03 0:12 ` Frederic Weisbecker
2020-07-03 9:13 ` Thomas Gleixner [this message]
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=87pn9drmfl.fsf@nanos.tec.linutronix.de \
--to=tglx@linutronix.de \
--cc=anna-maria@linutronix.de \
--cc=frederic@kernel.org \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=peterz@infradead.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