linux-kernel - [PATCH 00/11] timer: Reduce timers softirq v3

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Message-Id: <20200717140551.29076-1-frederic@kernel.org>
Date:   Fri, 17 Jul 2020 16:05:39 +0200
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Anna-Maria Behnsen <anna-maria@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>
Subject: [PATCH 00/11] timer: Reduce timers softirq v3

This set piggybacks the 3 patches that have been posted seperately
along the reviews.

Changes since v2:

1) Add "timer: Fix wheel index calculation on last level"
   This one targets timers/urgent

2) Add "timer: Preserve higher bits of expiration on index calculation"
       "timer: Move trigger_dyntick_cpu() to enqueue_timer()"

3) Rebase the series against the whole

4) Fix comments in "timer: Move trigger_dyntick_cpu() to enqueue_timer()"
   as per Anna Maria's suggestion

5) Fix comments in "timer: Add comments about calc_index() ceiling work"
   as per Thomas' suggestion

Please pull the timers/softirq-v3 branch that can be found at:

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
	timers/softirq-v3

HEAD: f176eb2a146b422f78d81ec63273487c33b3011d

Thanks,
	Frederic
---

Frederic Weisbecker (11):
      timer: Fix wheel index calculation on last level
      timer: Preserve higher bits of expiration on index calculation
      timer: Move trigger_dyntick_cpu() to enqueue_timer()
      timer: Add comments about calc_index() ceiling work
      timer: Optimize _next_timer_interrupt() level iteration
      timers: Always keep track of next expiry
      timer: Reuse next expiry cache after nohz exit
      timer: Expand clk forward logic beyond nohz
      timer: Spare timer softirq until next expiry
      timer: Remove must_forward_clk
      timer: Lower base clock forwarding threshold

Anna-Maria Behnsen (1):
      timers: Use only bucket expiry for base->next_expiry value


 kernel/time/timer.c | 236 ++++++++++++++++++++--------------------------------
 1 file changed, 92 insertions(+), 144 deletions(-)