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From: Alison Chaiken <>
Subject: remove of ktimersoftd in linux-rt-devel 5.0
Date: Fri, 15 May 2020 16:46:48 -0700
Message-ID: <> (raw)

About a year ago the following commit greatly simplified softirqs:

commit 6f6ba7715a91877cf5fd2b357db3799baa331d9b
Author: Sebastian Andrzej Siewior <>
Date:   Wed May 29 18:47:32 2019 +0200
    softirq: rework

It also removed ktimersoftd, without comment as far as I can see.  Is
it obvious that performance improvements due to lockless
synchronization render useless the earlier split of ktimersoftd from
ksoftirqd?   Is it now less likely that a large number of other
softirqs that are run immediately when hard IRQs terminate will use up
ksoftirqd's time slice and prevent the timer softirqs from getting a
chance to run?

Alison Chaiken
Aurora Innovation

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-15 23:46 Alison Chaiken [this message]
2020-05-26 14:24 ` Sebastian Andrzej Siewior

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