From: Valentin Schneider <vschneid@redhat.com>
To: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Mike Galbraith <efault@gmx.de>,
Peter Collingbourne <pcc@google.com>,
Mark Rutland <mark.rutland@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Neeraj Upadhyay <neeraj.upadhyay@kernel.org>,
Thiago Jung Bauermann <thiago.bauermann@linaro.org>,
Mark Brown <broonie@kernel.org>,
Kristina Martsenko <kristina.martsenko@arm.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Petr Tesarik <ptesarik@suse.com>,
Jinjie Ruan <ruanjinjie@huawei.com>,
Juri Lelli <juri.lelli@redhat.com>, Phil Auld <pauld@redhat.com>
Subject: [PATCH 0/1] arm64: enable PREEMPT_LAZY
Date: Wed, 5 Mar 2025 11:49:24 +0100 [thread overview]
Message-ID: <20250305104925.189198-1-vschneid@redhat.com> (raw)
Hey folks,
This is a resubmission of Mark's patch [1]. I didn't end up changing anything
other than fluffing up the changelog.
I ran this under an arm64 VM, added some trace_printk's and checked that
sched_switch's between runnable hackbench threads would occurr in the right
conditions:
o with TIF_NEED_RESCHED_LAZY set
o at the tick
o at do_notify_resume()
o with TIF_NEED_RESCHED set
[1]: https://lore.kernel.org/linux-rt-users/Z2B5y3HiLuRHPfdv@J2N7QTR9R3.cambridge.arm.com/
Cheers,
Valentin
Mark Rutland (1):
arm64: enable PREEMPT_LAZY
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/thread_info.h | 16 +++++++++-------
arch/arm64/kernel/entry-common.c | 2 +-
3 files changed, 11 insertions(+), 8 deletions(-)
--
2.43.0
next reply other threads:[~2025-03-05 10:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-05 10:49 Valentin Schneider [this message]
2025-03-05 10:49 ` [PATCH 1/1] " Valentin Schneider
2025-03-05 11:06 ` Sebastian Andrzej Siewior
2025-03-05 12:15 ` Mark Rutland
2025-03-06 12:23 ` Petr Tesarik
2025-03-31 9:07 ` Sebastian Andrzej Siewior
2025-04-29 12:45 ` Will Deacon
2025-03-05 12:48 ` Thomas Gleixner
2025-05-07 22:51 ` Paul E. McKenney
2025-03-05 14:03 ` [PATCH 0/1] " Phil Auld
2025-04-29 20:27 ` Will Deacon
2025-04-30 8:38 ` Petr Tesarik
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=20250305104925.189198-1-vschneid@redhat.com \
--to=vschneid@redhat.com \
--cc=bigeasy@linutronix.de \
--cc=broonie@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=efault@gmx.de \
--cc=juri.lelli@redhat.com \
--cc=kristina.martsenko@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=neeraj.upadhyay@kernel.org \
--cc=pauld@redhat.com \
--cc=pcc@google.com \
--cc=ptesarik@suse.com \
--cc=ruanjinjie@huawei.com \
--cc=tglx@linutronix.de \
--cc=thiago.bauermann@linaro.org \
--cc=will@kernel.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
all inboxes | Powered by JetHome®