linux-kernel - Re: [patch V3 07/12] rseq: Implement syscall entry work for time slice extensions

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Message-ID: <21606ff6-1dbc-4a1b-8e51-2670d4a43fc0@efficios.com>
Date: Fri, 31 Oct 2025 15:53:02 -0400
From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
 "Paul E. McKenney" <paulmck@...nel.org>, Boqun Feng <boqun.feng@...il.com>,
 Jonathan Corbet <corbet@....net>,
 Prakash Sangappa <prakash.sangappa@...cle.com>,
 Madadi Vineeth Reddy <vineethr@...ux.ibm.com>,
 K Prateek Nayak <kprateek.nayak@....com>,
 Steven Rostedt <rostedt@...dmis.org>,
 Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 Arnd Bergmann <arnd@...db.de>, linux-arch@...r.kernel.org
Subject: Re: [patch V3 07/12] rseq: Implement syscall entry work for time
 slice extensions

On 2025-10-29 09:22, Thomas Gleixner wrote:
> The kernel sets SYSCALL_WORK_RSEQ_SLICE when it grants a time slice
> extension. This allows to handle the rseq_slice_yield() syscall, which is
> used by user space to relinquish the CPU after finishing the critical
> section for which it requested an extension.

Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com