linux-kernel - Re: [PATCH V3 4/4] Sched: Add tracepoint for sched time slice extension

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Message-ID: <20250502110210.rZX1iHcg@linutronix.de>
Date: Fri, 2 May 2025 13:02:10 +0200
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Prakash Sangappa <prakash.sangappa@...cle.com>,
	linux-kernel@...r.kernel.org, rostedt@...dmis.org,
	mathieu.desnoyers@...icios.com, tglx@...utronix.de,
	kprateek.nayak@....com
Subject: Re: [PATCH V3 4/4] Sched: Add tracepoint for sched time slice
 extension

On 2025-05-02 11:14:34 [+0200], Peter Zijlstra wrote:
> This is horrific coding style. But really why do we need this? I'm not,
> in general, a fan of tracepoints.

I suggested a tracepoint so that we see why the NEED_RESCHED flag
disappeared. The trace would show a wakeup, the need_resched flag would
be set and the flag would disappear without an explanation.

Sebastian