linux-kernel - Re: [PATCH v2 2/3] tracing: Record task flag NEED_RESCHED

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Message-ID: <20241022031827.21e70b2b@rorschach.local.home>
Date: Tue, 22 Oct 2024 03:18:27 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-trace-kernel@...r.kernel.org, linux-kernel@...r.kernel.org, Peter
 Zijlstra <peterz@...radead.org>, tglx@...utronix.de, mingo@...nel.org,
 juri.lelli@...hat.com, vincent.guittot@...aro.org,
 dietmar.eggemann@....com, bsegall@...gle.com, mgorman@...e.de,
 vschneid@...hat.com, ankur.a.arora@...cle.com, efault@....de, Masami
 Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>
Subject: Re: [PATCH v2 2/3] tracing: Record task flag NEED_RESCHED_LAZY.

On Mon, 21 Oct 2024 17:08:41 +0200
Sebastian Andrzej Siewior <bigeasy@...utronix.de> wrote:

>  enum trace_flag_type {
>  	TRACE_FLAG_IRQS_OFF		= 0x01,
>  	TRACE_FLAG_NEED_RESCHED		= 0x02,
> +	TRACE_FLAG_NEED_RESCHED_LAZY	= 0x04,
>  	TRACE_FLAG_HARDIRQ		= 0x08,
>  	TRACE_FLAG_SOFTIRQ		= 0x10,
>  	TRACE_FLAG_PREEMPT_RESCHED	= 0x20,

As I stated in the other email, these are user visible. Should probably
make the LAZY flag 0x100, as the trace_flags are 16 bits worth.

-- Steve