From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
tglx@linutronix.de, mingo@kernel.org, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
bsegall@google.com, mgorman@suse.de, vschneid@redhat.com,
ankur.a.arora@oracle.com, efault@gmx.de,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: Re: [PATCH v2 1/3] tracing: Replace TRACE_FLAG_IRQS_NOSUPPORT with its config option.
Date: Tue, 22 Oct 2024 12:29:06 +0200 [thread overview]
Message-ID: <20241022102906.KNgo1A2_@linutronix.de> (raw)
In-Reply-To: <20241022061959.31775f7a@rorschach.local.home>
On 2024-10-22 06:19:59 [-0400], Steven Rostedt wrote:
> On Tue, 22 Oct 2024 11:52:41 +0200
> Sebastian Andrzej Siewior <bigeasy@linutronix.de> wrote:
>
> > >
> > > Please just remove NOSUPPORT and do not touch NEED_RESCHED.
> >
> > Then I put the lazy bit where we have not NOSUPPORT.
>
> I'm afraid user space will confuse this with the NOSUPPORT.
So? We don't ignore this for now and recycle that bit? If I got it
right, only PPC32 was using that NOSUPPORT bit.
What are the options given that it has to be an 8 bit field?
> -- Steve
Sebastian
next prev parent reply other threads:[~2024-10-22 10:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-21 15:08 [PATCH v2 0/3] Lazy preemption leftovers Sebastian Andrzej Siewior
2024-10-21 15:08 ` [PATCH v2 1/3] tracing: Replace TRACE_FLAG_IRQS_NOSUPPORT with its config option Sebastian Andrzej Siewior
2024-10-22 7:14 ` Steven Rostedt
2024-10-22 9:52 ` Sebastian Andrzej Siewior
2024-10-22 10:19 ` Steven Rostedt
2024-10-22 10:29 ` Sebastian Andrzej Siewior [this message]
2024-10-22 11:01 ` [PATCH] tracing: Remove TRACE_FLAG_IRQS_NOSUPPORT Sebastian Andrzej Siewior
2024-10-21 15:08 ` [PATCH v2 2/3] tracing: Record task flag NEED_RESCHED_LAZY Sebastian Andrzej Siewior
2024-10-22 7:18 ` Steven Rostedt
2024-10-22 7:26 ` Sebastian Andrzej Siewior
2024-10-21 15:08 ` [PATCH v2 3/3] riscv: add PREEMPT_LAZY support Sebastian Andrzej Siewior
2024-11-06 10:48 ` [tip: sched/core] " tip-bot2 for Jisheng Zhang
2024-12-11 22:32 ` [PATCH v2 3/3] " patchwork-bot+linux-riscv
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