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Date: Thu, 1 Feb 2024 10:12:50 -0800
From: Greg KH <gregkh@linuxfoundation.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH] tracing/timerlat: Move hrtimer_init to timerlat_fd open()
Message-ID: <2024020140-santa-bagful-51d8@gregkh>
References: <7324dd3fc0035658c99b825204a66049389c56e3.1706798888.git.bristot@kernel.org>
 <2024020109-duffel-finally-4f0b@gregkh>
 <05c12163-d348-4615-a9e3-f36787629e0e@kernel.org>
 <2024020122-uncombed-moody-a96d@gregkh>
 <20240201130823.36f1da8d@gandalf.local.home>
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In-Reply-To: <20240201130823.36f1da8d@gandalf.local.home>

On Thu, Feb 01, 2024 at 01:08:23PM -0500, Steven Rostedt wrote:
> On Thu, 1 Feb 2024 10:05:59 -0800
> Greg KH <gregkh@linuxfoundation.org> wrote:
> 
> > > timerlat_fd = open("/sys/kernel/tracing/osnoise/per_cpu/cpu0/timerlat_fd", 'r')
> > > timerlat_fd.close();
> > > 
> > > # ./taskset -c 0 ./timerlat_load.py
> > > <BOOM>  
> > 
> > Then obviously, this is a real, functional, change, so say so in the
> > kernel changelog :)
> 
> I've updated the change log to remove that comment and add the reproducer.

And cc: stable properly?  thanks!