linux-kernel - Re: [PATCH] tracing/timerlat: Move hrtimer_init to timerlat

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Message-ID: <20240201130823.36f1da8d@gandalf.local.home>
Date: Thu, 1 Feb 2024 13:08:23 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: Daniel Bristot de Oliveira <bristot@...nel.org>, Masami Hiramatsu
 <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH] tracing/timerlat: Move hrtimer_init to timerlat_fd
 open()

On Thu, 1 Feb 2024 10:05:59 -0800
Greg KH <gregkh@...uxfoundation.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.

-- Steve