linux-kernel - Re: [PATCH v2] acpi/ghes: Prevent sleeping with spinlock held

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Message-ID: <20240214173318.2be1f3c9@gandalf.local.home>
Date: Wed, 14 Feb 2024 17:33:18 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Ira Weiny <ira.weiny@...el.com>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>, "Rafael J. Wysocki"
 <rafael@...nel.org>, Dan Williams <dan.j.williams@...el.com>, Smita
 Koralahalli <Smita.KoralahalliChannabasappa@....com>,
 <linux-acpi@...r.kernel.org>, <linux-cxl@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, Dan Carpenter <dan.carpenter@...aro.org>,
 Masami Hiramatsu <mhiramat@...nel.org>, "Mathieu Desnoyers"
 <mathieu.desnoyers@...icios.com>, <linux-trace-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] acpi/ghes: Prevent sleeping with spinlock held

On Wed, 14 Feb 2024 14:19:19 -0800
Ira Weiny <ira.weiny@...el.com> wrote:

> > > Jonathan Cameron <Jonathan.Cameron@...wei.com> wrote:
> > >   
> > > > So I'm thinking this is a won't fix - wait for the printk rework to land and
> > > > assume this will be resolved as well?    
> > > 
> > > That pretty much sums up what I was about to say ;-)
> > > 
> > > tp_printk is more of a hack and not to be used sparingly. With the right
> > > trace events it can hang the machine.
> > > 
> > > So, you can use your internal patch locally, but I would recommend waiting
> > > for the new printk changes to land.  
> 
> Steven, Do you think that will land in 6.9?
> 
> > >
> > > I'm really hoping that will be soon!
> > > 

I may be like Jon Corbet predicting RT will land in mainline if I do.

-- Steve