linux-kernel - Re: [PATCH] fgraph: Use CPU hotplug mechanism to initialize idle shadow stacks

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Message-ID: <20241024213003.6e27de6b@rorschach.local.home>
Date: Thu, 24 Oct 2024 21:30:03 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux trace kernel
 <linux-trace-kernel@...r.kernel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Mark Rutland <mark.rutland@....com>,
 Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] fgraph: Use CPU hotplug mechanism to initialize idle
 shadow stacks

On Mon, 21 Oct 2024 14:58:10 +0900
Masami Hiramatsu (Google) <mhiramat@...nel.org> wrote:

> > +	if (!fgraph_initialized) {
> > +		ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "fgraph_idle_init",  
> 
> Nit: Maybe it is better to call it as "tracing/fgraph:online" ?

I'm going to call it "fgraph:online" as it's not technically tracing.

I'll also add it to my urgent branch so it gets into 6.12.

-- Steve