linux-kernel - Re: [PATCH] smp: generic ipi

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Message-ID: <20200520133350.GN317569@hirez.programming.kicks-ass.net>
Date:   Wed, 20 May 2020 15:33:50 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Wojciech Kudla <wk.kernel@...il.com>
Cc:     linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Nadav Amit <namit@...are.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] smp: generic ipi_raise tracepoint

On Wed, May 20, 2020 at 02:17:21PM +0100, Wojciech Kudla wrote:
> Preliminary discussion: https://lkml.org/lkml/2020/5/13/1327

We have bright shiny links like: https://lkml.kernel.org/r/$MSG-ID for
that. they allow me to go find the email in my local archive without
having to use a browser.

> This patch avoids introducing arch-specific trace points by leveraging
> existing definition for ipi_raise.


> +static const char *ipi_reason_missing __tracepoint_string = "";

That is a pretty crap reason ;-)