linux-kernel - Re: [PATCH 1/2] tracepoints: Add helper to test if tracepoint is enabled in a header

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Message-ID: <20200924161328.760f5e79@oasis.local.home>
Date:   Thu, 24 Sep 2020 16:13:28 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Yafang Shao <laoar.shao@...il.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Michel Lespinasse <walken@...gle.com>,
        Daniel Jordan <daniel.m.jordan@...cle.com>,
        Davidlohr Bueso <dbueso@...e.de>,
        linux-mm <linux-mm@...ck.org>, Ingo Molnar <mingo@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH 1/2] tracepoints: Add helper to test if tracepoint is
 enabled in a header

On Thu, 24 Sep 2020 16:05:35 -0400 (EDT)
Mathieu Desnoyers <mathieu.desnoyers@...icios.com> wrote:

> If headers which happens to be included by include/trace/events/ headers are
> the issue, and they happen to only be needed by CREATE_TRACE_PROBES, then we
> should consider wrapping those #include with #ifdef CREATE_TRACE_PROBES guards.

Well, we are at a point you can't even use preempt_disable().

Whatever wants to use this tracepoint_enabled() macro, is going to have
to include something that doesn't include tracepoint.h.

-- Steve