From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: rostedt <rostedt@goodmis.org>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Yafang Shao <laoar.shao@gmail.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Michel Lespinasse <walken@google.com>,
Daniel Jordan <daniel.m.jordan@oracle.com>,
Davidlohr Bueso <dbueso@suse.de>, linux-mm <linux-mm@kvack.org>,
Ingo Molnar <mingo@kernel.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH 1/2] tracepoints: Add helper to test if tracepoint is enabled in a header
Date: Thu, 24 Sep 2020 16:27:34 -0400 (EDT) [thread overview]
Message-ID: <1430794518.69084.1600979254425.JavaMail.zimbra@efficios.com> (raw)
In-Reply-To: <20200924161328.760f5e79@oasis.local.home>
----- On Sep 24, 2020, at 4:13 PM, rostedt rostedt@goodmis.org wrote:
> On Thu, 24 Sep 2020 16:05:35 -0400 (EDT)
> Mathieu Desnoyers <mathieu.desnoyers@efficios.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.
I'd be a bit more specific: so far, the msr.h use-case requires to include
directly tracepoint-defs.h and use a tracepoint_enabled() macro defined there.
Other less "core" header use-cases could still include tracepoint.h, as long as
there is no circular dependency.
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
next prev parent reply other threads:[~2020-09-24 20:27 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-24 17:09 [PATCH 0/2] tracing/mm: Add tracepoint_enabled() helper function for headers Steven Rostedt
2020-09-24 17:09 ` [PATCH 1/2] tracepoints: Add helper to test if tracepoint is enabled in a header Steven Rostedt
2020-09-24 17:42 ` Mathieu Desnoyers
2020-09-24 18:19 ` Axel Rasmussen
2020-09-24 18:27 ` Mathieu Desnoyers
2020-09-24 18:30 ` Steven Rostedt
2020-09-24 19:08 ` Mathieu Desnoyers
2020-09-24 19:35 ` Steven Rostedt
2020-09-24 19:40 ` Steven Rostedt
2020-09-24 20:25 ` Mathieu Desnoyers
2020-09-24 20:05 ` Mathieu Desnoyers
2020-09-24 20:13 ` Steven Rostedt
2020-09-24 20:27 ` Mathieu Desnoyers [this message]
2020-09-24 20:33 ` Steven Rostedt
2020-09-25 14:41 ` Mathieu Desnoyers
2020-09-25 15:14 ` Steven Rostedt
2020-09-25 15:30 ` Mathieu Desnoyers
2020-09-25 16:26 ` Steven Rostedt
2020-09-25 17:05 ` Mathieu Desnoyers
2020-09-24 20:04 ` Axel Rasmussen
2020-09-24 17:09 ` [PATCH 2/2] mm/page_ref: Convert the open coded tracepoint enabled to the new helper Steven Rostedt
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