linux-kernel - Re: [PATCH] MAINTAINERS: Add mmap trace events to MEMORY MAPPING

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Message-Id: <20250412154751.60224-1-sj@kernel.org>
Date: Sat, 12 Apr 2025 08:47:51 -0700
From: SeongJae Park <sj@...nel.org>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>
Cc: SeongJae Park <sj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Jann Horn <jannh@...gle.com>
Subject: Re: [PATCH] MAINTAINERS: Add mmap trace events to MEMORY MAPPING

On Sat, 12 Apr 2025 09:17:21 -0400 "Liam R. Howlett" <Liam.Howlett@...cle.com> wrote:

> * SeongJae Park <sj@...nel.org> [250411 13:47]:
[...]
> > > @@ -15571,6 +15571,7 @@ L:	linux-mm@...ck.org
> > >  S:	Maintained
> > >  W:	http://www.linux-mm.org
> > >  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
> > > +F:	include/trace/events/mmap.h
> > 
> > Should mmap_lock.h also be added here?
> 
> Oh, well..
> 
> mmap_lock.h (include/trace/events/mmap_lock.h) has to do with
> mm/mmap_lock.c, which also isn't listed here.  Both exist for tracing as
> well.
> 
> There is also include/linux/mmap_lock.h, which is the locking itself.
> The mmap lock is used more broadly than just these files: mm/pagewalk.c
> and mm/ksm.c, for instance.
> 
> So I guess that's a more difficult decision.

Makes perfect sense.  Thank you for kindly clarifying this.


Thanks,
SJ

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