linux-kernel - Re: [PATCH] mm, vmscan, tracing: Use pointer to reclaim

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Date:   Fri, 23 Mar 2018 09:47:53 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
        Mel Gorman <mgorman@...e.de>, Vlastimil Babka <vbabka@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Alexei Starovoitov <ast@...com>
Subject: Re: [PATCH] mm, vmscan, tracing: Use pointer to reclaim_stat struct
 in trace event

On Fri, 23 Mar 2018 14:42:00 +0100
Michal Hocko <mhocko@...nel.org> wrote:

> Yes, the number of parameter is large. struct reclaim_stat is an
> internal stuff so I didn't want to export it. I do not have strong
> objections to add it somewhere tracing can find it though.

The one solution is to pull the tracing file
include/trace/events/vmscan.h into mm/ and have a local header to store
the reclaim_stat structure that both vmscan.h and vmscan.c can
reference.

I'll make a patch once I hear which way Andrey's patches are going.
That way I don't need to do it twice.

-- Steve