From: Michael Jeanson <mjeanson@efficios.com>
Date: Tue, 21 May 2019 20:33:11 +0000 (-0400)
Subject: fix: mm/vmscan: drop may_writepage and classzone_idx from direct reclaim begin templa... 
X-Git-Tag: v2.12.0-pre~48
X-Git-Url: http://git.lttng.org./?a=commitdiff_plain;h=36ac1139f0864e892b6437b5dd249a471219b1a7;hp=36ac1139f0864e892b6437b5dd249a471219b1a7;p=lttng-modules.git

fix: mm/vmscan: drop may_writepage and classzone_idx from direct reclaim begin template (v5.2)

See upstream commit:

  commit 3481c37ffa1de58ef140d0fe9eabf56305e74666
  Author: Yafang Shao <laoar.shao@gmail.com>
  Date:   Mon May 13 17:19:14 2019 -0700

    mm/vmscan: drop may_writepage and classzone_idx from direct reclaim begin template

    There are three tracepoints using this template, which are
    mm_vmscan_direct_reclaim_begin,
    mm_vmscan_memcg_reclaim_begin,
    mm_vmscan_memcg_softlimit_reclaim_begin.

    Regarding mm_vmscan_direct_reclaim_begin,
    sc.may_writepage is !laptop_mode, that's a static setting, and
    reclaim_idx is derived from gfp_mask which is already show in this
    tracepoint.

    Regarding mm_vmscan_memcg_reclaim_begin,
    may_writepage is !laptop_mode too, and reclaim_idx is (MAX_NR_ZONES-1),
    which are both static value.

    mm_vmscan_memcg_softlimit_reclaim_begin is the same with
    mm_vmscan_memcg_reclaim_begin.

    So we can drop them all.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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