code.ossystems Code Review - openembedded-core.git/blob

   1 From 52563d02a9234215b62c5f519aa1b5d8589ccd0a Mon Sep 17 00:00:00 2001
   2 From: Michael Jeanson <mjeanson@efficios.com>
   3 Date: Mon, 24 Aug 2020 15:37:50 -0400
   4 Subject: [PATCH 05/10] =?UTF-8?q?fix:=20ext4:=20indicate=20via=20a=20block?=
   5  =?UTF-8?q?=20bitmap=20read=20is=20prefetched=E2=80=A6=20(v5.9)?=
   6 MIME-Version: 1.0
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   9
  10 See upstream commit:
  11
  12   commit ab74c7b23f3770935016e3eb3ecdf1e42b73efaa
  13   Author: Theodore Ts'o <tytso@mit.edu>
  14   Date:   Wed Jul 15 11:48:55 2020 -0400
  15
  16     ext4: indicate via a block bitmap read is prefetched via a tracepoint
  17
  18     Modify the ext4_read_block_bitmap_load tracepoint so that it tells us
  19     whether a block bitmap is being prefetched.
  20
  21 Upstream-Status: Backport
  22
  23 Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
  24 Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  25 Change-Id: I0e5e2c5b8004223d0928235c092449ee16a940e1
  26 ---
  27  instrumentation/events/lttng-module/ext4.h | 14 ++++++++++++++
  28  1 file changed, 14 insertions(+)
  29
  30 diff --git a/instrumentation/events/lttng-module/ext4.h b/instrumentation/events/lttng-module/ext4.h
  31 index 72ad4c9..4476abb 100644
  32 --- a/instrumentation/events/lttng-module/ext4.h
  33 +++ b/instrumentation/events/lttng-module/ext4.h
  34 @@ -893,12 +893,26 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(ext4__bitmap_load, ext4_mb_buddy_bitmap_load,
  35         TP_ARGS(sb, group)
  36  )
  37
  38 +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0))
  39 +LTTNG_TRACEPOINT_EVENT(ext4_read_block_bitmap_load,
  40 +       TP_PROTO(struct super_block *sb, unsigned long group, bool prefetch),
  41 +
  42 +       TP_ARGS(sb, group, prefetch),
  43 +
  44 +       TP_FIELDS(
  45 +               ctf_integer(dev_t, dev, sb->s_dev)
  46 +               ctf_integer(__u32, group, group)
  47 +               ctf_integer(bool, prefetch, prefetch)
  48 +       )
  49 +)
  50 +#else
  51  LTTNG_TRACEPOINT_EVENT_INSTANCE(ext4__bitmap_load, ext4_read_block_bitmap_load,
  52
  53         TP_PROTO(struct super_block *sb, unsigned long group),
  54
  55         TP_ARGS(sb, group)
  56  )
  57 +#endif
  58
  59  LTTNG_TRACEPOINT_EVENT_INSTANCE(ext4__bitmap_load, ext4_load_inode_bitmap,
  60
  61 --
  62 2.19.1
  63