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From 52563d02a9234215b62c5f519aa1b5d8589ccd0a Mon Sep 17 00:00:00 2001
From: Michael Jeanson <mjeanson@efficios.com>
Date: Mon, 24 Aug 2020 15:37:50 -0400
Subject: [PATCH 05/10] =?UTF-8?q?fix:=20ext4:=20indicate=20via=20a=20block?=
=?UTF-8?q?=20bitmap=20read=20is=20prefetched=E2=80=A6=20(v5.9)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
See upstream commit:
commit ab74c7b23f3770935016e3eb3ecdf1e42b73efaa
Author: Theodore Ts'o <tytso@mit.edu>
Date: Wed Jul 15 11:48:55 2020 -0400
ext4: indicate via a block bitmap read is prefetched via a tracepoint
Modify the ext4_read_block_bitmap_load tracepoint so that it tells us
whether a block bitmap is being prefetched.
Upstream-Status: Backport
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I0e5e2c5b8004223d0928235c092449ee16a940e1
---
instrumentation/events/lttng-module/ext4.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/instrumentation/events/lttng-module/ext4.h b/instrumentation/events/lttng-module/ext4.h
index 72ad4c9..4476abb 100644
--- a/instrumentation/events/lttng-module/ext4.h
+++ b/instrumentation/events/lttng-module/ext4.h
@@ -893,12 +893,26 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(ext4__bitmap_load, ext4_mb_buddy_bitmap_load,
TP_ARGS(sb, group)
)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0))
+LTTNG_TRACEPOINT_EVENT(ext4_read_block_bitmap_load,
+ TP_PROTO(struct super_block *sb, unsigned long group, bool prefetch),
+
+ TP_ARGS(sb, group, prefetch),
+
+ TP_FIELDS(
+ ctf_integer(dev_t, dev, sb->s_dev)
+ ctf_integer(__u32, group, group)
+ ctf_integer(bool, prefetch, prefetch)
+ )
+)
+#else
LTTNG_TRACEPOINT_EVENT_INSTANCE(ext4__bitmap_load, ext4_read_block_bitmap_load,
TP_PROTO(struct super_block *sb, unsigned long group),
TP_ARGS(sb, group)
)
+#endif
LTTNG_TRACEPOINT_EVENT_INSTANCE(ext4__bitmap_load, ext4_load_inode_bitmap,
--
2.19.1
|
