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authorChao Yu <chao2.yu@samsung.com>2015-10-12 17:02:26 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2015-10-12 14:00:34 -0700
commitb8c2940048adf4b2fcc5ae738f2bd4821ebf6a8a (patch)
treee72060649cd483751b38400284693b3295ac42ac /include/trace
parenta56c7c6fb3c60857c1335bcb8b914e6f65655486 (diff)
f2fs: add a tracepoint for f2fs_read_data_pages
This patch adds a tracepoint for f2fs_read_data_pages to trace when pages are readahead by VFS. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/f2fs.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 7de751d5763b..00b4a6308249 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -1028,6 +1028,32 @@ TRACE_EVENT(f2fs_writepages,
__entry->for_sync)
);
+TRACE_EVENT(f2fs_readpages,
+
+ TP_PROTO(struct inode *inode, struct page *page, unsigned int nrpage),
+
+ TP_ARGS(inode, page, nrpage),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __field(pgoff_t, start)
+ __field(unsigned int, nrpage)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->start = page->index;
+ __entry->nrpage = nrpage;
+ ),
+
+ TP_printk("dev = (%d,%d), ino = %lu, start = %lu nrpage = %u",
+ show_dev_ino(__entry),
+ (unsigned long)__entry->start,
+ __entry->nrpage)
+);
+
TRACE_EVENT(f2fs_write_checkpoint,
TP_PROTO(struct super_block *sb, int reason, char *msg),

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