f2fs: add tracepoint for f2fs_issue_flush
Jaegeuk Kim [Sat, 26 Jul 2014 00:46:10 +0000 (17:46 -0700)]
This patch adds a tracepoint for f2fs_issue_flush.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/segment.c
include/trace/events/f2fs.h

index a3b1408..68efd1b 100644 (file)
@@ -239,6 +239,9 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi)
        struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info;
        struct flush_cmd cmd;
 
+       trace_f2fs_issue_flush(sbi->sb, test_opt(sbi, NOBARRIER),
+                                       test_opt(sbi, FLUSH_MERGE));
+
        if (test_opt(sbi, NOBARRIER))
                return 0;
 
index 81e131e..c49d86d 100644 (file)
@@ -926,6 +926,30 @@ TRACE_EVENT(f2fs_issue_discard,
                (unsigned long long)__entry->blkstart,
                (unsigned long long)__entry->blklen)
 );
+
+TRACE_EVENT(f2fs_issue_flush,
+
+       TP_PROTO(struct super_block *sb, bool nobarrier, bool flush_merge),
+
+       TP_ARGS(sb, nobarrier, flush_merge),
+
+       TP_STRUCT__entry(
+               __field(dev_t,  dev)
+               __field(bool, nobarrier)
+               __field(bool, flush_merge)
+       ),
+
+       TP_fast_assign(
+               __entry->dev    = sb->s_dev;
+               __entry->nobarrier = nobarrier;
+               __entry->flush_merge = flush_merge;
+       ),
+
+       TP_printk("dev = (%d,%d), %s %s",
+               show_dev(__entry),
+               __entry->nobarrier ? "skip (nobarrier)" : "issue",
+               __entry->flush_merge ? " with flush_merge" : "")
+);
 #endif /* _TRACE_F2FS_H */
 
  /* This part must be outside protection */