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| author |   Jaegeuk Kim <jaegeuk@kernel.org> | 2014-12-17 19:51:57 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-01-09 17:02:24 -0800 |
| commit | 0e689d036952a6018ed5f5c1aee7697f5c57cea1 (patch) | |
| tree | 122bcbe75e1d313887bf6bf1c51fd4fac54854a7 /fs/f2fs/trace.h | |
| parent | f2fs: add f2fs_io_tracer support (diff) | |
| download | linux-dev-0e689d036952a6018ed5f5c1aee7697f5c57cea1.tar.xz linux-dev-0e689d036952a6018ed5f5c1aee7697f5c57cea1.zip | |
f2fs: add key functions for f2fs_io_tracer
This patch adds two key functions to trace process ids and IOs.
The basic idea is to
1. remain process ids, pids, in page->private.
2. show pids in IO traces.
So, later we can retrieve process information according to IO traces.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/trace.h')
| -rw-r--r-- | fs/f2fs/trace.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/f2fs/trace.h b/fs/f2fs/trace.h index 08856a978d6b..aa6663be528c 100644 --- a/fs/f2fs/trace.h +++ b/fs/f2fs/trace.h @@ -14,6 +14,24 @@ #ifdef CONFIG_F2FS_IO_TRACE #include <trace/events/f2fs.h> +enum file_type { + __NORMAL_FILE, + __DIR_FILE, + __NODE_FILE, + __META_FILE, + __ATOMIC_FILE, + __VOLATILE_FILE, + __MISC_FILE, +}; + +struct last_io_info { + int major, minor; + pid_t pid; + enum file_type type; + struct f2fs_io_info fio; + block_t len; +}; + extern void f2fs_trace_pid(struct page *); extern void f2fs_trace_ios(struct page *, struct f2fs_io_info *, int); #else |