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| author | Wu Fengguang <fengguang.wu@intel.com> | 2010-08-29 19:28:45 +0200 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-07-10 07:09:02 +0200 |
| commit | 00821b002df7da867bb2c15b4f83f3706371383f (patch) | |
| tree | a79cc3e8b5544d337387631eb7ff4c27fee4fe13 /mm | |
| parent | writeback: bdi write bandwidth estimation (diff) | |
| download | linux-00821b002df7da867bb2c15b4f83f3706371383f.tar.xz linux-00821b002df7da867bb2c15b4f83f3706371383f.zip | |
writeback: show bdi write bandwidth in debugfs
Add a "BdiWriteBandwidth" entry and indent others in /debug/bdi/*/stats.
btw, increase digital field width to 10, for keeping the possibly
huge BdiWritten number aligned at least for desktop systems.
Impact: this could break user space tools if they are dumb enough to
depend on the number of white spaces.
CC: Theodore Ts'o <tytso@mit.edu>
CC: Jan Kara <jack@suse.cz>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/backing-dev.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index a76cdd160277..ddd0345e2e6d 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -92,23 +92,25 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v) #define K(x) ((x) << (PAGE_SHIFT - 10)) seq_printf(m, - "BdiWriteback: %8lu kB\n" - "BdiReclaimable: %8lu kB\n" - "BdiDirtyThresh: %8lu kB\n" - "DirtyThresh: %8lu kB\n" - "BackgroundThresh: %8lu kB\n" - "BdiWritten: %8lu kB\n" - "b_dirty: %8lu\n" - "b_io: %8lu\n" - "b_more_io: %8lu\n" - "bdi_list: %8u\n" - "state: %8lx\n", + "BdiWriteback: %10lu kB\n" + "BdiReclaimable: %10lu kB\n" + "BdiDirtyThresh: %10lu kB\n" + "DirtyThresh: %10lu kB\n" + "BackgroundThresh: %10lu kB\n" + "BdiWritten: %10lu kB\n" + "BdiWriteBandwidth: %10lu kBps\n" + "b_dirty: %10lu\n" + "b_io: %10lu\n" + "b_more_io: %10lu\n" + "bdi_list: %10u\n" + "state: %10lx\n", (unsigned long) K(bdi_stat(bdi, BDI_WRITEBACK)), (unsigned long) K(bdi_stat(bdi, BDI_RECLAIMABLE)), K(bdi_thresh), K(dirty_thresh), K(background_thresh), (unsigned long) K(bdi_stat(bdi, BDI_WRITTEN)), + (unsigned long) K(bdi->write_bandwidth), nr_dirty, nr_io, nr_more_io, |