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authorWu Fengguang <fengguang.wu@intel.com>2010-08-29 11:28:45 -0600
committerWu Fengguang <fengguang.wu@intel.com>2011-07-09 22:09:02 -0700
commit00821b002df7da867bb2c15b4f83f3706371383f (patch)
treea79cc3e8b5544d337387631eb7ff4c27fee4fe13 /mm/backing-dev.c
parente98be2d599207c6b31e9bb340d52a231b2f3662d (diff)
downloadlinux-00821b002df7da867bb2c15b4f83f3706371383f.tar.gz
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/backing-dev.c')
-rw-r--r--mm/backing-dev.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index a76cdd16027..ddd0345e2e6 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,