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| author |   Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2021-04-01 10:21:25 -0700 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2021-04-09 11:34:59 -0400 |
| commit | a6c75eaf11032f4a3d2b3ce2265a194ac6e4a7f0 (patch) | |
| tree | 5cf7e6a63991a81a48d67745e1ac265add8e7b94 /fs/ext4/sysfs.c | |
| parent | ext4: add ability to return parsed options from parse_options (diff) | |
| download | linux-dev-a6c75eaf11032f4a3d2b3ce2265a194ac6e4a7f0.tar.xz linux-dev-a6c75eaf11032f4a3d2b3ce2265a194ac6e4a7f0.zip | |
ext4: add mballoc stats proc file
Add new stats for measuring the performance of mballoc. This patch is
forked from Artem Blagodarenko's work that can be found here:
https://github.com/lustre/lustre-release/blob/master/ldiskfs/kernel_patches/patches/rhel8/ext4-simple-blockalloc.patch
This patch reorganizes the stats by cr level. This is how the output
looks like:
mballoc:
reqs: 0
success: 0
groups_scanned: 0
cr0_stats:
hits: 0
groups_considered: 0
useless_loops: 0
bad_suggestions: 0
cr1_stats:
hits: 0
groups_considered: 0
useless_loops: 0
bad_suggestions: 0
cr2_stats:
hits: 0
groups_considered: 0
useless_loops: 0
cr3_stats:
hits: 0
groups_considered: 0
useless_loops: 0
extents_scanned: 0
goal_hits: 0
2^n_hits: 0
breaks: 0
lost: 0
buddies_generated: 0/40
buddies_time_used: 0
preallocated: 0
discarded: 0
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20210401172129.189766-4-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/sysfs.c')
| -rw-r--r-- | fs/ext4/sysfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c index 7367ba406e01..1b5580eb88e6 100644 --- a/fs/ext4/sysfs.c +++ b/fs/ext4/sysfs.c @@ -530,6 +530,8 @@ int ext4_register_sysfs(struct super_block *sb) ext4_fc_info_show, sb); proc_create_seq_data("mb_groups", S_IRUGO, sbi->s_proc, &ext4_mb_seq_groups_ops, sb); + proc_create_single_data("mb_stats", 0444, sbi->s_proc, + ext4_seq_mb_stats_show, sb); } return 0; } |