ocfs2: Use hrtimer to track ocfs2 fs lock stats

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Patch makes use of the hrtimer to track times in ocfs2 lock stats.

The patch is a bit involved to ensure no additional impact on the memory
footprint. The size of ocfs2_inode_cache remains 1280 bytes on 32-bit systems.

A related change was to modify the unit of the max wait time from nanosec to
microsec allowing us to track max time larger than 4 secs. This change
necessitated the bumping of the output version in the debugfs file,
locking_state, from 2 to 3.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>

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This commit is contained in:

Sunil Mushran 2010-12-28 23:26:03 -08:00 • committed by Joel Becker

parent 0cc9d52578

commit 5bc970e803

2 changed files with 64 additions and 56 deletions

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95

fs/ocfs2/dlmglue.c

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23

fs/ocfs2/ocfs2.h

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