diff options
| author | Christoph Hellwig <[email protected]> | 2010-10-10 05:36:23 -0400 |
|---|---|---|
| committer | Al Viro <[email protected]> | 2010-10-25 21:26:12 -0400 |
| commit | 312d3ca856d369bb04d0443846b85b4cdde6fa8a (patch) | |
| tree | cf95d01cffaf02bf53c2bb0f7c2c924279ec6eeb /tools/perf/scripts/python/sched-migration.py | |
| parent | 9c82ab9c9e16cb9edf17bd0d31f3d6904afce04f (diff) | |
fs: use percpu counter for nr_dentry and nr_dentry_unused
The nr_dentry stat is a globally touched cacheline and atomic operation
twice over the lifetime of a dentry. It is used for the benfit of userspace
only. Turn it into a per-cpu counter and always decrement it in d_free instead
of doing various batching operations to reduce lock hold times in the callers.
Based on an earlier patch from Nick Piggin <[email protected]>.
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sched-migration.py')
0 files changed, 0 insertions, 0 deletions