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| author |   Theodore Ts'o <tytso@mit.edu> | 2010-08-03 21:35:12 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-08-03 21:35:12 -0400 |
| commit | a931da6ac9331a6c80dd91c199105806f2336188 (patch) | |
| tree | 2d4ea766def9a98d21c2379f41e796b0e57ccd6b /tools/perf/scripts/python/sched-migration.py | |
| parent | jbd2: Use atomic variables to avoid taking t_handle_lock in jbd2_journal_stop (diff) | |
| download | linux-dev-a931da6ac9331a6c80dd91c199105806f2336188.tar.xz linux-dev-a931da6ac9331a6c80dd91c199105806f2336188.zip | |
jbd2: Change j_state_lock to be a rwlock_t
Lockstat reports have shown that j_state_lock is a major source of
lock contention, especially on systems with more than 4 CPU cores. So
change it to be a read/write spinlock.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'tools/perf/scripts/python/sched-migration.py')
0 files changed, 0 insertions, 0 deletions