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| author | Paul E. McKenney <[email protected]> | 2010-12-15 01:36:02 +0000 |
|---|---|---|
| committer | Paul E. McKenney <[email protected]> | 2010-12-17 20:34:49 +0000 |
| commit | b52573d2796274f7f31cfeff7185c320adcd4f12 (patch) | |
| tree | 61580632fa8fbf80225ba7339274ada0c013a01b /lib/dynamic_debug.c | |
| parent | rcu: limit rcu_node leaf-level fanout (diff) | |
| download | kernel-b52573d2796274f7f31cfeff7185c320adcd4f12.tar.gz kernel-b52573d2796274f7f31cfeff7185c320adcd4f12.zip | |
rcu: reduce __call_rcu()-induced contention on rcu_node structures
When the current __call_rcu() function was written, the expedited
APIs did not exist. The __call_rcu() implementation therefore went
to great lengths to detect the end of old grace periods and to start
new ones, all in the name of reducing grace-period latency. Now the
expedited APIs do exist, and the usage of __call_rcu() has increased
considerably. This commit therefore causes __call_rcu() to avoid
worrying about grace periods unless there are a large number of
RCU callbacks stacked up on the current CPU.
Signed-off-by: Paul E. McKenney <[email protected]>
Diffstat (limited to 'lib/dynamic_debug.c')
0 files changed, 0 insertions, 0 deletions