diff options
| author | Shaohua Li <shaohua.li@intel.com> | 2011-06-17 01:02:54 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-09-29 06:36:34 +0200 |
| commit | 1eb521210a8c9823038abe4ddfe8c69e713ec17d (patch) | |
| tree | f9fc70df7c25f80def12aeb231475405043eb1ed /Documentation/RCU/trace.txt | |
| parent | rcu: Use kthread_create_on_node() (diff) | |
| download | linux-1eb521210a8c9823038abe4ddfe8c69e713ec17d.tar.xz linux-1eb521210a8c9823038abe4ddfe8c69e713ec17d.zip | |
rcu: Avoid unnecessary self-wakeup of per-CPU kthreads
There are a number of cases where the RCU can find additional work
for the per-CPU kthread within the context of that per-CPU kthread.
In such cases, the per-CPU kthread is already running, so attempting
to wake itself up does nothing except waste CPU cycles. This commit
therefore checks to see if it is in the per-CPU kthread context,
omitting the wakeup in this case.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'Documentation/RCU/trace.txt')
0 files changed, 0 insertions, 0 deletions