diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-06-13 00:30:25 +0400 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-07-09 20:15:01 +0400 |
| commit | abaa93d9e1de2c29297e69ddba8ddd38f15064cf (patch) | |
| tree | 127f64c80be6f30fed7265d42cbfc5b449853618 /include/linux/elfcore-compat.h | |
| parent | 48bd8e9b82a750b983823f391c67e70553757afa (diff) | |
| download | linux-abaa93d9e1de2c29297e69ddba8ddd38f15064cf.tar.xz | |
rcu: Simplify priority boosting by putting rt_mutex in rcu_node
RCU priority boosting currently checks for boosting via a pointer in
task_struct. However, this is not needed: As Oleg noted, if the
rt_mutex is placed in the rcu_node instead of on the booster's stack,
the boostee can simply check it see if it owns the lock. This commit
makes this change, shrinking task_struct by one pointer and the kernel
by thirteen lines.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/elfcore-compat.h')
0 files changed, 0 insertions, 0 deletions