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> |
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Makefile | ||
rcu.h | ||
rcutorture.c | ||
srcu.c | ||
tiny_plugin.h | ||
tiny.c | ||
tree_plugin.h | ||
tree_trace.c | ||
tree.c | ||
tree.h | ||
update.c |