mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-03 17:40:04 +00:00
e4be81a2ed
This commit converts get_state_synchronize_rcu(), cond_synchronize_rcu(), get_state_synchronize_sched(), and cond_synchronize_sched() from ->gpnum and ->completed to ->gp_seq. Note that this also introduces a full memory barrier in the already-done paths off cond_synchronize_rcu() and cond_synchronize_sched(), as work with LKMM indicates that the earlier smp_load_acquire() were insufficiently strong in some situations where these two functions were called just as the grace period ended. In such cases, these two functions would not gain the benefit of memory ordering at the end of the grace period. Please note that the performance impact is negligible, as you shouldn't be using either function anywhere near a fastpath in any case. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> |
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| rcu.h | ||
| rcu_segcblist.c | ||
| rcu_segcblist.h | ||
| rcuperf.c | ||
| rcutorture.c | ||
| srcutiny.c | ||
| srcutree.c | ||
| sync.c | ||
| tiny.c | ||
| tree.c | ||
| tree.h | ||
| tree_exp.h | ||
| tree_plugin.h | ||
| update.c | ||