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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-05-30 20:11:24 +0300
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-07-23 01:26:58 +0300
commit24560056de61d86153cecb84d04e4237437f5888 (patch)
tree4674113128e446afb740fcc1d45d7fbd64dcff1f /include/linux/rcutree.h
parentf765d1130700878c2275bc1ea09eed428f870a2a (diff)
downloadlinux-24560056de61d86153cecb84d04e4237437f5888.tar.xz
rcu: Add RCU-sched flavors of get-state and cond-sync
The get_state_synchronize_rcu() and cond_synchronize_rcu() functions allow polling for grace-period completion, with an actual wait for a grace period occurring only when cond_synchronize_rcu() is called too soon after the corresponding get_state_synchronize_rcu(). However, these functions work only for vanilla RCU. This commit adds the get_state_synchronize_sched() and cond_synchronize_sched(), which provide the same capability for RCU-sched. Reported-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/rcutree.h')
-rw-r--r--include/linux/rcutree.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 456879143f89..5abec82f325e 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -76,6 +76,8 @@ void rcu_barrier_bh(void);
void rcu_barrier_sched(void);
unsigned long get_state_synchronize_rcu(void);
void cond_synchronize_rcu(unsigned long oldstate);
+unsigned long get_state_synchronize_sched(void);
+void cond_synchronize_sched(unsigned long oldstate);
extern unsigned long rcutorture_testseq;
extern unsigned long rcutorture_vernum;