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authorDavid S. Miller <davem@davemloft.net>2009-03-04 23:59:54 -0800
committerDavid S. Miller <davem@davemloft.net>2009-03-04 23:59:54 -0800
commit77827a7cf3aa415f8afec6d9d0537dda8de90ef1 (patch)
tree503ab81e2b997e3625360b380f1cd18f923a6454 /include/linux/rcuclassic.h
parent9d40bbda599def1e1d155d7f7dca14fe8744bd2b (diff)
parent559595a985e106d2fa9f0c79b7f5805453fed593 (diff)
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Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'include/linux/rcuclassic.h')
-rw-r--r--include/linux/rcuclassic.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/rcuclassic.h b/include/linux/rcuclassic.h
index f3f697d..80044a4 100644
--- a/include/linux/rcuclassic.h
+++ b/include/linux/rcuclassic.h
@@ -181,4 +181,10 @@ extern long rcu_batches_completed_bh(void);
#define rcu_enter_nohz() do { } while (0)
#define rcu_exit_nohz() do { } while (0)
+/* A context switch is a grace period for rcuclassic. */
+static inline int rcu_blocking_is_gp(void)
+{
+ return num_online_cpus() == 1;
+}
+
#endif /* __LINUX_RCUCLASSIC_H */