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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2013-09-08 11:51:06 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2013-09-25 06:44:56 -0700
commitf9ffc31ebd38d2d74dbfe9f0b67274e99ad668f5 (patch)
treeeb6d7441e41646201b767cfc638afa18c59c81c5 /kernel/rcutree.c
parentcc6783f788d8fe8b23ec6fc2762f5e8c9a418eee (diff)
downloadop-kernel-dev-f9ffc31ebd38d2d74dbfe9f0b67274e99ad668f5.zip
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rcu: Change EXPORT_SYMBOL() to EXPORT_SYMBOL_GPL()
Commit e6b80a3b (rcu: Detect illegal rcu dereference in extended quiescent state) exported the pre-existing rcu_is_cpu_idle() function using EXPORT_SYMBOL(). However, this is inconsistent with the remaining exports from RCU, which are all EXPORT_SYMBOL_GPL(). The current state of affairs means that a non-GPL module could use rcu_is_cpu_idle(), but in a CONFIG_TREE_PREEMPT_RCU=y kernel would be unable to invoke rcu_read_lock() and rcu_read_unlock(). This commit therefore makes rcu_is_cpu_idle()'s export be consistent with the rest of RCU, namely EXPORT_SYMBOL_GPL(). Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree.c')
-rw-r--r--kernel/rcutree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 910d868..1b123e1 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -669,7 +669,7 @@ int rcu_is_cpu_idle(void)
preempt_enable();
return ret;
}
-EXPORT_SYMBOL(rcu_is_cpu_idle);
+EXPORT_SYMBOL_GPL(rcu_is_cpu_idle);
/**
* __rcu_is_watching - are RCU read-side critical sections safe?
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