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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>
This commit is contained in:
Paul E. McKenney 2013-09-08 11:51:06 -07:00
parent cc6783f788
commit f9ffc31ebd
1 changed files with 1 additions and 1 deletions
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2
kernel/rcutree.c
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@ -669,7 +669,7 @@ int rcu_is_cpu_idle(void)
preempt_enable(); preempt_enable();
return ret; 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? * __rcu_is_watching - are RCU read-side critical sections safe?