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rcu: add __rcu API for later sparse checking 

This commit defines an __rcu API, but provides only vacuous definitions
for it.  This breaks dependencies among most of the subsequent patches,
allowing them to reach mainline asynchronously via whatever trees are
appropriate.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Christopher Li <sparse@chrisli.org>
Cc: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Paul E. McKenney 2010-05-11 16:13:14 -07:00
parent f5155b3327
commit 71d1d5c722
1 changed files with 2 additions and 0 deletions
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2
include/linux/compiler.h
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@ -16,6 +16,7 @@
# define __release(x) __context__(x,-1)
# define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
# define __percpu __attribute__((noderef, address_space(3)))
# define __rcu
extern void __chk_user_ptr(const volatile void __user *);
extern void __chk_io_ptr(const volatile void __iomem *);
#else
@ -34,6 +35,7 @@ extern void __chk_io_ptr(const volatile void __iomem *);
# define __release(x) (void)0
# define __cond_lock(x,c) (c)
# define __percpu
# define __rcu
#endif
#ifdef __KERNEL__