Messages in this thread Patch in this message | | | Date | Thu, 10 Apr 2008 15:48:11 +0200 | From | Johannes Berg <> | Subject | [RFC 1/3] add macros for new sparse features |
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This patch adds kernel macros for a few new sparse features, namely * checking try_lock functions and * making a function or macro require a certain lock.
Still waiting to see what the sparse folks say to my patches.
Not-yet-signed-off-by: Johannes Berg <johannes@sipsolutions.net> --- include/linux/compiler.h | 6 ++++++ 1 file changed, 6 insertions(+)
--- everything.orig/include/linux/compiler.h 2008-04-10 15:36:18.000000000 +0200 +++ everything/include/linux/compiler.h 2008-04-10 15:36:40.000000000 +0200 @@ -11,9 +11,12 @@ # define __nocast __attribute__((nocast)) # define __iomem __attribute__((noderef, address_space(2))) # define __acquires(x) __attribute__((context(x,0,1))) +# define __try_acquires(x,t,f) __attribute__((conditional_context(x,0,t,f))) # define __releases(x) __attribute__((context(x,1,0))) # define __acquire(x) __context__(x,1) # define __release(x) __context__(x,-1) +# define __requires(x) __attribute__((context(x,1,1))) +# define __macro_requires(x) __context__(x,0,1) # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) extern void __chk_user_ptr(const volatile void __user *); extern void __chk_io_ptr(const volatile void __iomem *); @@ -28,9 +31,12 @@ extern void __chk_io_ptr(const volatile # define __chk_io_ptr(x) (void)0 # define __builtin_warning(x, y...) (1) # define __acquires(x) +# define __try_acquires(x,t,f) # define __releases(x) # define __acquire(x) (void)0 # define __release(x) (void)0 +# define __requires(x) +# define __macro_requires(x) # define __cond_lock(x,c) (c) #endif --
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