The lock annotation macros __acquires, __releases, __acquire, and __release
all currently throw away the lock expression passed as an argument. Now that
sparse can parse __context__ and __attribute__((context)) with a context
expression, pass the lock expression down to sparse as the context expression.
This requires a version of sparse from GIT commit
37475a6c1c3e66219e68d912d5eb833f4098fd72 or later.
Signed-off-by: Josh Triplett <[email protected]>
---
The current sparse GIT tree now includes my patch for parsing a context
expression; updated commit message to reference the GIT commit in the
sparse tree, and to fix a typo. Please replace
"pass-sparse-the-lock-expression-given-to-lock-annotations.patch" in the
current -mm tree with this patch.
include/linux/compiler.h | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index b3963cf..2ed6528 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -10,10 +10,10 @@ # define __safe __attribute__((safe))
# define __force __attribute__((force))
# define __nocast __attribute__((nocast))
# define __iomem __attribute__((noderef, address_space(2)))
-# define __acquires(x) __attribute__((context(0,1)))
-# define __releases(x) __attribute__((context(1,0)))
-# define __acquire(x) __context__(1)
-# define __release(x) __context__(-1)
+# define __acquires(x) __attribute__((context(x,0,1)))
+# define __releases(x) __attribute__((context(x,1,0)))
+# define __acquire(x) __context__(x,1)
+# define __release(x) __context__(x,-1)
# define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
extern void __chk_user_ptr(void __user *);
extern void __chk_io_ptr(void __iomem *);
--
1.4.2.ga444
-
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