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authorPeter Zijlstra <peterz@infradead.org>2023-05-26 13:23:48 +0300
committerPeter Zijlstra <peterz@infradead.org>2023-06-26 12:14:18 +0300
commit54da6a0924311c7cf5015533991e44fb8eb12773 (patch)
treeaf497256995d40431b9c214e7faa45639bf3d991 /include/linux/compiler_attributes.h
parent9a1f37ebcfe061721564042254719dc8fd5c9fa0 (diff)
downloadlinux-54da6a0924311c7cf5015533991e44fb8eb12773.tar.xz
locking: Introduce __cleanup() based infrastructure
Use __attribute__((__cleanup__(func))) to build: - simple auto-release pointers using __free() - 'classes' with constructor and destructor semantics for scope-based resource management. - lock guards based on the above classes. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20230612093537.614161713%40infradead.org
Diffstat (limited to 'include/linux/compiler_attributes.h')
-rw-r--r--include/linux/compiler_attributes.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index e659cb6fded3..081deaef1f0f 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -70,6 +70,12 @@
#define __assume_aligned(a, ...) __attribute__((__assume_aligned__(a, ## __VA_ARGS__)))
/*
+ * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-cleanup-variable-attribute
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#cleanup
+ */
+#define __cleanup(func) __attribute__((__cleanup__(func)))
+
+/*
* Note the long name.
*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-const-function-attribute