diff options
Diffstat (limited to 'tools/perf/util/include/linux/kernel.h')
-rw-r--r-- | tools/perf/util/include/linux/kernel.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/util/include/linux/kernel.h b/tools/perf/util/include/linux/kernel.h new file mode 100644 index 000000000000..99c1b3d1edd9 --- /dev/null +++ b/tools/perf/util/include/linux/kernel.h | |||
@@ -0,0 +1,21 @@ | |||
1 | #ifndef PERF_LINUX_KERNEL_H_ | ||
2 | #define PERF_LINUX_KERNEL_H_ | ||
3 | |||
4 | #ifndef offsetof | ||
5 | #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) | ||
6 | #endif | ||
7 | |||
8 | #ifndef container_of | ||
9 | /** | ||
10 | * container_of - cast a member of a structure out to the containing structure | ||
11 | * @ptr: the pointer to the member. | ||
12 | * @type: the type of the container struct this is embedded in. | ||
13 | * @member: the name of the member within the struct. | ||
14 | * | ||
15 | */ | ||
16 | #define container_of(ptr, type, member) ({ \ | ||
17 | const typeof(((type *)0)->member) * __mptr = (ptr); \ | ||
18 | (type *)((char *)__mptr - offsetof(type, member)); }) | ||
19 | #endif | ||
20 | |||
21 | #endif | ||