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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-19 17:00:54 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-20 18:08:23 +0300 |
| commit | aaa6ef8aa85f33c6dd593e139b7f7d901bbde0e2 (patch) | |
| tree | b30a67293a6e51db15545cce56928486e47b6af2 /tools/include | |
| parent | 146dc303630aff5fdf006614a67704539c519c33 (diff) | |
| download | linux-aaa6ef8aa85f33c6dd593e139b7f7d901bbde0e2.tar.xz | |
tools headers: Grab copy of linux/const.h, needed by linux/bits.h
So that can update the copy of linux/bits.h that now uses macros defined
in const.h and that are not available in older systems.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-c2qfcbl58hxyfb5u5xivp7is@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/linux/const.h | 9 | ||||
| -rw-r--r-- | tools/include/uapi/linux/const.h | 31 |
2 files changed, 40 insertions, 0 deletions
diff --git a/tools/include/linux/const.h b/tools/include/linux/const.h new file mode 100644 index 000000000000..7b55a55f5911 --- /dev/null +++ b/tools/include/linux/const.h @@ -0,0 +1,9 @@ +#ifndef _LINUX_CONST_H +#define _LINUX_CONST_H + +#include <uapi/linux/const.h> + +#define UL(x) (_UL(x)) +#define ULL(x) (_ULL(x)) + +#endif /* _LINUX_CONST_H */ diff --git a/tools/include/uapi/linux/const.h b/tools/include/uapi/linux/const.h new file mode 100644 index 000000000000..5ed721ad5b19 --- /dev/null +++ b/tools/include/uapi/linux/const.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* const.h: Macros for dealing with constants. */ + +#ifndef _UAPI_LINUX_CONST_H +#define _UAPI_LINUX_CONST_H + +/* Some constant macros are used in both assembler and + * C code. Therefore we cannot annotate them always with + * 'UL' and other type specifiers unilaterally. We + * use the following macros to deal with this. + * + * Similarly, _AT() will cast an expression with a type in C, but + * leave it unchanged in asm. + */ + +#ifdef __ASSEMBLY__ +#define _AC(X,Y) X +#define _AT(T,X) X +#else +#define __AC(X,Y) (X##Y) +#define _AC(X,Y) __AC(X,Y) +#define _AT(T,X) ((T)(X)) +#endif + +#define _UL(x) (_AC(x, UL)) +#define _ULL(x) (_AC(x, ULL)) + +#define _BITUL(x) (_UL(1) << (x)) +#define _BITULL(x) (_ULL(1) << (x)) + +#endif /* _UAPI_LINUX_CONST_H */ |