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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-03-13 10:14:05 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-03-13 10:14:05 +0100 |
| commit | b3c9a04135bdbd3aabd5e9534bad0fe6df505f8a (patch) | |
| tree | 2372cd098db2a0e45da99125258e454b827cb577 /include/linux/util_macros.h | |
| parent | fe9ae05cfbe587dda724fcf537c00bc2f287da62 (diff) | |
| parent | eeac8ede17557680855031c6f305ece2378af326 (diff) | |
| download | linux-next-b3c9a04135bdbd3aabd5e9534bad0fe6df505f8a.tar.gz linux-next-b3c9a04135bdbd3aabd5e9534bad0fe6df505f8a.zip | |
Merge drm/drm-fixes into drm-misc-fixes
Backmerging to get latest upstream.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'include/linux/util_macros.h')
| -rw-r--r-- | include/linux/util_macros.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/util_macros.h b/include/linux/util_macros.h index 72299f261b25..6bb460c3e818 100644 --- a/include/linux/util_macros.h +++ b/include/linux/util_macros.h @@ -2,6 +2,8 @@ #ifndef _LINUX_HELPER_MACROS_H_ #define _LINUX_HELPER_MACROS_H_ +#include <linux/math.h> + #define __find_closest(x, a, as, op) \ ({ \ typeof(as) __fc_i, __fc_as = (as) - 1; \ @@ -38,4 +40,16 @@ */ #define find_closest_descending(x, a, as) __find_closest(x, a, as, >=) +/** + * is_insidevar - check if the @ptr points inside the @var memory range. + * @ptr: the pointer to a memory address. + * @var: the variable which address and size identify the memory range. + * + * Evaluates to true if the address in @ptr lies within the memory + * range allocated to @var. + */ +#define is_insidevar(ptr, var) \ + ((uintptr_t)(ptr) >= (uintptr_t)(var) && \ + (uintptr_t)(ptr) < (uintptr_t)(var) + sizeof(var)) + #endif |