36 #ifndef __METAL_UTILITIES__H__ 37 #define __METAL_UTILITIES__H__ 50 #define metal_unused(x) do { (x) = (x); } while (0) 53 #define metal_dim(x) (sizeof(x) / sizeof(x[0])) 56 #define metal_min(x, y) ((x) < (y) ? (x) : (y)) 59 #define metal_max(x, y) ((x) > (y) ? (x) : (y)) 62 #define metal_sign(x) ((x) < 0 ? -1 : ((x) > 0 ? 1 : 0)) 65 #define metal_align_down(size, align) \ 66 ((size) & ~((align) - 1)) 69 #define metal_align_up(size, align) \ 70 metal_align_down((size) + (align) - 1, align) 73 #define metal_div_round_down(num, den) \ 77 #define metal_div_round_up(num, den) \ 78 metal_div_round_down((num) + (den) - 1, (den)) 81 #define metal_ptr_align_down(ptr, align) \ 82 (void *)(metal_align_down((uintptr_t)(ptr), (uintptr_t)(align))) 85 #define metal_ptr_align_up(ptr, align) \ 86 (void *)(metal_align_up((uintptr_t)(ptr), (uintptr_t)(align))) 89 #define metal_offset_of(structure, member) \ 90 ((uintptr_t) &(((structure *) 0)->member)) 93 #define metal_container_of(ptr, structure, member) \ 94 (void *)((uintptr_t)(ptr) - metal_offset_of(structure, member)) 96 #define METAL_BITS_PER_ULONG (8 * sizeof(unsigned long)) 98 #define metal_bit(bit) (1UL << (bit)) 100 #define metal_bitmap_longs(x) metal_div_round_up((x), METAL_BITS_PER_ULONG) 125 static inline unsigned int 137 #define metal_bitmap_for_each_set_bit(bitmap, bit, max) \ 138 for ((bit) = metal_bitmap_next_set_bit((bitmap), 0, (max)); \ 140 (bit) = metal_bitmap_next_set_bit((bitmap), (bit), (max))) 142 static inline unsigned int 154 #define metal_bitmap_for_each_clear_bit(bitmap, bit, max) \ 155 for ((bit) = metal_bitmap_next_clear_bit((bitmap), 0, (max)); \ 157 (bit) = metal_bitmap_next_clear_bit((bitmap), (bit), (max))) 161 unsigned long result;
163 assert((in & (in - 1)) == 0);
165 for (result = 0; (1UL << result) < in; result ++)
static unsigned long metal_log2(unsigned long in)
Definition: utilities.h:159
#define METAL_BITS_PER_ULONG
Definition: utilities.h:96
static void metal_bitmap_clear_bit(unsigned long *bitmap, int bit)
Definition: utilities.h:114
static void metal_bitmap_set_bit(unsigned long *bitmap, int bit)
Definition: utilities.h:102
#define metal_bit(bit)
Definition: utilities.h:98
static unsigned int metal_bitmap_next_clear_bit(unsigned long *bitmap, unsigned int start, unsigned int max)
Definition: utilities.h:143
static unsigned int metal_bitmap_next_set_bit(unsigned long *bitmap, unsigned int start, unsigned int max)
Definition: utilities.h:126
static int metal_bitmap_is_bit_clear(unsigned long *bitmap, int bit)
Definition: utilities.h:120
static int metal_bitmap_is_bit_set(unsigned long *bitmap, int bit)
Definition: utilities.h:108