12 #ifndef __METAL_UTILITIES__H__ 13 #define __METAL_UTILITIES__H__ 16 #include <metal/assert.h> 26 #define metal_unused(x) do { (x) = (x); } while (0) 29 #define metal_dim(x) (sizeof(x) / sizeof(x[0])) 32 #define metal_min(x, y) ((x) < (y) ? (x) : (y)) 35 #define metal_max(x, y) ((x) > (y) ? (x) : (y)) 38 #define metal_sign(x) ((x) < 0 ? -1 : ((x) > 0 ? 1 : 0)) 41 #define metal_align_down(size, align) \ 42 ((size) & ~((align) - 1)) 45 #define metal_align_up(size, align) \ 46 metal_align_down((size) + (align) - 1, align) 49 #define metal_div_round_down(num, den) \ 53 #define metal_div_round_up(num, den) \ 54 metal_div_round_down((num) + (den) - 1, (den)) 57 #define metal_ptr_align_down(ptr, align) \ 58 (void *)(metal_align_down((uintptr_t)(ptr), (uintptr_t)(align))) 61 #define metal_ptr_align_up(ptr, align) \ 62 (void *)(metal_align_up((uintptr_t)(ptr), (uintptr_t)(align))) 65 #define metal_offset_of(structure, member) \ 66 ((uintptr_t) &(((structure *) 0)->member)) 69 #define metal_container_of(ptr, structure, member) \ 70 (void *)((uintptr_t)(ptr) - metal_offset_of(structure, member)) 72 #define METAL_BITS_PER_ULONG (8 * sizeof(unsigned long)) 74 #define metal_bit(bit) (1UL << (bit)) 76 #define metal_bitmap_longs(x) metal_div_round_up((x), METAL_BITS_PER_ULONG) 101 static inline unsigned int 113 #define metal_bitmap_for_each_set_bit(bitmap, bit, max) \ 114 for ((bit) = metal_bitmap_next_set_bit((bitmap), 0, (max)); \ 116 (bit) = metal_bitmap_next_set_bit((bitmap), (bit), (max))) 118 static inline unsigned int 130 #define metal_bitmap_for_each_clear_bit(bitmap, bit, max) \ 131 for ((bit) = metal_bitmap_next_clear_bit((bitmap), 0, (max)); \ 133 (bit) = metal_bitmap_next_clear_bit((bitmap), (bit), (max))) 137 unsigned long result;
141 for (result = 0; (1UL << result) < in; result ++)
static unsigned long metal_log2(unsigned long in)
Definition: utilities.h:135
#define METAL_BITS_PER_ULONG
Definition: utilities.h:72
static void metal_bitmap_clear_bit(unsigned long *bitmap, int bit)
Definition: utilities.h:90
static void metal_bitmap_set_bit(unsigned long *bitmap, int bit)
Definition: utilities.h:78
#define metal_bit(bit)
Definition: utilities.h:74
static unsigned int metal_bitmap_next_clear_bit(unsigned long *bitmap, unsigned int start, unsigned int max)
Definition: utilities.h:119
static unsigned int metal_bitmap_next_set_bit(unsigned long *bitmap, unsigned int start, unsigned int max)
Definition: utilities.h:102
static int metal_bitmap_is_bit_clear(unsigned long *bitmap, int bit)
Definition: utilities.h:96
static int metal_bitmap_is_bit_set(unsigned long *bitmap, int bit)
Definition: utilities.h:84
#define metal_assert(cond)
Assertion macro.
Definition: assert.h:21