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kmalloc(): use macros to define size alignment

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This commit is contained in:
Balazs Gerofi
2016-08-19 12:51:28 +09:00
parent a7ee3f531b
commit d550bced78
1 changed files with 7 additions and 5 deletions
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12
kernel/mem.c
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@@ -1015,6 +1015,9 @@ void kmalloc_consolidate_free_list(void)
ihk_mc_spinlock_unlock(&cpu_local_var(remote_free_list_lock), irqflags); ihk_mc_spinlock_unlock(&cpu_local_var(remote_free_list_lock), irqflags);
} }
#define KMALLOC_MIN_SHIFT (5)
#define KMALLOC_MIN_SIZE (1 << KMALLOC_TRACK_HASH_SHIFT)
#define KMALLOC_MIN_MASK (KMALLOC_MIN_SIZE - 1)
/* Actual low-level allocation routines */ /* Actual low-level allocation routines */
static void *___kmalloc(int size, enum ihk_mc_ap_flag flag) static void *___kmalloc(int size, enum ihk_mc_ap_flag flag)
@@ -1024,11 +1027,10 @@ static void *___kmalloc(int size, enum ihk_mc_ap_flag flag)
int npages; int npages;
unsigned long kmalloc_irq_flags = cpu_disable_interrupt_save(); unsigned long kmalloc_irq_flags = cpu_disable_interrupt_save();
/* /* KMALLOC_MIN_SIZE bytes aligned size. */
* 32 bytes aligned size, as this leaves us at cache line boundary if (size & KMALLOC_MIN_MASK) {
* (including the header) even for the smallest allocations size = ((size + KMALLOC_MIN_SIZE - 1) & ~(KMALLOC_MIN_MASK));
*/ }
if ((size % 32) != 0) size = ((size + 31) & ~((int)32-1));
chunk = NULL; chunk = NULL;
/* Find a chunk that is big enough */ /* Find a chunk that is big enough */