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malloc: Add THP/madvise support for sbrk

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To increase effectiveness with Transparent Huge Page with madvise, the
large page size is use instead page size for sbrk increment for the
main arena.

Checked on x86_64-linux-gnu.

Reviewed-by: DJ Delorie <dj@redhat.com>
This commit is contained in:
Adhemerval Zanella
2021-08-13 10:06:04 -03:00
parent 5f6d8d97c6
commit 7478c9959a
2 changed files with 37 additions and 5 deletions
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8
include/libc-pointer-arith.h
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@@ -60,4 +60,12 @@
#define PTR_ALIGN_UP(base, size) \
((__typeof__ (base)) ALIGN_UP ((uintptr_t) (base), (size)))
/* Check if BASE is aligned on SIZE */
#define PTR_IS_ALIGNED(base, size) \
((((uintptr_t) (base)) & (size - 1)) == 0)
/* Returns the ptrdiff_t diference between P1 and P2. */
#define PTR_DIFF(p1, p2) \
((ptrdiff_t)((uintptr_t)(p1) - (uintptr_t)(p2)))
#endif