about summary refs log tree commit diff
path: root/include
diff options
context:
space:
mode:
authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-08-13 10:06:04 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-12-15 17:35:15 -0300
commit7478c9959ae409f7b3d63146943575d6ee745352 (patch)
tree79923a34afb4f9aafaf7a2fbcbfdc2a0997dad55 /include
parent5f6d8d97c69748180f0031dfa385aff75062c4d5 (diff)
downloadglibc-7478c9959ae409f7b3d63146943575d6ee745352.tar.gz
glibc-7478c9959ae409f7b3d63146943575d6ee745352.tar.xz
glibc-7478c9959ae409f7b3d63146943575d6ee745352.zip
malloc: Add THP/madvise support for sbrk
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>
Diffstat (limited to 'include')
-rw-r--r--include/libc-pointer-arith.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/libc-pointer-arith.h b/include/libc-pointer-arith.h
index 04ba537617..55dccc10ac 100644
--- a/include/libc-pointer-arith.h
+++ b/include/libc-pointer-arith.h
@@ -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