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-rw-r--r--sysdep/unix/alloc.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/sysdep/unix/alloc.c b/sysdep/unix/alloc.c
index 3ea10c32..030fb9c1 100644
--- a/sysdep/unix/alloc.c
+++ b/sysdep/unix/alloc.c
@@ -20,6 +20,10 @@
#include <sys/mman.h>
#endif
+#ifdef CONFIG_DISABLE_THP
+#include <sys/prctl.h>
+#endif
+
long page_size = 0;
#ifdef HAVE_MMAP
@@ -293,6 +297,12 @@ page_cleanup(void *_ UNUSED)
void
resource_sys_init(void)
{
+#ifdef CONFIG_DISABLE_THP
+ /* Disable transparent huge pages, they do not work properly with madvice(MADV_DONTNEED) */
+ if (prctl(PR_SET_THP_DISABLE, (unsigned long) 1, (unsigned long) 0, (unsigned long) 0, (unsigned long) 0) < 0)
+ die("prctl(PR_SET_THP_DISABLE) failed: %m");
+#endif
+
#ifdef HAVE_MMAP
/* Check what page size the system supports */
if (!(page_size = sysconf(_SC_PAGESIZE)))