X-Git-Url: http://git.rrze.uni-erlangen.de/gitweb/?p=LbmBenchmarkKernelsPublic.git;a=blobdiff_plain;f=src%2FMemory.c;h=e7dda39419bb03f143bf6777186d755ed3717a64;hp=d9d1f942c7e11c3c8ddf05e4d2d5ab58fac1f24e;hb=e3f82424829ebb623343ce0092238f83b4a1b8c2;hpb=ecf590ae9bb13ba2b2f01c3bf7a53056a8b1467b

diff --git a/src/Memory.c b/src/Memory.c
index d9d1f94..e7dda39 100644
--- a/src/Memory.c
+++ b/src/Memory.c
@@ -24,11 +24,24 @@
 //  along with LbmBenchKernels.  If not, see <http://www.gnu.org/licenses/>.
 //
 // --------------------------------------------------------------------------
+// TODO: make configurable
+#define HAVE_HUGE_PAGES
+
+
+#ifdef HAVE_HUGE_PAGES
+#define _BSD_SOURCE
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>  // strerror
 #include <errno.h>
 
+
+#ifdef HAVE_HUGE_PAGES
+#include <sys/mman.h> // madvise
+#endif
+
 #include "Base.h"
 #include "Memory.h"
 
@@ -60,6 +73,19 @@ int MemAllocAligned(void ** ptr, size_t bytesToAlloc, size_t alignmentBytes)
 		exit(1);
 	}
 
+#ifdef HAVE_HUGE_PAGES
+
+	if (alignmentBytes % 4096 == 0) {
+		ret = madvise(*ptr, bytesToAlloc, MADV_HUGEPAGE);
+
+		if (ret != 0) {
+			DEBUG_BREAK_POINT();
+			Error("madvise(%p, %lu, MADV_HUGEPAGE) failed: %d - %s.\n", *ptr, bytesToAlloc, errno, strerror(errno));
+			exit(1);
+		}
+	}
+#endif
+
 	return 0;
 }