Get PAGE_SIZE from system configuration

Change-Id: I87f383c443b873e13d36e80bfa034665bf493520 Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> [ROCm/ROCR-Runtime commit: 3b2f064cbc]
2017-04-28 16:55:52 -04:00
parent 0d55f4a1f7
commit 49805f82b1
5 changed files with 31 additions and 9 deletions
@@ -31,6 +31,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <stdio.h>
+#include <strings.h>
 #include "fmm.h"

 static const char kfd_device_name[] = "/dev/kfd";
@@ -69,6 +70,12 @@ static void clear_after_fork(void)
 	kfd_open_count = 0;
 }

+static inline void init_page_size(void)
+{
+	PAGE_SIZE = sysconf(_SC_PAGESIZE);
+	PAGE_SHIFT = ffs(PAGE_SIZE) - 1;
+}
+
 HSAKMT_STATUS
 HSAKMTAPI
 hsaKmtOpenKFD(void)
@@ -99,6 +106,8 @@ hsaKmtOpenKFD(void)
 			goto open_failed;
 		}

+		init_page_size();
+
 		result = topology_sysfs_get_system_props(&sys_props);
 		if (result != HSAKMT_STATUS_SUCCESS)
 			goto topology_sysfs_failed;