From 5a8a0050269382d94d88016ba04272eef658bc97 Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Fri, 20 Sep 2019 11:01:36 +0100
Subject: [PATCH] Adding AnonHugePages case + comments

---
 src/zmalloc.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/zmalloc.c b/src/zmalloc.c
index 48f4b1e99..764738636 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -395,15 +395,24 @@ size_t zmalloc_get_smap_bytes_by_field(char *field, long pid) {
     return bytes;
 }
 #else
+/* Get sum of the specified field from libproc api call.
+ * As there are per page value basis we need to convert
+ * them accordingly.
+ *
+ * Note that AnonHugePages is a no-op as THP feature
+ * is not supported in this platform
+ */
 size_t zmalloc_get_smap_bytes_by_field(char *field, long pid) {
 #if defined(__APPLE__)
     struct proc_regioninfo pri;
     if (proc_pidinfo(pid, PROC_PIDREGIONINFO, 0, &pri, PROC_PIDREGIONINFO_SIZE) ==
 	PROC_PIDREGIONINFO_SIZE) {
-	if (!strcmp(field, "Private_Dirty")) {
+	if (!strcmp(field, "Private_Dirty:")) {
             return (size_t)pri.pri_pages_dirtied * 4096;
-	} else if (!strcmp(field, "Rss")) {
+	} else if (!strcmp(field, "Rss:")) {
             return (size_t)pri.pri_pages_resident * 4096;
+	} else if (!strcmp(field, "AnonHugePages:")) {
+            return 0;
 	}
     }
     return 0;