--- a/tools/vm/page_owner_sort.c~tools-vm-page_owner_sortc-support-sorting-pid-and-time
+++ a/tools/vm/page_owner_sort.c
@@ -20,6 +20,7 @@
 #include <string.h>
 #include <regex.h>
 #include <errno.h>
+#include <linux/types.h>
 
 struct block_list {
 	char *txt;
@@ -27,9 +28,15 @@ struct block_list {
 	int len;
 	int num;
 	int page_num;
+	pid_t pid;
+	__u64 ts_nsec;
+	__u64 free_ts_nsec;
 };
 
 static regex_t order_pattern;
+static regex_t pid_pattern;
+static regex_t ts_nsec_pattern;
+static regex_t free_ts_nsec_pattern;
 static struct block_list *list;
 static int list_size;
 static int max_size;
@@ -79,34 +86,124 @@ static int compare_page_num(const void *
 	return l2->page_num - l1->page_num;
 }
 
-static int get_page_num(char *buf)
+static int compare_pid(const void *p1, const void *p2)
 {
-	int err, val_len, order_val;
-	char order_str[4] = {0};
-	char *endptr;
+	const struct block_list *l1 = p1, *l2 = p2;
+
+	return l1->pid - l2->pid;
+}
+
+static int compare_ts(const void *p1, const void *p2)
+{
+	const struct block_list *l1 = p1, *l2 = p2;
+
+	return l1->ts_nsec < l2->ts_nsec ? -1 : 1;
+}
+
+static int compare_free_ts(const void *p1, const void *p2)
+{
+	const struct block_list *l1 = p1, *l2 = p2;
+
+	return l1->free_ts_nsec < l2->free_ts_nsec ? -1 : 1;
+}
+
+static int search_pattern(regex_t *pattern, char *pattern_str, char *buf)
+{
+	int err, val_len;
 	regmatch_t pmatch[2];
 
-	err = regexec(&order_pattern, buf, 2, pmatch, REG_NOTBOL);
+	err = regexec(pattern, buf, 2, pmatch, REG_NOTBOL);
 	if (err != 0 || pmatch[1].rm_so == -1) {
-		printf("no order pattern in %s\n", buf);
-		return 0;
+		printf("no matching pattern in %s\n", buf);
+		return -1;
 	}
 	val_len = pmatch[1].rm_eo - pmatch[1].rm_so;
-	if (val_len > 2) /* max_order should not exceed 2 digits */
-		goto wrong_order;
 
-	memcpy(order_str, buf + pmatch[1].rm_so, val_len);
+	memcpy(pattern_str, buf + pmatch[1].rm_so, val_len);
+
+	return 0;
+}
+
+static void check_regcomp(regex_t *pattern, const char *regex)
+{
+	int err;
+
+	err = regcomp(pattern, regex, REG_EXTENDED | REG_NEWLINE);
+	if (err != 0 || pattern->re_nsub != 1) {
+		printf("Invalid pattern %s code %d\n", regex, err);
+		exit(1);
+	}
+}
+
+# define FIELD_BUFF 25
+
+static int get_page_num(char *buf)
+{
+	int order_val;
+	char order_str[FIELD_BUFF] = {0};
+	char *endptr;
 
+	search_pattern(&order_pattern, order_str, buf);
 	errno = 0;
 	order_val = strtol(order_str, &endptr, 10);
-	if (errno != 0 || endptr == order_str || *endptr != '\0')
-		goto wrong_order;
+	if (order_val > 64 || errno != 0 || endptr == order_str || *endptr != '\0') {
+		printf("wrong order in follow buf:\n%s\n", buf);
+		return 0;
+	}
 
 	return 1 << order_val;
+}
 
-wrong_order:
-	printf("wrong order in follow buf:\n%s\n", buf);
-	return 0;
+static pid_t get_pid(char *buf)
+{
+	pid_t pid;
+	char pid_str[FIELD_BUFF] = {0};
+	char *endptr;
+
+	search_pattern(&pid_pattern, pid_str, buf);
+	errno = 0;
+	pid = strtol(pid_str, &endptr, 10);
+	if (errno != 0 || endptr == pid_str || *endptr != '\0') {
+		printf("wrong/invalid pid in follow buf:\n%s\n", buf);
+		return -1;
+	}
+
+	return pid;
+
+}
+
+static __u64 get_ts_nsec(char *buf)
+{
+	__u64 ts_nsec;
+	char ts_nsec_str[FIELD_BUFF] = {0};
+	char *endptr;
+
+	search_pattern(&ts_nsec_pattern, ts_nsec_str, buf);
+	errno = 0;
+	ts_nsec = strtoull(ts_nsec_str, &endptr, 10);
+	if (errno != 0 || endptr == ts_nsec_str || *endptr != '\0') {
+		printf("wrong ts_nsec in follow buf:\n%s\n", buf);
+		return -1;
+	}
+
+	return ts_nsec;
+}
+
+static __u64 get_free_ts_nsec(char *buf)
+{
+	__u64 free_ts_nsec;
+	char free_ts_nsec_str[FIELD_BUFF] = {0};
+	char *endptr;
+
+	search_pattern(&free_ts_nsec_pattern, free_ts_nsec_str, buf);
+	errno = 0;
+	free_ts_nsec = strtoull(free_ts_nsec_str, &endptr, 10);
+	if (errno != 0 || endptr == free_ts_nsec_str || *endptr != '\0') {
+		printf("wrong free_ts_nsec in follow buf:\n%s\n", buf);
+		return -1;
+	}
+
+	return free_ts_nsec;
 }
 
 static void add_list(char *buf, int len)
@@ -129,6 +226,11 @@ static void add_list(char *buf, int len)
 	memcpy(list[list_size].txt, buf, len);
 	list[list_size].txt[len] = 0;
 	list[list_size].stacktrace = strchr(list[list_size].txt, '\n') ?: "";
+	list[list_size].pid = get_pid(buf);
+	list[list_size].ts_nsec = get_ts_nsec(buf);
+	list[list_size].free_ts_nsec = get_free_ts_nsec(buf);
+	memcpy(list[list_size].txt, buf, len);
+	list[list_size].txt[len] = 0;
 	list_size++;
 	if (list_size % 1000 == 0) {
 		printf("loaded %d\r", list_size);
@@ -144,6 +246,9 @@ static void usage(void)
 		"-m	Sort by total memory.\n"
 		"-s	Sort by the stack trace.\n"
 		"-t	Sort by times (default).\n"
+		"-p	Sort by pid.\n"
+		"-a	Sort by memory allocate time.\n"
+		"-r	Sort by memory release time.\n"
 		"-c	cull by comparing stacktrace instead of total block.\n"
 	);
 }
@@ -152,28 +257,40 @@ int main(int argc, char **argv)
 {
 	int (*cmp)(const void *, const void *) = compare_num;
 	int cull_st = 0;
+	int filter = 0;
 	FILE *fin, *fout;
 	char *buf;
 	int ret, i, count;
 	struct block_list *list2;
 	struct stat st;
-	int err;
 	int opt;
 
-	while ((opt = getopt(argc, argv, "mstc")) != -1)
+	while ((opt = getopt(argc, argv, "acfmprst")) != -1)
 		switch (opt) {
+		case 'a':
+			cmp = compare_ts;
+			break;
+		case 'c':
+			cull_st = 1;
+			break;
+		case 'f':
+			filter = 1;
+			break;
 		case 'm':
 			cmp = compare_page_num;
 			break;
+		case 'p':
+			cmp = compare_pid;
+			break;
+		case 'r':
+			cmp = compare_free_ts;
+			break;
 		case 's':
 			cmp = compare_stacktrace;
 			break;
 		case 't':
 			cmp = compare_num;
 			break;
-		case 'c':
-			cull_st = 1;
-			break;
 		default:
 			usage();
 			exit(1);
@@ -192,13 +309,10 @@ int main(int argc, char **argv)
 		exit(1);
 	}
 
-	err = regcomp(&order_pattern, "order\\s*([0-9]*),", REG_EXTENDED|REG_NEWLINE);
-	if (err != 0 || order_pattern.re_nsub != 1) {
-		printf("%s: Invalid pattern 'order\\s*([0-9]*),' code %d\n",
-			argv[0], err);
-		exit(1);
-	}
-
+	check_regcomp(&order_pattern, "order\\s*([0-9]*),");
+	check_regcomp(&pid_pattern, "pid\\s*([0-9]*),");
+	check_regcomp(&ts_nsec_pattern, "ts\\s*([0-9]*)\\s*ns,");
+	check_regcomp(&free_ts_nsec_pattern, "free_ts\\s*([0-9]*)\\s*ns");
 	fstat(fileno(fin), &st);
 	max_size = st.st_size / 100; /* hack ... */
 
@@ -248,10 +362,15 @@ int main(int argc, char **argv)
 
 	qsort(list2, count, sizeof(list[0]), cmp);
 
-	for (i = 0; i < count; i++)
+	for (i = 0; i < count; i++) {
+		if (filter == 1 && list2[i].free_ts_nsec != 0)
+			continue;
 		fprintf(fout, "%d times, %d pages:\n%s\n",
 				list2[i].num, list2[i].page_num, list2[i].txt);
-
+	}
 	regfree(&order_pattern);
+	regfree(&pid_pattern);
+	regfree(&ts_nsec_pattern);
+	regfree(&free_ts_nsec_pattern);
 	return 0;
 }
