+++ ./utils/kernel.c	2019-08-26 05:01:08.580055352 +0300
@@ -29,6 +29,42 @@
 
 #define TRACING_DIR  "/sys/kernel/debug/tracing"
 
+int strverscmp(const char *l0, const char *r0)
+{
+	const unsigned char *l = (const void *)l0;
+	const unsigned char *r = (const void *)r0;
+	size_t i, dp, j;
+	int z = 1;
+
+	/* Find maximal matching prefix and track its maximal digit
+	 * suffix and whether those digits are all zeros. */
+	for (dp=i=0; l[i]==r[i]; i++) {
+		int c = l[i];
+		if (!c) return 0;
+		if (!isdigit(c)) dp=i+1, z=1;
+		else if (c!='0') z=0;
+	}
+
+	if (l[dp]!='0' && r[dp]!='0') {
+		/* If we're not looking at a digit sequence that began
+		 * with a zero, longest digit string is greater. */
+		for (j=i; isdigit(l[j]); j++)
+			if (!isdigit(r[j])) return 1;
+		if (isdigit(r[j])) return -1;
+	} else if (z && dp<i && (isdigit(l[i]) || isdigit(r[i]))) {
+		/* Otherwise, if common prefix of digit sequence is
+		 * all zeros, digits order less than non-digits. */
+		return (unsigned char)(l[i]-'0') - (unsigned char)(r[i]-'0');
+	}
+
+	return l[i] - r[i];
+}
+
+static int versionsort(const struct dirent **a, const struct dirent **b)
+{
+	return strverscmp((*a)->d_name, (*b)->d_name);
+}
+
 static bool kernel_tracing_enabled;
 
 /* tree of executed kernel functions */