Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

[karo-tx-linux.git] / tools / perf / util / units.c

diff --git a/tools/perf/util/units.c b/tools/perf/util/units.c
index f6a2a3d117d5857143ccc92508d370d8c32c64a0..4767ec2c5ef63cefbb03464fd244002ae6f5d54e 100644 (file)
--- a/tools/perf/util/units.c
+++ b/tools/perf/util/units.c
@@ -1,8 +1,37 @@
 #include "units.h"
 #include <inttypes.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
 #include <linux/kernel.h>
 #include <linux/time64.h>
 
+unsigned long parse_tag_value(const char *str, struct parse_tag *tags)
+{
+       struct parse_tag *i = tags;
+
+       while (i->tag) {
+               char *s = strchr(str, i->tag);
+
+               if (s) {
+                       unsigned long int value;
+                       char *endptr;
+
+                       value = strtoul(str, &endptr, 10);
+                       if (s != endptr)
+                               break;
+
+                       if (value > ULONG_MAX / i->mult)
+                               break;
+                       value *= i->mult;
+                       return value;
+               }
+               i++;
+       }
+
+       return (unsigned long) -1;
+}
+
 unsigned long convert_unit(unsigned long value, char *unit)
 {
        *unit = ' ';