[PATCH 14/19] perf tools: Add perf_config_u64 function

[Jiri Olsa]

Adding perf_config_u64 function to be able to parse
'llong' values out of config file.

Cc: Arnaldo Carvalho de Melo <a...@kernel.org>
Cc: Corey Ashford <cjash...@linux.vnet.ibm.com>
Cc: David Ahern <dsah...@gmail.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Jean Pihet <jean.pi...@linaro.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/util/cache.h  |  1 +
 tools/perf/util/config.c | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 7b176dd02e1a..5cf9e1b5989d 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -22,6 +22,7 @@ typedef int (*config_fn_t)(const char *, const char *, void 
*);
 extern int perf_default_config(const char *, const char *, void *);
 extern int perf_config(config_fn_t fn, void *);
 extern int perf_config_int(const char *, const char *);
+extern u64 perf_config_u64(const char *, const char *);
 extern int perf_config_bool(const char *, const char *);
 extern int config_error_nonbool(const char *);
 extern const char *perf_config_dirname(const char *, const char *);
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 1e5e2e5af6b1..9970b8b0190b 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -286,6 +286,21 @@ static int parse_unit_factor(const char *end, unsigned 
long *val)
        return 0;
 }
 
+static int perf_parse_llong(const char *value, long long *ret)
+{
+       if (value && *value) {
+               char *end;
+               long long val = strtoll(value, &end, 0);
+               unsigned long factor = 1;
+
+               if (!parse_unit_factor(end, &factor))
+                       return 0;
+               *ret = val * factor;
+               return 1;
+       }
+       return 0;
+}
+
 static int perf_parse_long(const char *value, long *ret)
 {
        if (value && *value) {
@@ -307,6 +322,15 @@ static void die_bad_config(const char *name)
        die("bad config value for '%s'", name);
 }
 
+u64 perf_config_u64(const char *name, const char *value)
+{
+       long long ret = 0;
+
+       if (!perf_parse_llong(value, &ret))
+               die_bad_config(name);
+       return (u64) ret;
+}
+
 int perf_config_int(const char *name, const char *value)
 {
        long ret = 0;
-- 
1.8.3.1

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