linux-kernel - [PATCH v2 2/6] perf time-utils: Fix 32-bit nsec parsing

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Message-Id: <20240904050606.752788-3-irogers@google.com>
Date: Tue,  3 Sep 2024 22:06:02 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, 
	Dominique Martinet <asmadeus@...ewreck.org>, Yang Jihong <yangjihong@...edance.com>, 
	Colin Ian King <colin.i.king@...il.com>, Chaitanya S Prakash <chaitanyas.prakash@....com>, 
	"Masami Hiramatsu (Google)" <mhiramat@...nel.org>, James Clark <james.clark@...aro.org>, 
	John Garry <john.g.garry@...cle.com>, Junhao He <hejunhao3@...wei.com>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/6] perf time-utils: Fix 32-bit nsec parsing

The "time utils" test fails in 32-bit builds:
```
...
parse_nsec_time("18446744073.709551615")
Failed. ptime 4294967295709551615 expected 18446744073709551615
...
```

Switch strtoul to strtoull as an unsigned long in 32-bit build isn't
64-bits.

Fixes: c284d669a20d ("perf tools: Move parse_nsec_time to time-utils.c")
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/time-utils.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/time-utils.c b/tools/perf/util/time-utils.c
index 302443921681..1b91ccd4d523 100644
--- a/tools/perf/util/time-utils.c
+++ b/tools/perf/util/time-utils.c
@@ -20,7 +20,7 @@ int parse_nsec_time(const char *str, u64 *ptime)
 	u64 time_sec, time_nsec;
 	char *end;
 
-	time_sec = strtoul(str, &end, 10);
+	time_sec = strtoull(str, &end, 10);
 	if (*end != '.' && *end != '\0')
 		return -1;
 
@@ -38,7 +38,7 @@ int parse_nsec_time(const char *str, u64 *ptime)
 		for (i = strlen(nsec_buf); i < 9; i++)
 			nsec_buf[i] = '0';
 
-		time_nsec = strtoul(nsec_buf, &end, 10);
+		time_nsec = strtoull(nsec_buf, &end, 10);
 		if (*end != '\0')
 			return -1;
 	} else
-- 
2.46.0.469.g59c65b2a67-goog