linux-kernel - [PATCH] libperf: Fix 32-bit build for tests uint64

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Date:   Tue,  1 Feb 2022 15:39:03 -0600
From:   Rob Herring <robh@...nel.org>
To:     Shunsuke Nakamura <nakamura.shun@...itsu.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...hat.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] libperf: Fix 32-bit build for tests uint64_t printf

Commit a7f3713f6bf2 ("libperf tests: Add test_stat_multiplexing test")
added printf's of 64-bit ints using %lu which doesn't work on 32-bit
builds:

tests/test-evlist.c:529:29: error: format ‘%lu’ expects argument of type \
  ‘long unsigned int’, but argument 4 has type ‘uint64_t’ {aka ‘long long unsigned int’} [-Werror=format=]

Use PRIu64 instead which works on both 32-bit and 64-bit systems.

Fixes: a7f3713f6bf2 ("libperf tests: Add test_stat_multiplexing test")
Cc: Shunsuke Nakamura <nakamura.shun@...itsu.com>
Signed-off-by: Rob Herring <robh@...nel.org>
---
 tools/lib/perf/tests/test-evlist.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/lib/perf/tests/test-evlist.c b/tools/lib/perf/tests/test-evlist.c
index b3479dfa9a1c..fa854c83b7e7 100644
--- a/tools/lib/perf/tests/test-evlist.c
+++ b/tools/lib/perf/tests/test-evlist.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #define _GNU_SOURCE // needed for sched.h to get sched_[gs]etaffinity and CPU_(ZERO,SET)
+#include <inttypes.h>
 #include <sched.h>
 #include <stdio.h>
 #include <stdarg.h>
@@ -526,12 +527,12 @@ static int test_stat_multiplexing(void)
 
 	min = counts[0].val;
 	for (i = 0; i < EVENT_NUM; i++) {
-		__T_VERBOSE("Event %2d -- Raw count = %lu, run = %lu, enable = %lu\n",
+		__T_VERBOSE("Event %2d -- Raw count = %" PRIu64 ", run = %" PRIu64 ", enable = %" PRIu64 "\n",
 			    i, counts[i].val, counts[i].run, counts[i].ena);
 
 		perf_counts_values__scale(&counts[i], true, &scaled);
 		if (scaled == 1) {
-			__T_VERBOSE("\t Scaled count = %lu (%.2lf%%, %lu/%lu)\n",
+			__T_VERBOSE("\t Scaled count = %" PRIu64 " (%.2lf%%, %" PRIu64 "/%" PRIu64 ")\n",
 				    counts[i].val,
 				    (double)counts[i].run / (double)counts[i].ena * 100.0,
 				    counts[i].run, counts[i].ena);
-- 
2.32.0