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* [PATCH 1/1] perf bench evlist-open-close: Use PRIu64 with u64 to fix build on 32-bit architectures
@ 2021-08-30 18:49 Arnaldo Carvalho de Melo
  0 siblings, 0 replies; only message in thread
From: Arnaldo Carvalho de Melo @ 2021-08-30 18:49 UTC (permalink / raw)
  To: Riccardo Mancini
  Cc: Jiri Olsa, Namhyung Kim, Adrian Hunter, Linux Kernel Mailing List

Hi Riccardo,

	I'm applying this one here, please take this into account in the
future when using u64 in printf-like routines.

- Arnaldo

From: Arnaldo Carvalho de Melo <>

  73     9.00 ubuntu:18.04-x-powerpc        : FAIL gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
    bench/evlist-open-close.c: In function 'bench_evlist_open_close__run':
    bench/evlist-open-close.c:173:12: error: format '%ld' expects argument of type 'long int', but argument 5 has type 'u64 {aka long long unsigned int}' [-Werror=format=]
       pr_debug("Iteration %d took:\t%ldus\n", i, runtime_us);
    bench/../util/debug.h:18:21: note: in definition of macro 'pr_fmt'
     #define pr_fmt(fmt) fmt
    bench/evlist-open-close.c:173:3: note: in expansion of macro 'pr_debug'
       pr_debug("Iteration %d took:\t%ldus\n", i, runtime_us);
    cc1: all warnings being treated as errors
    /git/perf-5.14.0/tools/build/ recipe for target 'bench' failed

Cc: Riccardo Mancini <>
Fixes: 4241eabf59d5b7e9 ("perf bench: Add benchmark for evlist open/close operations")
Signed-off-by: Arnaldo Carvalho de Melo <>
 tools/perf/bench/evlist-open-close.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/bench/evlist-open-close.c b/tools/perf/bench/evlist-open-close.c
index 674cb14cbaa9ef2c..83e9897c64a13179 100644
--- a/tools/perf/bench/evlist-open-close.c
+++ b/tools/perf/bench/evlist-open-close.c
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <limits.h>
@@ -170,7 +171,7 @@ static int bench_evlist_open_close__run(char *evstr)
 		update_stats(&time_stats, runtime_us);
-		pr_debug("Iteration %d took:\t%ldus\n", i, runtime_us);
+		pr_debug("Iteration %d took:\t%" PRIu64 "us\n", i, runtime_us);
 	time_average = avg_stats(&time_stats);

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2021-08-30 18:49 [PATCH 1/1] perf bench evlist-open-close: Use PRIu64 with u64 to fix build on 32-bit architectures Arnaldo Carvalho de Melo

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