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authorThomas Richter <tmricht@linux.ibm.com>2022-05-20 10:11:58 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-05-21 14:45:19 -0300
commitf8ac1c478424a9a14669b8cef7389b1e14e5229d (patch)
tree124512b815fb28f9d21789343ab22f5a23a90b76
parentcaaaa55477e23cec9761f7c981b144dd5ecc0bf3 (diff)
perf bench numa: Address compiler error on s390
The compilation on s390 results in this error: # make DEBUG=y bench/numa.o ... bench/numa.c: In function ‘__bench_numa’: bench/numa.c:1749:81: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size between 10 and 20 [-Werror=format-truncation=] 1749 | snprintf(tname, sizeof(tname), "process%d:thread%d", p, t); ^~ ... bench/numa.c:1749:64: note: directive argument in the range [-2147483647, 2147483646] ... # The maximum length of the %d replacement is 11 characters because of the negative sign. Therefore extend the array by two more characters. Output after: # make DEBUG=y bench/numa.o > /dev/null 2>&1; ll bench/numa.o -rw-r--r-- 1 root root 418320 May 19 09:11 bench/numa.o # Fixes: 3aff8ba0a4c9c919 ("perf bench numa: Avoid possible truncation when using snprintf()") Suggested-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Link: https://lore.kernel.org/r/20220520081158.2990006-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/bench/numa.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
index d5289fa58a4f..20eed1e53f80 100644
--- a/tools/perf/bench/numa.c
+++ b/tools/perf/bench/numa.c
@@ -1740,7 +1740,7 @@ static int __bench_numa(const char *name)
"GB/sec,", "total-speed", "GB/sec total speed");
if (g->p.show_details >= 2) {
- char tname[14 + 2 * 10 + 1];
+ char tname[14 + 2 * 11 + 1];
struct thread_data *td;
for (p = 0; p < g->p.nr_proc; p++) {
for (t = 0; t < g->p.nr_threads; t++) {