Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
perf tests sw-clock: Mark the volatile tmp variable as __maybe_unused
As it is just used to waste some cycles, not being used as all, to
silence some compilers.
Noticed with gcc version 16.0.1 20260115 on fedora 44:
tests/sw-clock.c: In function '__test__sw_clock_freq':
tests/sw-clock.c:31:22: error: variable 'tmp' set but not used [-Werror=unused-but-set-variable=]
31 | volatile int tmp = 0;
| ^~~
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+2
-1
+2
-1
tools/perf/tests/sw-clock.c
+2
-1
tools/perf/tests/sw-clock.c
···
5
5
#include <stdlib.h>
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6
#include <signal.h>
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#include <sys/mman.h>
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+
#include <linux/compiler.h>
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#include <linux/string.h>
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#include "tests.h"
···
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static int __test__sw_clock_freq(enum perf_sw_ids clock_id)
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{
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int i, err = -1;
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-
volatile int tmp = 0;
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+
volatile int tmp __maybe_unused = 0;
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u64 total_periods = 0;
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int nr_samples = 0;
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char sbuf[STRERR_BUFSIZE];