Messages in this thread Patch in this message | | | Date | Mon, 24 Oct 2022 21:08:09 +0300 | From | Alexey Dobriyan <> | Subject | [PATCH] proc: fixup uptime test |
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syscall(3) returns -1 and sets errno on error, unlike "syscall" instruction.
Systems which have <= 32/64 CPUs are unaffected. Test won't bounce to all CPUs before completing if there are more of them.
Fixes: 1f5bd0547654 ("proc: selftests: test /proc/uptime") Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> ---
tools/testing/selftests/proc/proc-uptime-002.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/proc/proc-uptime-002.c +++ b/tools/testing/selftests/proc/proc-uptime-002.c @@ -17,6 +17,7 @@ // while shifting across CPUs. #undef NDEBUG #include <assert.h> +#include <errno.h> #include <unistd.h> #include <sys/syscall.h> #include <stdlib.h> @@ -54,7 +55,7 @@ int main(void) len += sizeof(unsigned long); free(m); m = malloc(len); - } while (sys_sched_getaffinity(0, len, m) == -EINVAL); + } while (sys_sched_getaffinity(0, len, m) == -1 && errno == EINVAL); fd = open("/proc/uptime", O_RDONLY); assert(fd >= 0);
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