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Date: Mon, 24 Oct 2022 21:08:09 +0300 From: Alexey Dobriyan <adobriyan@...il.com> To: akpm@...ux-foundation.org Cc: linux-kernel@...r.kernel.org Subject: [PATCH] proc: fixup uptime test 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@...il.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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