diff mbox series

proc: fixup uptime test

Message ID Y1bUiT7VRXlXPQa1@p183
State New
Headers
Series proc: fixup uptime test |

Commit Message

Alexey Dobriyan Oct. 24, 2022, 6:08 p.m. UTC 
  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(-)
diff mbox series

Patch

--- 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);