diff options
| -rwxr-xr-x | scripts/kvm/kvm_stat | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat index b5422f86ab..457624d9f3 100755 --- a/scripts/kvm/kvm_stat +++ b/scripts/kvm/kvm_stat @@ -287,10 +287,8 @@ filters['kvm_userspace_exit'] = ('reason', USERSPACE_EXIT_REASONS) if EXIT_REASONS: filters['kvm_exit'] = ('exit_reason', EXIT_REASONS) -libc = ctypes.CDLL('libc.so.6') +libc = ctypes.CDLL('libc.so.6', use_errno=True) syscall = libc.syscall -get_errno = libc.__errno_location -get_errno.restype = ctypes.POINTER(ctypes.c_int) class perf_event_attr(ctypes.Structure): _fields_ = [('type', ctypes.c_uint32), @@ -351,8 +349,9 @@ class Event(object): group_leader = group.events[0].fd fd = _perf_event_open(attr, -1, group.cpu, group_leader, 0) if fd == -1: - err = get_errno()[0] - raise Exception('perf_event_open failed, errno = ' + err.__str__()) + err = ctypes.get_errno() + raise OSError(err, os.strerror(err), + 'while calling sys_perf_event_open().') if tracefilter: fcntl.ioctl(fd, IOCTL_NUMBERS['SET_FILTER'], tracefilter) self.fd = fd |