ww_class
extern struct ww_class reservation_ww_class;
ctx ? ctx->ww_class->name : "ww_mutex_lock",
struct ww_class *ww_class;
struct ww_class classname = { \
struct ww_class classname = { \
ww_acquire_init(struct ww_acquire_ctx *ctx, struct ww_class *ww_class) {
ctx->stamp = __sync_fetch_and_add(&ww_class->stamp, 1);
ctx->ww_class = ww_class;
ww_mutex_init(struct ww_mutex *lock, struct ww_class *ww_class) {