hwt_backend_configure
.hwt_backend_configure = pt_backend_configure,
.hwt_backend_configure = spe_backend_configure,
error = ctx->hwt_backend->ops->hwt_backend_configure(ctx, cpu_id,
int (*hwt_backend_configure)(struct hwt_context *, int cpu_id,
int hwt_backend_configure(struct hwt_context *ctx, int cpu_id, int thread_id);
hwt_backend_configure(ctx, cpu_id, thr->thread_id);
hwt_backend_configure(ctx, cpu_id, cpu_id);