On Thu, Jan 27, 2022 at 02:21:24PM +0100, Karolina Drobnik wrote: > +++ b/tools/include/linux/cache.h > @@ -0,0 +1,10 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _TOOLS_LINUX_CACHE_H > +#define _TOOLS_LINUX_CACHE_H > + > +#define L1_CACHE_SHIFT 5 > +#define L1_CACHE_BYTES BIT(L1_CACHE_SHIFT) > + > +#define SMP_CACHE_BYTES L1_CACHE_BYTES > + > +#endif You've added an implicit dependency on include/vdso/bits.h which seems unpleasant ...