/* * vlock.h - simple voting lock implementation * * Created by: Dave Martin, 2012-08-16 * Copyright: (C) 2012-2013 Linaro Limited * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __VLOCK_H #define __VLOCK_H #include /* Offsets and sizes are rounded to a word (4 bytes) */ #define VLOCK_OWNER_OFFSET 0 #define VLOCK_VOTING_OFFSET 4 #define VLOCK_VOTING_SIZE ((MAX_CPUS_PER_CLUSTER + 3) / 4 * 4) #define VLOCK_SIZE (VLOCK_VOTING_OFFSET + VLOCK_VOTING_SIZE) #define VLOCK_OWNER_NONE 0 #endif /* ! __VLOCK_H */