linux/include/asm-alpha/param.h

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#ifndef _ASM_ALPHA_PARAM_H
#define _ASM_ALPHA_PARAM_H
/* ??? Gross. I don't want to parameterize this, and supposedly the
hardware ignores reprogramming. We also need userland buy-in to the
change in HZ, since this is visible in the wait4 resources etc. */
#include <linux/config.h>
#ifndef HZ
# ifndef CONFIG_ALPHA_RAWHIDE
# define HZ 1024
# else
# define HZ 1200
# endif
#endif
#define USER_HZ HZ
#define EXEC_PAGESIZE 8192
#ifndef NOGROUP
#define NOGROUP (-1)
#endif
#define MAXHOSTNAMELEN 64 /* max length of hostname */
#ifdef __KERNEL__
# define CLOCKS_PER_SEC HZ /* frequency at which times() counts */
#endif
#endif /* _ASM_ALPHA_PARAM_H */