linux/include/asm-x86_64/param.h

#ifndef _ASMx86_64_PARAM_H
#define _ASMx86_64_PARAM_H

#ifdef __KERNEL__
# define HZ            CONFIG_HZ	/* Internal kernel timer frequency */
# define USER_HZ       100		/* .. some user interfaces are in "ticks */
#define CLOCKS_PER_SEC        (USER_HZ)       /* like times() */
#endif

#ifndef HZ
#define HZ 100
#endif

#define EXEC_PAGESIZE	4096

#ifndef NOGROUP
#define NOGROUP		(-1)
#endif

#define MAXHOSTNAMELEN	64	/* max length of hostname */

#endif
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`#ifndef _ASMx86_64_PARAM_H`
			`#define _ASMx86_64_PARAM_H`

			`#ifdef __KERNEL__`
[PATCH] i386: Selectable Frequency of the Timer Interrupt Make the timer frequency selectable. The timer interrupt may cause bus and memory contention in large NUMA systems since the interrupt occurs on each processor HZ times per second. Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 2005-06-23 00:08:25 -07:00			`# define HZ CONFIG_HZ /* Internal kernel timer frequency */`
			`# define USER_HZ 100 /* .. some user interfaces are in "ticks */`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`#define CLOCKS_PER_SEC (USER_HZ) /* like times() */`
			`#endif`

			`#ifndef HZ`
			`#define HZ 100`
			`#endif`

			`#define EXEC_PAGESIZE 4096`

			`#ifndef NOGROUP`
			`#define NOGROUP (-1)`
			`#endif`

			`#define MAXHOSTNAMELEN 64 /* max length of hostname */`

			`#endif`