minix3/include/minix/config.h

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2020-02-21 00:59:27 +05:30
#ifndef _CONFIG_H
#define _CONFIG_H
/* Minix release and version numbers. */
#define OS_NAME "Minix"
#define OS_RELEASE "3.3.0"
#define OS_CONFIG "GENERIC"
#define OS_VERSION OS_NAME " " OS_RELEASE " (" OS_CONFIG ")"
/* This file sets configuration parameters for the MINIX kernel, FS, and PM.
* It is divided up into two main sections. The first section contains
* user-settable parameters. In the second section, various internal system
* parameters are set based on the user-settable parameters.
*
* Parts of config.h have been moved to sys_config.h, which can be included
* by other include files that wish to get at the configuration data, but
* don't want to pollute the users namespace. Some editable values have
* gone there.
*
*/
#include <minix/sys_config.h>
/* Number of slots in the process table for non-kernel processes. The number
* of system processes defines how many processes with special privileges
* there can be. User processes share the same properties and count for one.
*
* These can be changed in sys_config.h.
*/
#define NR_PROCS _NR_PROCS
#define NR_SYS_PROCS _NR_SYS_PROCS
#define NR_SYS_CHUNKS BITMAP_CHUNKS(NR_SYS_PROCS)
/* Number of controller tasks (/dev/cN device classes). */
#define NR_CTRLRS 2
/* DMA_SECTORS may be increased to speed up DMA based drivers. */
#define DMA_SECTORS 1 /* DMA buffer size (must be >= 1) */
/* NR_CONS, NR_RS_LINES, and NR_PTYS determine the number of terminals the
* system can handle.
*/
#define NR_CONS 4 /* # system consoles (1 to 8) */
#define NR_RS_LINES 4 /* # rs232 terminals (0 to 3) */
#define NR_PTYS 32 /* # pseudo terminals (0 to 64) */
/* This feature enable the counting of system calls in PM and FS */
#define ENABLE_SYSCALL_STATS 0
/* Max. number of I/O ranges that can be assigned to a process */
#define NR_IO_RANGE 64
/* Max. number of device memory ranges that can be assigned to a process */
#define NR_MEM_RANGE 20
/* Max. number of IRQs that can be assigned to a process */
#define NR_IRQ 16
/* Scheduling priorities. Values must start at zero (highest
* priority) and increment.
*/
#define NR_SCHED_QUEUES 16 /* MUST equal minimum priority + 1 */
#define TASK_Q 0 /* highest, used for kernel tasks */
#define MAX_USER_Q 0 /* highest priority for user processes */
#define USER_Q ((MIN_USER_Q - MAX_USER_Q) / 2 + MAX_USER_Q) /* default
(should correspond to nice 0) */
#define MIN_USER_Q (NR_SCHED_QUEUES - 1) /* minimum priority for user
processes */
/* default scheduling quanta */
#define USER_QUANTUM 200
/* defualt user process cpu */
#define USER_DEFAULT_CPU -1 /* use the default cpu or do not change the
current one */
/*===========================================================================*
* There are no user-settable parameters after this line *
*===========================================================================*/
/* Set the FP_FORMAT type based on the machine selected, either hw or sw */
#define FP_NONE _FP_NONE /* no floating point support */
#define FP_IEEE _FP_IEEE /* conform IEEE floating point standard */
/* _MINIX_FP_FORMAT is defined in sys_config.h. */
#define FP_FORMAT _MINIX_FP_FORMAT
/* _ASKDEV and _FASTLOAD are defined in sys_config.h. */
#define ASKDEV _ASKDEV
#define FASTLOAD _FASTLOAD
/* Enable or disable system profiling. */
#define SPROFILE 0 /* statistical profiling */
#define CPROFILE 0 /* call profiling */
/* PCI configuration parameters */
#define NR_PCIBUS 40
#define NR_PCIDEV 50
#endif /* _CONFIG_H */