minix/kernel/config.h
2005-08-22 15:23:47 +00:00

83 lines
3.8 KiB
C

#ifndef CONFIG_H
#define CONFIG_H
/* This file defines the kernel configuration. It allows to set sizes of some
* kernel buffers and to enable or disable debugging code, timing features,
* and individual kernel calls.
*
* Changes:
* Jul 11, 2005 Created. (Jorrit N. Herder)
*/
/* In embedded and sensor applications, not all the kernel calls may be
* needed. In this section you can specify which kernel calls are needed
* and which are not. The code for unneeded kernel calls is not included in
* the system binary, making it smaller. If you are not sure, it is best
* to keep all kernel calls enabled.
*/
#define USE_FORK 1 /* fork a new process */
#define USE_NEWMAP 1 /* set a new memory map */
#define USE_EXEC 1 /* update process after execute */
#define USE_EXIT 1 /* clean up after process exit */
#define USE_TRACE 1 /* process information and tracing */
#define USE_GETKSIG 1 /* retrieve pending kernel signals */
#define USE_ENDKSIG 1 /* finish pending kernel signals */
#define USE_KILL 1 /* send a signal to a process */
#define USE_SIGSEND 1 /* send POSIX-style signal */
#define USE_SIGRETURN 1 /* sys_sigreturn(proc_nr, ctxt_ptr, flags) */
#define USE_ABORT 1 /* shut down MINIX */
#define USE_GETINFO 1 /* retrieve a copy of kernel data */
#define USE_TIMES 1 /* get process and system time info */
#define USE_SETALARM 1 /* schedule a synchronous alarm */
#define USE_DEVIO 1 /* read or write a single I/O port */
#define USE_VDEVIO 1 /* process vector with I/O requests */
#define USE_SDEVIO 1 /* perform I/O request on a buffer */
#define USE_IRQCTL 1 /* set an interrupt policy */
#define USE_SEGCTL 1 /* set up a remote segment */
#define USE_PRIVCTL 1 /* system privileges control */
#define USE_NICE 1 /* change scheduling priority */
#define USE_UMAP 1 /* map virtual to physical address */
#define USE_VIRCOPY 1 /* copy using virtual addressing */
#define USE_VIRVCOPY 1 /* vector with virtual copy requests */
#define USE_PHYSCOPY 1 /* copy using physical addressing */
#define USE_PHYSVCOPY 1 /* vector with physical copy requests */
#define USE_MEMSET 1 /* write char to a given memory area */
/* Length of program names stored in the process table. This is only used
* for the debugging dumps that can be generated with the IS server. The PM
* server keeps its own copy of the program name.
*/
#define P_NAME_LEN 8
/* Kernel diagnostics are written to a circular buffer. After each message,
* a system server is notified and a copy of the buffer can be retrieved to
* display the message. The buffers size can safely be reduced.
*/
#define KMESS_BUF_SIZE 256
/* Buffer to gather randomness. This is used to generate a random stream by
* the MEMORY driver when reading from /dev/random.
*/
#define RANDOM_ELEMENTS 32
/* This section contains defines for valuable system resources that are used
* by device drivers. The number of elements of the vectors is determined by
* the maximum needed by any given driver. The number of interrupt hooks may
* be incremented on systems with many device drivers.
*/
#define NR_IRQ_HOOKS 16 /* number of interrupt hooks */
#define VDEVIO_BUF_SIZE 64 /* max elements per VDEVIO request */
#define VCOPY_VEC_SIZE 16 /* max elements per VCOPY request */
/* How many bytes for the kernel stack. Space allocated in mpx.s. */
#define K_STACK_BYTES 1024
/* This section allows to enable kernel debugging and timing functionality.
* For normal operation all options should be disabled.
*/
#define DEBUG_SCHED_CHECK 0 /* sanity check of scheduling queues */
#define DEBUG_LOCK_CHECK 0 /* kernel lock() sanity check */
#define DEBUG_TIME_LOCKS 0 /* measure time spent in locks */
#endif /* CONFIG_H */