xv6/param.h

#define NPROC        64  // maximum number of processes
#define KSTACKSIZE 4096  // size of per-process kernel stack
#define NCPU          8  // maximum number of CPUs
#define NOFILE       16  // open files per process
#define NFILE       100  // open files per system
#define NBUF         10  // size of disk block cache
#define NINODE       50  // maximum number of active i-nodes
#define NDEV         10  // maximum major device number
#define ROOTDEV       1  // device number of file system root disk
#define USERTOP  0xA0000 // end of user address space
#define PHYSTOP  0x1000000 // use phys mem up to here as free pool
#define MAXARG       32  // max exec arguments
spacing 2006-09-06 17:06:10 +00:00			`#define NPROC 64 // maximum number of processes`
kalloc/kfree now only a page at a time do not keep sorted contiguous free list 2010-08-31 16:54:47 +00:00			`#define KSTACKSIZE 4096 // size of per-process kernel stack`
spacing 2006-09-06 17:06:10 +00:00			`#define NCPU 8 // maximum number of CPUs`
struct fd -> struct file 2006-09-06 18:38:56 +00:00			`#define NOFILE 16 // open files per process`
			`#define NFILE 100 // open files per system`
spacing 2006-09-06 17:06:10 +00:00			`#define NBUF 10 // size of disk block cache`
add missing iput() at end of _namei() 2007-08-24 14:56:17 +00:00			`#define NINODE 50 // maximum number of active i-nodes`
spacing 2006-09-06 17:06:10 +00:00			`#define NDEV 10 // maximum major device number`
PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf Various changes made while offline. + bwrite sector argument is redundant; use b->sector. + reformatting of files for nicer PDF page breaks + distinguish between locked, unlocked inodes in type signatures + change FD_FILE to FD_INODE + move userinit (nee proc0init) to proc.c + move ROOTDEV to param.h + always parenthesize sizeof argument 2007-08-22 06:01:32 +00:00			`#define ROOTDEV 1 // device number of file system root disk`
copyout() copies data to a va in a pagetable, for exec() &c usertest that passes too many arguments, break exec 2010-09-27 20:14:33 +00:00			`#define USERTOP 0xA0000 // end of user address space`
kalloc/kfree now only a page at a time do not keep sorted contiguous free list 2010-08-31 16:54:47 +00:00			`#define PHYSTOP 0x1000000 // use phys mem up to here as free pool`
copyout() copies data to a va in a pagetable, for exec() &c usertest that passes too many arguments, break exec 2010-09-27 20:14:33 +00:00			`#define MAXARG 32 // max exec arguments`