diff options
Diffstat (limited to 'kernel/include/config.h')
-rw-r--r-- | kernel/include/config.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/kernel/include/config.h b/kernel/include/config.h new file mode 100644 index 0000000..a57edd4 --- /dev/null +++ b/kernel/include/config.h @@ -0,0 +1,50 @@ +/* + * FILE: config.h + * AUTHOR: kma + * DESCR: tunable kernel parameters + */ + +#pragma once + +/* Kernel and user header (via symlink) */ + +/* + * kernel configuration parameters + */ +#define DEFAULT_STACK_SIZE_PAGES 16 +#define DEFAULT_STACK_SIZE (DEFAULT_STACK_SIZE_PAGES << PAGE_SHIFT) +#define TICK_MSECS 10 /* msecs between clock interrupts */ + +/* + * Memory-management-related: + */ + +/* + * Finds fraction of available page frames that will be dedicated to kmem + * the rest are given to the vm system. This is currently unused. + */ +#define KMEM_FRAC(x) (((x) >> 2) + ((x) >> 3)) /* 37.5%-ish */ + +/* pframe/mobj-system-related: */ +#define PF_HASH_SIZE 17 /* Number of buckets in pn/mobj->pframe hash. This is currently unused. */ + +/* + * filesystem/vfs configuration parameters + */ + +#define MAXPATHLEN 1024 /* maximum size of a pathname */ +#define MAX_FILES 1024 /* max number of files */ +#define MAX_VFS 8 /* max # of vfses */ +#define MAX_VNODES 1024 /* max number of in-core vnodes */ +#define NAME_LEN 28 /* maximum directory entry length */ +#define NFILES 32 /* maximum number of open files */ + +/* Note: if rootfs is ramfs, this is completely ignored */ +#define VFS_ROOTFS_DEV "disk0" /* device containing root filesystem */ + +/* root filesystem type - either "ramfs" or "s5fs" */ +#ifdef __S5FS__ +#define VFS_ROOTFS_TYPE "s5fs" +#else +#define VFS_ROOTFS_TYPE "ramfs" +#endif |