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2013-10-10 Sebastian Huber <sebastian.huber@embedded-brains.de> 

* libc/libc/sys/rtems/sys/param.h: Update some parameters to
	the latest FreeBSD values.
This commit is contained in:
Joel Sherrill 2013-10-15 17:40:02 +00:00
parent 50eb944a7c
commit 77e22783e4
2 changed files with 38 additions and 23 deletions
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5
newlib/ChangeLog
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@ -1,3 +1,8 @@
2013-10-10 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/libc/sys/rtems/sys/param.h: Update some parameters to
the latest FreeBSD values.
2013-10-10 Sebastian Huber <sebastian.huber@embedded-brains.de>
* libc/sys/rtems/machine/_types.h (_HAVE_SYSTYPES): Define.

56
newlib/libc/sys/rtems/sys/param.h
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@ -66,19 +66,19 @@
* Redefined constants are from POSIX 1003.1 limits file.
*
* MAXCOMLEN should be >= sizeof(ac_comm) (see <acct.h>)
* MAXLOGNAME should be >= UT_NAMESIZE (see <utmp.h>)
*/
#include <sys/syslimits.h>
#define MAXCOMLEN 16 /* max command name remembered */
#define MAXINTERP 32 /* max interpreter file name length */
#define MAXLOGNAME 12 /* max login name length */
#define MAXCOMLEN 19 /* max command name remembered */
#define MAXINTERP PATH_MAX /* max interpreter file name length */
#define MAXLOGNAME 33 /* max login name length (incl. NUL) */
#define MAXUPRC CHILD_MAX /* max simultaneous processes */
#define NCARGS ARG_MAX /* max bytes for an exec function */
#define NGROUPS NGROUPS_MAX /* max number groups */
#define NGROUPS (NGROUPS_MAX+1) /* max number groups */
#define NOFILE OPEN_MAX /* max open files per process */
#define NOGROUP 65535 /* marker for empty group set member */
#define MAXHOSTNAMELEN 256 /* max hostname size */
#define SPECNAMELEN 63 /* max length of devicename */
/* More types and definitions used throughout the kernel. */
#if defined(KERNEL) || defined(_KERNEL)
@ -123,21 +123,29 @@
/*
* File system parameters and macros.
*
* The file system is made out of blocks of at most MAXBSIZE units, with
* smaller units (fragments) only in the last direct block. MAXBSIZE
* primarily determines the size of buffers in the buffer pool. It may be
* made larger without any effect on existing file systems; however making
* it smaller make make some file systems unmountable. Also, MAXBSIZE
* must be less than MAXPHYS!!! DFLTBSIZE is the average amount of
* memory allocated by vfs_bio per nbuf. BKVASIZE is the average amount
* of kernel virtual space allocated per nbuf. BKVASIZE should be >=
* DFLTBSIZE. If it is significantly bigger than DFLTBSIZE, then
* kva fragmentation causes fewer performance problems.
* MAXBSIZE - Filesystems are made out of blocks of at most MAXBSIZE bytes
* per block. MAXBSIZE may be made larger without effecting
* any existing filesystems as long as it does not exceed MAXPHYS,
* and may be made smaller at the risk of not being able to use
* filesystems which require a block size exceeding MAXBSIZE.
*
* BKVASIZE - Nominal buffer space per buffer, in bytes. BKVASIZE is the
* minimum KVM memory reservation the kernel is willing to make.
* Filesystems can of course request smaller chunks. Actual
* backing memory uses a chunk size of a page (PAGE_SIZE).
*
* If you make BKVASIZE too small you risk seriously fragmenting
* the buffer KVM map which may slow things down a bit. If you
* make it too big the kernel will not be able to optimally use
* the KVM memory reserved for the buffer cache and will wind
* up with too-few buffers.
*
* The default is 16384, roughly 2x the block size used by a
* normal UFS filesystem.
*/
#define MAXBSIZE 65536
#define BKVASIZE 8192
#define DFLTBSIZE 4096
#define MAXFRAG 8
#define MAXBSIZE 65536 /* must be power of 2 */
#define BKVASIZE 16384 /* must be power of 2 */
#define BKVAMASK (BKVASIZE-1)
/*
* MAXPATHLEN defines the longest permissible path length after expanding
@ -154,10 +162,12 @@
#define MAXSYMLINKS 32
/* Bit map related macros. */
#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
#define setbit(a,i) (((unsigned char *)(a))[(i)/NBBY] |= 1<<((i)%NBBY))
#define clrbit(a,i) (((unsigned char *)(a))[(i)/NBBY] &= ~(1<<((i)%NBBY)))
#define isset(a,i) \
(((const unsigned char *)(a))[(i)/NBBY] & (1<<((i)%NBBY)))
#define isclr(a,i) \
((((const unsigned char *)(a))[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
/* Macros for counting and rounding. */
#ifndef howmany