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Introduce new function malloc_roundup(), suggested by Bill Sommerfeld 

on tech-kern.
This commit is contained in:
enami 2001-12-05 01:29:04 +00:00
parent 037eb62a0f
commit 996ee10484
2 changed files with 18 additions and 3 deletions
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17
sys/kern/kern_malloc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: kern_malloc.c,v 1.69 2001/12/04 23:56:36 enami Exp $ */
/* $NetBSD: kern_malloc.c,v 1.70 2001/12/05 01:29:04 enami Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_malloc.c,v 1.69 2001/12/04 23:56:36 enami Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_malloc.c,v 1.70 2001/12/05 01:29:04 enami Exp $");
#include "opt_lockdebug.h"
@ -625,6 +625,19 @@ realloc(void *curaddr, unsigned long newsize, int type, int flags)
return (newaddr);
}
/*
* Roundup size to the actual allocation size.
*/
unsigned long
malloc_roundup(unsigned long size)
{
if (size > MAXALLOCSAVE)
return (roundup(size, PAGE_SIZE));
else
return (1 << BUCKETINDX(size));
}
/*
* Compute the number of pages that kmem_map will map, that is,
* the size of the kernel malloc arena.

4
sys/sys/malloc.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: malloc.h,v 1.71 2001/12/05 00:00:10 enami Exp $ */
/* $NetBSD: malloc.h,v 1.72 2001/12/05 01:29:05 enami Exp $ */
/*
* Copyright (c) 1987, 1993
@ -457,5 +457,7 @@ void debug_malloc_printit(void (*)(const char *, ...), vaddr_t);
void *realloc(void *curaddr, unsigned long newsize, int type,
int flags);
unsigned long
malloc_roundup(unsigned long);
#endif /* _KERNEL */
#endif /* !_SYS_MALLOC_H_ */