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Implement uma_small_alloc(), uma_small_free().

Browse Source 
Reviewed by:	markj
Obtained from:	arm64
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D16628
This commit is contained in:
br 2018-08-08 16:08:38 +00:00
parent 90e4307d1b
commit 4343ee33f4
2 changed files with 30 additions and 6 deletions
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5
sys/riscv/include/vmparam.h
View File

@ -223,10 +223,7 @@
#define VM_INITIAL_PAGEIN 16
#endif
/*
* RISCVTODO
* #define UMA_MD_SMALL_ALLOC
*/
#define UMA_MD_SMALL_ALLOC
#ifndef LOCORE
extern vm_paddr_t dmap_phys_base;

31
sys/riscv/riscv/uma_machdep.c
View File

@ -32,6 +32,7 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <sys/vmmeter.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
@ -44,13 +45,39 @@ void *
uma_small_alloc(uma_zone_t zone, vm_size_t bytes, int domain, u_int8_t *flags,
int wait)
{
vm_page_t m;
vm_paddr_t pa;
void *va;
panic("uma_small_alloc");
*flags = UMA_SLAB_PRIV;
m = vm_page_alloc_domain(NULL, 0, domain,
malloc2vm_flags(wait) | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED);
if (m == NULL)
return (NULL);
pa = m->phys_addr;
#if 0
/* RISCVTODO: minidump */
if ((wait & M_NODUMP) == 0)
dump_add_page(pa);
#endif
va = (void *)PHYS_TO_DMAP(pa);
if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
bzero(va, PAGE_SIZE);
return (va);
}
void
uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
{
vm_page_t m;
vm_paddr_t pa;
panic("uma_small_free");
pa = DMAP_TO_PHYS((vm_offset_t)mem);
#if 0
/* RISCVTODO: minidump */
dump_drop_page(pa);
#endif
m = PHYS_TO_VM_PAGE(pa);
vm_page_unwire_noq(m);
vm_page_free(m);
}