korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-30 23:54:04 +08:00
Code Issues Packages Projects Releases Wiki Activity

sh: Use bootmem ontop of lmb for NUMA

Browse Source 
Like the UP case, use lmb as the foundation of memory resource
management on NUMA.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Matt Fleming 2009-07-03 23:34:51 +01:00 committed by Paul Mundt
parent c601a51af1
commit 5084f61a4d
1 changed files with 23 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
arch/sh/mm/numa.c
View File

@ -9,6 +9,7 @@
*/
#include <linux/module.h>
#include <linux/bootmem.h>
#include <linux/lmb.h>
#include <linux/mm.h>
#include <linux/numa.h>
#include <linux/pfn.h>
@ -26,6 +27,15 @@ EXPORT_SYMBOL_GPL(node_data);
void __init setup_memory(void)
{
unsigned long free_pfn = PFN_UP(__pa(_end));
u64 base = min_low_pfn << PAGE_SHIFT;
u64 size = (max_low_pfn << PAGE_SHIFT) - min_low_pfn;
lmb_add(base, size);
/* Reserve the LMB regions used by the kernel, initrd, etc.. */
lmb_reserve(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET,
(PFN_PHYS(free_pfn) + PAGE_SIZE - 1) -
(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET));
/*
* Node 0 sets up its pgdat at the first available pfn,
@ -45,24 +55,23 @@ void __init setup_memory(void)
void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
{
unsigned long bootmap_pages, bootmap_start, bootmap_size;
unsigned long start_pfn, free_pfn, end_pfn;
unsigned long bootmap_pages;
unsigned long start_pfn, end_pfn;
unsigned long bootmem_paddr;
/* Don't allow bogus node assignment */
BUG_ON(nid > MAX_NUMNODES || nid == 0);
/*
* The free pfn starts at the beginning of the range, and is
* advanced as necessary for pgdat and node map allocations.
*/
free_pfn = start_pfn = start >> PAGE_SHIFT;
start_pfn = start >> PAGE_SHIFT;
end_pfn = end >> PAGE_SHIFT;
lmb_add(start, end - start);
__add_active_range(nid, start_pfn, end_pfn);
/* Node-local pgdat */
NODE_DATA(nid) = pfn_to_kaddr(free_pfn);
free_pfn += PFN_UP(sizeof(struct pglist_data));
NODE_DATA(nid) = __va(lmb_alloc_base(sizeof(struct pglist_data),
SMP_CACHE_BYTES, end_pfn));
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
@ -71,16 +80,17 @@ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
/* Node-local bootmap */
bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
bootmap_start = (unsigned long)pfn_to_kaddr(free_pfn);
bootmap_size = init_bootmem_node(NODE_DATA(nid), free_pfn, start_pfn,
end_pfn);
bootmem_paddr = lmb_alloc_base(bootmap_pages << PAGE_SHIFT,
PAGE_SIZE, end_pfn);
init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
start_pfn, end_pfn);
free_bootmem_with_active_regions(nid, end_pfn);
/* Reserve the pgdat and bootmap space with the bootmem allocator */
reserve_bootmem_node(NODE_DATA(nid), start_pfn << PAGE_SHIFT,
sizeof(struct pglist_data), BOOTMEM_DEFAULT);
reserve_bootmem_node(NODE_DATA(nid), free_pfn << PAGE_SHIFT,
reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr,
bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
/* It's up */