m68k: discontinuous memory support
Fix support for discontinuous memory
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
index ab90213..f1de19e 100644
--- a/arch/m68k/mm/init.c
+++ b/arch/m68k/mm/init.c
@@ -7,6 +7,7 @@
* to motorola.c and sun3mmu.c
*/
+#include <linux/module.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/mm.h>
@@ -31,6 +32,37 @@
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+static bootmem_data_t __initdata bootmem_data[MAX_NUMNODES];
+
+pg_data_t pg_data_map[MAX_NUMNODES];
+EXPORT_SYMBOL(pg_data_map);
+
+int m68k_virt_to_node_shift;
+
+#ifndef CONFIG_SINGLE_MEMORY_CHUNK
+pg_data_t *pg_data_table[65];
+EXPORT_SYMBOL(pg_data_table);
+#endif
+
+void m68k_setup_node(int node)
+{
+#ifndef CONFIG_SINGLE_MEMORY_CHUNK
+ struct mem_info *info = m68k_memory + node;
+ int i, end;
+
+ i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift();
+ end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift();
+ for (; i <= end; i++) {
+ if (pg_data_table[i])
+ printk("overlap at %u for chunk %u\n", i, node);
+ pg_data_table[i] = pg_data_map + node;
+ }
+#endif
+ pg_data_map[node].bdata = bootmem_data + node;
+ node_set_online(node);
+}
+
+
/*
* ZERO_PAGE is a special page that is used for zero-initialized
* data and COW.
@@ -40,52 +72,51 @@
void show_mem(void)
{
- unsigned long i;
- int free = 0, total = 0, reserved = 0, shared = 0;
- int cached = 0;
+ pg_data_t *pgdat;
+ int free = 0, total = 0, reserved = 0, shared = 0;
+ int cached = 0;
+ int i;
- printk("\nMem-info:\n");
- show_free_areas();
- printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- i = max_mapnr;
- while (i-- > 0) {
- total++;
- if (PageReserved(mem_map+i))
- reserved++;
- else if (PageSwapCache(mem_map+i))
- cached++;
- else if (!page_count(mem_map+i))
- free++;
- else
- shared += page_count(mem_map+i) - 1;
- }
- printk("%d pages of RAM\n",total);
- printk("%d free pages\n",free);
- printk("%d reserved pages\n",reserved);
- printk("%d pages shared\n",shared);
- printk("%d pages swap cached\n",cached);
+ printk("\nMem-info:\n");
+ show_free_areas();
+ printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
+ for_each_online_pgdat(pgdat) {
+ for (i = 0; i < pgdat->node_spanned_pages; i++) {
+ struct page *page = pgdat->node_mem_map + i;
+ total++;
+ if (PageReserved(page))
+ reserved++;
+ else if (PageSwapCache(page))
+ cached++;
+ else if (!page_count(page))
+ free++;
+ else
+ shared += page_count(page) - 1;
+ }
+ }
+ printk("%d pages of RAM\n",total);
+ printk("%d free pages\n",free);
+ printk("%d reserved pages\n",reserved);
+ printk("%d pages shared\n",shared);
+ printk("%d pages swap cached\n",cached);
}
extern void init_pointer_table(unsigned long ptable);
/* References to section boundaries */
-extern char _text, _etext, _edata, __bss_start, _end;
-extern char __init_begin, __init_end;
+extern char _text[], _etext[];
+extern char __init_begin[], __init_end[];
extern pmd_t *zero_pgtable;
void __init mem_init(void)
{
+ pg_data_t *pgdat;
int codepages = 0;
int datapages = 0;
int initpages = 0;
- unsigned long tmp;
-#ifndef CONFIG_SUN3
int i;
-#endif
-
- max_mapnr = num_physpages = (((unsigned long)high_memory - PAGE_OFFSET) >> PAGE_SHIFT);
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI)
@@ -93,19 +124,25 @@
#endif
/* this will put all memory onto the freelists */
- totalram_pages = free_all_bootmem();
+ totalram_pages = num_physpages = 0;
+ for_each_online_pgdat(pgdat) {
+ num_physpages += pgdat->node_present_pages;
- for (tmp = PAGE_OFFSET ; tmp < (unsigned long)high_memory; tmp += PAGE_SIZE) {
- if (PageReserved(virt_to_page(tmp))) {
- if (tmp >= (unsigned long)&_text
- && tmp < (unsigned long)&_etext)
+ totalram_pages += free_all_bootmem_node(pgdat);
+ for (i = 0; i < pgdat->node_spanned_pages; i++) {
+ struct page *page = pgdat->node_mem_map + i;
+ char *addr = page_to_virt(page);
+
+ if (!PageReserved(page))
+ continue;
+ if (addr >= _text &&
+ addr < _etext)
codepages++;
- else if (tmp >= (unsigned long) &__init_begin
- && tmp < (unsigned long) &__init_end)
+ else if (addr >= __init_begin &&
+ addr < __init_end)
initpages++;
else
datapages++;
- continue;
}
}
@@ -124,7 +161,7 @@
printk("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init)\n",
(unsigned long)nr_free_pages() << (PAGE_SHIFT-10),
- max_mapnr << (PAGE_SHIFT-10),
+ totalram_pages << (PAGE_SHIFT-10),
codepages << (PAGE_SHIFT-10),
datapages << (PAGE_SHIFT-10),
initpages << (PAGE_SHIFT-10));