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authorBob Picco <bob.picco@hp.com>2006-06-28 12:55:43 -0400
committerTony Luck <tony.luck@intel.com>2006-08-03 10:13:23 -0700
commite44e41d0c832ebbda7311a1fe43584d844026357 (patch)
tree05a8ac85029b041db8defef35bf808d431bb3528 /arch/ia64/mm/discontig.c
parent921eea1cdf6ce7f0db88e4579474a04b1fb0fe6d (diff)
downloadlinux-e44e41d0c832ebbda7311a1fe43584d844026357.tar.bz2
[IA64] fix show_mem for VIRTUAL_MEM_MAP+FLATMEM
contig.c (FLATMEM) requires the same optimization as in discontig.c for show_mem when VIRTUAL_MEM_MAP is in use. Otherwise FLATMEM has softlockup timeouts. This was boot tested for memory configuration: SPARSEMEM, DISCONTIG+VIRTUAL_MEM_MAP, FLATMEM, FLATMEM+VIRTUAL_MEM_MAP and FLATMEM+VIRTUAL_MEM_MAP with largest memory gap less than LARGE_GAP by using boot parameter "mem=". This was boot tested and "echo m >/proc/sysrq-trigger" output evaluated for : FLATMEM, FLATMEM+VIRTUAL_MEM_MAP, DISCONTIGMEM+VIRTUAL_MEM_MAP and SPARSEMEM. Signed-off-by: Bob Picco <bob.picco@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/mm/discontig.c')
-rw-r--r--arch/ia64/mm/discontig.c65
1 files changed, 2 insertions, 63 deletions
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 8eeb669917fa..d260bffa01ab 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -534,68 +534,6 @@ void __cpuinit *per_cpu_init(void)
}
#endif /* CONFIG_SMP */
-#ifdef CONFIG_VIRTUAL_MEM_MAP
-static inline int find_next_valid_pfn_for_pgdat(pg_data_t *pgdat, int i)
-{
- unsigned long end_address, hole_next_pfn;
- unsigned long stop_address;
-
- end_address = (unsigned long) &vmem_map[pgdat->node_start_pfn + i];
- end_address = PAGE_ALIGN(end_address);
-
- stop_address = (unsigned long) &vmem_map[
- pgdat->node_start_pfn + pgdat->node_spanned_pages];
-
- do {
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
-
- pgd = pgd_offset_k(end_address);
- if (pgd_none(*pgd)) {
- end_address += PGDIR_SIZE;
- continue;
- }
-
- pud = pud_offset(pgd, end_address);
- if (pud_none(*pud)) {
- end_address += PUD_SIZE;
- continue;
- }
-
- pmd = pmd_offset(pud, end_address);
- if (pmd_none(*pmd)) {
- end_address += PMD_SIZE;
- continue;
- }
-
- pte = pte_offset_kernel(pmd, end_address);
-retry_pte:
- if (pte_none(*pte)) {
- end_address += PAGE_SIZE;
- pte++;
- if ((end_address < stop_address) &&
- (end_address != ALIGN(end_address, 1UL << PMD_SHIFT)))
- goto retry_pte;
- continue;
- }
- /* Found next valid vmem_map page */
- break;
- } while (end_address < stop_address);
-
- end_address = min(end_address, stop_address);
- end_address = end_address - (unsigned long) vmem_map + sizeof(struct page) - 1;
- hole_next_pfn = end_address / sizeof(struct page);
- return hole_next_pfn - pgdat->node_start_pfn;
-}
-#else
-static inline int find_next_valid_pfn_for_pgdat(pg_data_t *pgdat, int i)
-{
- return i + 1;
-}
-#endif
-
/**
* show_mem - give short summary of memory stats
*
@@ -625,7 +563,8 @@ void show_mem(void)
if (pfn_valid(pgdat->node_start_pfn + i))
page = pfn_to_page(pgdat->node_start_pfn + i);
else {
- i = find_next_valid_pfn_for_pgdat(pgdat, i) - 1;
+ i = vmemmap_find_next_valid_pfn(pgdat->node_id,
+ i) - 1;
continue;
}
if (PageReserved(page))