This stack check implementation leverages the compiler's profiling (gcc -p)

[linux-2.6.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 072d138..675b061 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -33,6 +33,7 @@
 #include <linux/cpu.h>
 #include <linux/vs_base.h>
 #include <linux/vs_limit.h>
+#include <linux/ckrm_mem_inline.h>
 
 #include <asm/tlbflush.h>
 
@@ -276,6 +277,7 @@ free_pages_bulk(struct zone *zone, int count,
                /* have to delete it as __free_pages_bulk list manipulates */
                list_del(&page->lru);
                __free_pages_bulk(page, base, zone, area, order);
+               ckrm_clear_page_class(page);
                ret++;
        }
        spin_unlock_irqrestore(&zone->lock, flags);
@@ -622,6 +624,10 @@ __alloc_pages(unsigned int gfp_mask, unsigned int order,
 
        might_sleep_if(wait);
 
+       if (!ckrm_class_limit_ok((GET_MEM_CLASS(current)))) {
+               return NULL;
+       }
+
        zones = zonelist->zones;  /* the list of zones suitable for gfp_mask */
        if (zones[0] == NULL)     /* no zones in the zonelist */
                return NULL;
@@ -751,6 +757,7 @@ nopage:
        return NULL;
 got_pg:
        kernel_map_pages(page, 1 << order, 1);
+       ckrm_set_pages_class(page, 1 << order, GET_MEM_CLASS(current));
        return page;
 }
 
@@ -837,17 +844,6 @@ unsigned int nr_free_pages(void)
 
 EXPORT_SYMBOL(nr_free_pages);
 
-unsigned int nr_used_zone_pages(void)
-{
-       unsigned int pages = 0;
-       struct zone *zone;
-
-       for_each_zone(zone)
-               pages += zone->nr_active + zone->nr_inactive;
-
-       return pages;
-}
-
 #ifdef CONFIG_NUMA
 unsigned int nr_free_pages_pgdat(pg_data_t *pgdat)
 {
@@ -1395,7 +1391,7 @@ static void __init calculate_zone_totalpages(struct pglist_data *pgdat,
                for (i = 0; i < MAX_NR_ZONES; i++)
                        realtotalpages -= zholes_size[i];
        pgdat->node_present_pages = realtotalpages;
-       printk("On node %d totalpages: %lu\n", pgdat->node_id, realtotalpages);
+       printk(KERN_DEBUG "On node %d totalpages: %lu\n", pgdat->node_id, realtotalpages);
 }
 
 
@@ -1416,7 +1412,7 @@ void __init memmap_init_zone(struct page *start, unsigned long size, int nid,
                INIT_LIST_HEAD(&page->lru);
 #ifdef WANT_PAGE_VIRTUAL
                /* The shift won't overflow because ZONE_NORMAL is below 4G. */
-               if (!is_highmem(zone))
+               if (!is_highmem_idx(zone))
                        set_page_address(page, __va(start_pfn << PAGE_SHIFT));
 #endif
                start_pfn++;
@@ -1501,7 +1497,7 @@ static void __init free_area_init_core(struct pglist_data *pgdat,
                        pcp->batch = 1 * batch;
                        INIT_LIST_HEAD(&pcp->list);
                }
-               printk("  %s zone: %lu pages, LIFO batch:%lu\n",
+               printk(KERN_DEBUG "  %s zone: %lu pages, LIFO batch:%lu\n",
                                zone_names[j], realsize, batch);
                INIT_LIST_HEAD(&zone->active_list);
                INIT_LIST_HEAD(&zone->inactive_list);
@@ -1980,9 +1976,9 @@ module_init(init_per_zone_pages_min)
  *     changes.
  */
 int min_free_kbytes_sysctl_handler(ctl_table *table, int write, 
-               struct file *file, void __user *buffer, size_t *length)
+               struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
 {
-       proc_dointvec(table, write, file, buffer, length);
+       proc_dointvec(table, write, file, buffer, length, ppos);
        setup_per_zone_pages_min();
        setup_per_zone_protection();
        return 0;
@@ -1994,9 +1990,9 @@ int min_free_kbytes_sysctl_handler(ctl_table *table, int write,
  *     whenever sysctl_lower_zone_protection changes.
  */
 int lower_zone_protection_sysctl_handler(ctl_table *table, int write,
-                struct file *file, void __user *buffer, size_t *length)
+                struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
 {
-       proc_dointvec_minmax(table, write, file, buffer, length);
+       proc_dointvec_minmax(table, write, file, buffer, length, ppos);
        setup_per_zone_protection();
        return 0;
 }