diff options
Diffstat (limited to 'mm/bootmem.c')
| -rw-r--r-- | mm/bootmem.c | 51 |
1 files changed, 44 insertions, 7 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index 105ad4cff2e1..4e085ee1d98e 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -34,6 +34,22 @@ unsigned long saved_max_pfn; bootmem_data_t bootmem_node_data[MAX_NUMNODES] __initdata; +static int bootmem_debug; + +static int __init bootmem_debug_setup(char *buf) +{ + bootmem_debug = 1; + return 0; +} +early_param("bootmem_debug", bootmem_debug_setup); + +#define bdebug(fmt, args...) ({ \ + if (unlikely(bootmem_debug)) \ + printk(KERN_INFO \ + "bootmem::%s " fmt, \ + __FUNCTION__, ## args); \ +}) + /* * Given an initialised bdata, it returns the size of the boot bitmap */ @@ -104,6 +120,9 @@ static unsigned long __init init_bootmem_core(bootmem_data_t *bdata, mapsize = get_mapsize(bdata); memset(bdata->node_bootmem_map, 0xff, mapsize); + bdebug("nid=%td start=%lx map=%lx end=%lx mapsize=%lx\n", + bdata - bootmem_node_data, start, mapstart, end, mapsize); + return mapsize; } @@ -198,6 +217,8 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata) count += i; bdata->node_bootmem_map = NULL; + bdebug("nid=%td released=%lx\n", bdata - bootmem_node_data, count); + return count; } @@ -255,6 +276,10 @@ static void __init free_bootmem_core(bootmem_data_t *bdata, unsigned long addr, if (eidx > bdata->node_low_pfn - PFN_DOWN(bdata->node_boot_start)) eidx = bdata->node_low_pfn - PFN_DOWN(bdata->node_boot_start); + bdebug("nid=%td start=%lx end=%lx\n", bdata - bootmem_node_data, + sidx + PFN_DOWN(bdata->node_boot_start), + eidx + PFN_DOWN(bdata->node_boot_start)); + for (i = sidx; i < eidx; i++) { if (unlikely(!test_and_clear_bit(i, bdata->node_bootmem_map))) BUG(); @@ -360,13 +385,16 @@ static void __init reserve_bootmem_core(bootmem_data_t *bdata, if (eidx > bdata->node_low_pfn - PFN_DOWN(bdata->node_boot_start)) eidx = bdata->node_low_pfn - PFN_DOWN(bdata->node_boot_start); - for (i = sidx; i < eidx; i++) { - if (test_and_set_bit(i, bdata->node_bootmem_map)) { -#ifdef CONFIG_DEBUG_BOOTMEM - printk("hm, page %08lx reserved twice.\n", i*PAGE_SIZE); -#endif - } - } + bdebug("nid=%td start=%lx end=%lx flags=%x\n", + bdata - bootmem_node_data, + sidx + PFN_DOWN(bdata->node_boot_start), + eidx + PFN_DOWN(bdata->node_boot_start), + flags); + + for (i = sidx; i < eidx; i++) + if (test_and_set_bit(i, bdata->node_bootmem_map)) + bdebug("hm, page %lx reserved twice.\n", + PFN_DOWN(bdata->node_boot_start) + i); } /** @@ -455,6 +483,10 @@ alloc_bootmem_core(struct bootmem_data *bdata, unsigned long size, if (!bdata->node_bootmem_map) return NULL; + bdebug("nid=%td size=%lx [%lu pages] align=%lx goal=%lx limit=%lx\n", + bdata - bootmem_node_data, size, PAGE_ALIGN(size) >> PAGE_SHIFT, + align, goal, limit); + /* bdata->node_boot_start is supposed to be (12+6)bits alignment on x86_64 ? */ node_boot_start = bdata->node_boot_start; node_bootmem_map = bdata->node_bootmem_map; @@ -562,6 +594,11 @@ found: ret = phys_to_virt(start * PAGE_SIZE + node_boot_start); } + bdebug("nid=%td start=%lx end=%lx\n", + bdata - bootmem_node_data, + start + PFN_DOWN(bdata->node_boot_start), + start + areasize + PFN_DOWN(bdata->node_boot_start)); + /* * Reserve the area now: */ |