From 0abd39d1e229df605dd5f5826ff1b4904cfc1bb9 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 23 Jul 2008 21:26:58 -0700 Subject: [PATCH] --- yaml --- r: 105262 b: refs/heads/master c: 6b312c0e6e2f44b020e12953d1dd37eed60e3609 h: refs/heads/master v: v3 --- [refs] | 2 +- trunk/mm/bootmem.c | 21 ++++++++++----------- 2 files changed, 11 insertions(+), 12 deletions(-) diff --git a/[refs] b/[refs] index c07b3a991e09..e867a9a72ab0 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: b61bfa3c462671c48a51fb5c31af337c5a996a04 +refs/heads/master: 6b312c0e6e2f44b020e12953d1dd37eed60e3609 diff --git a/trunk/mm/bootmem.c b/trunk/mm/bootmem.c index 35b3cb667036..319a79bce7cd 100644 --- a/trunk/mm/bootmem.c +++ b/trunk/mm/bootmem.c @@ -377,7 +377,7 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat) struct page *page; unsigned long pfn; bootmem_data_t *bdata = pgdat->bdata; - unsigned long i, count, total = 0; + unsigned long i, count; unsigned long idx; unsigned long *map; int gofast = 0; @@ -389,10 +389,13 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat) pfn = PFN_DOWN(bdata->node_boot_start); idx = bdata->node_low_pfn - pfn; map = bdata->node_bootmem_map; - /* Check physaddr is O(LOG2(BITS_PER_LONG)) page aligned */ - if (bdata->node_boot_start == 0 || - ffs(bdata->node_boot_start) - PAGE_SHIFT > ffs(BITS_PER_LONG)) + /* + * Check if we are aligned to BITS_PER_LONG pages. If so, we might + * be able to free page orders of that size at once. + */ + if (!(pfn & (BITS_PER_LONG-1))) gofast = 1; + for (i = 0; i < idx; ) { unsigned long v = ~map[i / BITS_PER_LONG]; @@ -420,23 +423,19 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat) } pfn += BITS_PER_LONG; } - total += count; /* * Now free the allocator bitmap itself, it's not * needed anymore: */ page = virt_to_page(bdata->node_bootmem_map); - count = 0; idx = (get_mapsize(bdata) + PAGE_SIZE-1) >> PAGE_SHIFT; - for (i = 0; i < idx; i++, page++) { + for (i = 0; i < idx; i++, page++) __free_pages_bootmem(page, 0); - count++; - } - total += count; + count += i; bdata->node_bootmem_map = NULL; - return total; + return count; } unsigned long __init init_bootmem_node(pg_data_t *pgdat, unsigned long freepfn,