diff options
| author | Johannes Weiner <hannes@saeurebad.de> | 2008-07-24 06:28:09 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 19:47:20 +0200 |
| commit | 75a56cfe9fdb064d1db1cfbc564315fddb756fb1 (patch) | |
| tree | 4b72b655e1137792a3213678416bf0541e7a3b1b /mm | |
| parent | bootmem: Make __alloc_bootmem_low_node fall back to other nodes (diff) | |
| download | linux-75a56cfe9fdb064d1db1cfbc564315fddb756fb1.tar.xz linux-75a56cfe9fdb064d1db1cfbc564315fddb756fb1.zip | |
bootmem: revisit alloc_bootmem_section
Since alloc_bootmem_core does no goal-fallback anymore and just returns
NULL if the allocation fails, we might now use it in alloc_bootmem_section
without all the fixup code for a misplaced allocation.
Also, the limit can be the first PFN of the next section as the semantics
is that the limit is _above_ the allocated region, not within.
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/bootmem.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index 459da4710b8f..282b786c2b15 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -632,30 +632,15 @@ void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, void * __init alloc_bootmem_section(unsigned long size, unsigned long section_nr) { - void *ptr; - unsigned long limit, goal, start_nr, end_nr, pfn; - struct pglist_data *pgdat; + bootmem_data_t *bdata; + unsigned long pfn, goal, limit; pfn = section_nr_to_pfn(section_nr); - goal = PFN_PHYS(pfn); - limit = PFN_PHYS(section_nr_to_pfn(section_nr + 1)) - 1; - pgdat = NODE_DATA(early_pfn_to_nid(pfn)); - ptr = alloc_bootmem_core(pgdat->bdata, size, SMP_CACHE_BYTES, goal, - limit); - - if (!ptr) - return NULL; - - start_nr = pfn_to_section_nr(PFN_DOWN(__pa(ptr))); - end_nr = pfn_to_section_nr(PFN_DOWN(__pa(ptr) + size)); - if (start_nr != section_nr || end_nr != section_nr) { - printk(KERN_WARNING "alloc_bootmem failed on section %ld.\n", - section_nr); - free_bootmem_node(pgdat, __pa(ptr), size); - ptr = NULL; - } + goal = pfn << PAGE_SHIFT; + limit = section_nr_to_pfn(section_nr + 1) << PAGE_SHIFT; + bdata = &bootmem_node_data[early_pfn_to_nid(pfn)]; - return ptr; + return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, limit); } #endif |