diff options
| author | Andi Kleen <ak@suse.de> | 2005-09-12 18:49:24 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-12 19:49:56 +0200 |
| commit | 5d3d0f7704ed0bc7eaca0501eeae3e5da1ea6c87 (patch) | |
| tree | 7f1f41450a6f1880488f7fd4554a1f2bbd71d391 /mm/bootmem.c | |
| parent | [PATCH] x86-64: Avoid unnecessary double bouncing for swiotlb (diff) | |
| download | linux-5d3d0f7704ed0bc7eaca0501eeae3e5da1ea6c87.tar.xz linux-5d3d0f7704ed0bc7eaca0501eeae3e5da1ea6c87.zip | |
[PATCH] x86-64: Reverse order of bootmem lists
This leads to bootmem allocating first from node 0 instead
of from the last node. This avoids swiotlb allocating on the last node, which
doesn't really work on a machine with >4GB.
Note: there is a better patch around from someone else that gets
rid of the pgdat list completely.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/bootmem.c')
| -rw-r--r-- | mm/bootmem.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index c1330cc19783..8ec4e4c2a179 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -61,9 +61,17 @@ static unsigned long __init init_bootmem_core (pg_data_t *pgdat, { bootmem_data_t *bdata = pgdat->bdata; unsigned long mapsize = ((end - start)+7)/8; - - pgdat->pgdat_next = pgdat_list; - pgdat_list = pgdat; + static struct pglist_data *pgdat_last; + + pgdat->pgdat_next = NULL; + /* Add new nodes last so that bootmem always starts + searching in the first nodes, not the last ones */ + if (pgdat_last) + pgdat_last->pgdat_next = pgdat; + else { + pgdat_list = pgdat; + pgdat_last = pgdat; + } mapsize = ALIGN(mapsize, sizeof(long)); bdata->node_bootmem_map = phys_to_virt(mapstart << PAGE_SHIFT); |