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author | Bob Picco <bob.picco@hp.com> | 2007-01-30 10:11:09 (GMT) |
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committer | Tony Luck <tony.luck@intel.com> | 2007-02-05 23:07:47 (GMT) |
commit | 139b830477ccdca21b68c40f9a83ec327e65eb56 (patch) | |
tree | 0aab2140315579525dfef89189b9bea5033af2ba /arch/ia64/kernel/vmlinux.lds.S | |
parent | d1598e05faa11d9f04e0a226122dd57674fb1dab (diff) | |
download | linux-fsl-qoriq-139b830477ccdca21b68c40f9a83ec327e65eb56.tar.xz |
[IA64] register memory ranges in a consistent manner
While pursuing and unrelated issue with 64Mb granules I noticed a problem
related to inconsistent use of add_active_range. There doesn't appear any
reason to me why FLATMEM versus DISCONTIG_MEM should register memory to
add_active_range with different code. So I've changed the code into a
common implementation.
The other subtle issue fixed by this patch was calling add_active_range in
count_node_pages before granule aligning is performed. We were lucky with
16MB granules but not so with 64MB granules. count_node_pages has reserved
regions filtered out and as a consequence linked kernel text and data
aren't covered by calls to count_node_pages. So linked kernel regions
wasn't reported to add_active_regions. This resulted in free_initmem
causing numerous bad_page reports. This won't occur with this patch
because now all known memory regions are reported by
register_active_ranges.
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Bob Picco <bob.picco@hp.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/vmlinux.lds.S')
0 files changed, 0 insertions, 0 deletions