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author | Laura Abbott <labbott@redhat.com> | 2015-06-25 01:04:20 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-06-29 11:15:57 +0100 |
commit | 3de1f52a3ae823265299409e276f56cdadddc310 (patch) | |
tree | f4e0639e9683e5a1e12146df25d915954107f049 /arch/arm/mm/mmu.c | |
parent | 398f74569cebbf06bc6b069442bcd0e9616ca465 (diff) | |
download | linux-3de1f52a3ae823265299409e276f56cdadddc310.tar.gz linux-3de1f52a3ae823265299409e276f56cdadddc310.tar.bz2 linux-3de1f52a3ae823265299409e276f56cdadddc310.zip |
ARM: 8394/1: update memblock limit after mapping lowmem
The memblock limit is currently used in find_limits
to find the bounds for ZONE_NORMAL. The memblock
limit may need to be rounded down a PMD size to ensure
allocations are fully mapped though. This has the side
effect of reducing the amount of memory in ZONE_NORMAL.
Once all lowmem is mapped, it's safe to change the memblock
limit back to include the unaligned section. Adjust the
memblock limit after lowmem mapping is complete.
Before:
# cat /proc/zoneinfo | grep managed
managed 62907
managed 424
After:
# cat /proc/zoneinfo | grep managed
managed 63331
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/mmu.c')
-rw-r--r-- | arch/arm/mm/mmu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 7186382672b5..904d1532e6d0 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1519,6 +1519,7 @@ void __init paging_init(const struct machine_desc *mdesc) build_mem_type_table(); prepare_page_table(); map_lowmem(); + memblock_set_current_limit(arm_lowmem_limit); dma_contiguous_remap(); devicemaps_init(mdesc); kmap_init(); |