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Benjamin Herrenschmidt e63075a3c9 memblock: Introduce default allocation limit and use it to replace explicit ones 
This introduce memblock.current_limit which is used to limit allocations
from memblock_alloc() or memblock_alloc_base(..., MEMBLOCK_ALLOC_ACCESSIBLE).

The old MEMBLOCK_ALLOC_ANYWHERE changes value from 0 to ~(u64)0 and can still
be used with memblock_alloc_base() to allocate really anywhere.

It is -no-longer- cropped to MEMBLOCK_REAL_LIMIT which disappears.

Note to archs: I'm leaving the default limit to MEMBLOCK_ALLOC_ANYWHERE. I
strongly recommend that you ensure that you set an appropriate limit
during boot in order to guarantee that an memblock_alloc() at any time
results in something that is accessible with a simple __va().

The reason is that a subsequent patch will introduce the ability for
the array to resize itself by reallocating itself. The MEMBLOCK core will
honor the current limit when performing those allocations.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 		2010-08-05 12:56:07 +10:00
..
40x_mmu.c memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
44x_mmu.c powerpc/47x: Base ppc476 support 2010-05-05 09:11:10 -04:00
Makefile powerpc/mm: Split hash MMU specific hugepage code into a new file 2009-10-30 17:20:59 +11:00
dma-noncoherent.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
fault.c powerpc: Invoke oom-killer from page fault 2010-05-06 17:15:58 +10:00
fsl_booke_mmu.c memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
gup.c powerpc/mm: Allow more flexible layouts for hugepage pagetables 2009-10-30 17:20:58 +11:00
hash_low_32.S powerpc: Use names rather than numbers for SPRGs (v2) 2009-08-20 10:12:27 +10:00
hash_low_64.S powerpc/mm: Move around testing of _PAGE_PRESENT in hash code 2010-07-23 08:53:23 +10:00
hash_native_64.c powerpc: Convert native_tlbie_lock to raw_spinlock 2010-02-19 14:52:30 +11:00
hash_utils_64.c memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
highmem.c powerpc/mm: Make k(un)map_atomic out of line 2009-06-26 14:37:25 +10:00
hugetlbpage-hash64.c powerpc/mm: Add some debug output when hash insertion fails 2010-07-23 12:56:56 +10:00
hugetlbpage.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
init_32.c memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
init_64.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
mem.c memblock/powerpc: Use new accessors 2010-08-04 14:39:01 +10:00
mmap_64.c powerpc: Use helpers for rlimits 2010-01-15 13:20:08 +11:00
mmu_context_hash32.c PPC: Split context init/destroy functions 2010-05-17 12:18:20 +03:00
mmu_context_hash64.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mmu_context_nohash.c powerpc/47x: Base ppc476 support 2010-05-05 09:11:10 -04:00
mmu_decl.h powerpc/fsl-booke: Move loadcam_entry back to asm code to fix SMP ftrace 2010-05-17 10:56:20 -05:00
numa.c memblock/powerpc: Use new accessors 2010-08-04 14:39:01 +10:00
pgtable.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pgtable_32.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
pgtable_64.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
ppc_mmu_32.c memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
slb.c powerpc/pseries: Fix to handle slb resize across migration 2009-09-02 16:19:01 +10:00
slb_low.S powerpc/mm: Fix hang accessing top of vmalloc space 2009-10-14 16:58:36 +11:00
slice.c powerpc: is_hugepage_only_range() must account for both 4kB and 64kB slices 2009-01-16 16:15:16 +11:00
stab.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
subpage-prot.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
tlb_hash32.c powerpc/mm: Rework & cleanup page table freeing code path 2009-08-20 10:24:56 +10:00
tlb_hash64.c powerpc: Fix address masking bug in hpte_need_flush() 2010-02-10 13:58:06 +11:00
tlb_low_64e.S fix comment typo leve -> level in powerpc 2010-02-05 12:22:38 +01:00
tlb_nohash.c memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
tlb_nohash_low.S powerpc/fsl-booke: Move loadcam_entry back to asm code to fix SMP ftrace 2010-05-17 10:56:20 -05:00