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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-06 15:39:01 -0700
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-08-05 12:56:07 +1000
commite63075a3c9377536d085bc013cd3fe6323162449 (patch)
tree28fde124dde6df867947882fc686d228502846df /arch/sh
parent27f574c223d2c09610058b3ec7a29582d63a3e06 (diff)
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>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/include/asm/memblock.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/sh/include/asm/memblock.h b/arch/sh/include/asm/memblock.h
index dfe683b88075..e87063fad2ea 100644
--- a/arch/sh/include/asm/memblock.h
+++ b/arch/sh/include/asm/memblock.h
@@ -1,6 +1,4 @@
#ifndef __ASM_SH_MEMBLOCK_H
#define __ASM_SH_MEMBLOCK_H
-#define MEMBLOCK_REAL_LIMIT 0
-
#endif /* __ASM_SH_MEMBLOCK_H */