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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-04-12 09:30:22 +0400
committerPaul Mackerras <paulus@samba.org>2007-04-12 22:09:39 +0400
commit88df6e90fa9782dbf44d936e44649afe271e4790 (patch)
treed0f4c46731e35e96a381dd3e3138f0276741ca57 /arch/powerpc/mm/ppc_mmu_32.c
parentee4f2ea48674b6c9d91bc854edc51a3e6a7168c4 (diff)
downloadlinux-88df6e90fa9782dbf44d936e44649afe271e4790.tar.xz
[POWERPC] DEBUG_PAGEALLOC for 32-bit
Here's an implementation of DEBUG_PAGEALLOC for ppc32. It disables BAT mapping and is only tested with Hash table based processor though it shouldn't be too hard to adapt it to others. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> arch/powerpc/Kconfig.debug | 9 ++++++ arch/powerpc/mm/init_32.c | 4 +++ arch/powerpc/mm/pgtable_32.c | 52 +++++++++++++++++++++++++++++++++++++++ arch/powerpc/mm/ppc_mmu_32.c | 4 ++- include/asm-powerpc/cacheflush.h | 6 ++++ 5 files changed, 74 insertions(+), 1 deletion(-) Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/mm/ppc_mmu_32.c')
-rw-r--r--arch/powerpc/mm/ppc_mmu_32.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 7cceb2c44cb9..05066674a7a0 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -85,8 +85,10 @@ unsigned long __init mmu_mapin_ram(void)
unsigned long max_size = (256<<20);
unsigned long align;
- if (__map_without_bats)
+ if (__map_without_bats) {
+ printk(KERN_DEBUG "RAM mapped without BATs\n");
return 0;
+ }
/* Set up BAT2 and if necessary BAT3 to cover RAM. */