aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/Kconfig.debug
diff options
context:
space:
mode:
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-04-12 15:30:23 +1000
committerPaul Mackerras <paulus@samba.org>2007-04-13 04:09:39 +1000
commit370a908db154f51008cea41e67e7409efa251c7b (patch)
treece41155e4b4ae2702a6410b28edd653c83858feb /arch/powerpc/Kconfig.debug
parent88df6e90fa9782dbf44d936e44649afe271e4790 (diff)
downloadlinaro-lsk-370a908db154f51008cea41e67e7409efa251c7b.tar.gz
[POWERPC] DEBUG_PAGEALLOC for 64-bit
Here's an implementation of DEBUG_PAGEALLOC for 64 bits powerpc. It applies on top of the 32 bits patch. Unlike Anton's previous attempt, I'm not using updatepp. I'm removing the hash entries from the bolted mapping (using a map in RAM of all the slots). Expensive but it doesn't really matter, does it ? :-) Memory hot-added doesn't benefit from this unless it's added at an address that is below end_of_DRAM() as calculated at boot time. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> arch/powerpc/Kconfig.debug | 2 arch/powerpc/mm/hash_utils_64.c | 84 ++++++++++++++++++++++++++++++++++++++-- 2 files changed, 82 insertions(+), 4 deletions(-) Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/Kconfig.debug')
-rw-r--r--arch/powerpc/Kconfig.debug2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 0f8bb86995b..86aa3745af7 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -20,7 +20,7 @@ config DEBUG_STACK_USAGE
config DEBUG_PAGEALLOC
bool "Debug page memory allocations"
- depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND && PPC32
+ depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND
help
Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types