summaryrefslogtreecommitdiff
path: root/mm/Kconfig
diff options
context:
space:
mode:
authorWu Fengguang <fengguang.wu@intel.com>2009-12-16 12:19:59 +0100
committerAndi Kleen <ak@linux.intel.com>2009-12-16 12:19:59 +0100
commit478c5ffc0b50527bd2390f2daa46cc16276b8413 (patch)
treef58f5be9760fd0e81567611cf6e9f9bc77d1d3cd /mm/Kconfig
parent1a9b5b7fe0c5dad8a635288882d36785dea742f9 (diff)
downloadconfigs-478c5ffc0b50527bd2390f2daa46cc16276b8413.tar.gz
HWPOISON: add page flags filter
When specified, only poison pages if ((page_flags & mask) == value). - corrupt-filter-flags-mask - corrupt-filter-flags-value This allows stress testing of many kinds of pages. Strictly speaking, the buddy pages requires taking zone lock, to avoid setting PG_hwpoison on a "was buddy but now allocated to someone" page. However we can just do nothing because we set PG_locked in the beginning, this prevents the page allocator from allocating it to someone. (It will BUG() on the unexpected PG_locked, which is fine for hwpoison testing.) [AK: Add select PROC_PAGE_MONITOR to satisfy dependency] CC: Nick Piggin <npiggin@suse.de> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 2310984591e..8cea7fde06e 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -253,6 +253,7 @@ config MEMORY_FAILURE
config HWPOISON_INJECT
tristate "Poison pages injector"
depends on MEMORY_FAILURE && DEBUG_KERNEL
+ select PROC_PAGE_MONITOR
config NOMMU_INITIAL_TRIM_EXCESS
int "Turn on mmap() excess space trimming before booting"