diff options
| author | Andi Kleen <andi@firstfloor.org> | 2009-12-21 19:56:42 +0100 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2009-12-21 19:56:42 +0100 |
| commit | 27df5068e24f2f88de98e95eb6e8dbc9800bf80e (patch) | |
| tree | a93ae4838cc5a1b6c866005bd79777895d0ba7de /mm | |
| parent | dd59f6c76b265ed2ff18b497d6105a9511b1feb1 (diff) | |
| download | lwn-27df5068e24f2f88de98e95eb6e8dbc9800bf80e.tar.gz lwn-27df5068e24f2f88de98e95eb6e8dbc9800bf80e.zip | |
HWPOISON: Add PROC_FS dependency to hwpoison injector v2
The injector filter requires stable_page_flags() which is supplied
by procfs. So make it dependent on that.
Also add ifdefs around the filter code in memory-failure.c so that
when the filter is disabled due to missing dependencies the whole
code still builds.
Reported-by: Ingo Molnar
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Kconfig | 2 | ||||
| -rw-r--r-- | mm/memory-failure.c | 9 |
2 files changed, 10 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index ee9f3e0f2b69..17b8947aa7da 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -253,7 +253,7 @@ config MEMORY_FAILURE config HWPOISON_INJECT tristate "HWPoison pages injector" - depends on MEMORY_FAILURE && DEBUG_KERNEL + depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS select PROC_PAGE_MONITOR config NOMMU_INITIAL_TRIM_EXCESS diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 6a0466ed5bfd..17299fd4577c 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -52,6 +52,8 @@ int sysctl_memory_failure_recovery __read_mostly = 1; atomic_long_t mce_bad_pages __read_mostly = ATOMIC_LONG_INIT(0); +#if defined(CONFIG_HWPOISON_INJECT) || defined(CONFIG_HWPOISON_INJECT_MODULE) + u32 hwpoison_filter_enable = 0; u32 hwpoison_filter_dev_major = ~0U; u32 hwpoison_filter_dev_minor = ~0U; @@ -164,6 +166,13 @@ int hwpoison_filter(struct page *p) return 0; } +#else +int hwpoison_filter(struct page *p) +{ + return 0; +} +#endif + EXPORT_SYMBOL_GPL(hwpoison_filter); /* |