diff options
| -rw-r--r-- | include/ras/ras_event.h | 85 | ||||
| -rw-r--r-- | mm/Kconfig | 1 | ||||
| -rw-r--r-- | mm/memory-failure.c | 3 |
3 files changed, 89 insertions, 0 deletions
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h index 79abb9c71772..1443d79e4fe6 100644 --- a/include/ras/ras_event.h +++ b/include/ras/ras_event.h @@ -11,6 +11,7 @@ #include <linux/pci.h> #include <linux/aer.h> #include <linux/cper.h> +#include <linux/mm.h> /* * MCE Extended Error Log trace event @@ -232,6 +233,90 @@ TRACE_EVENT(aer_event, __print_flags(__entry->status, "|", aer_uncorrectable_errors)) ); +/* + * memory-failure recovery action result event + * + * unsigned long pfn - Page Frame Number of the corrupted page + * int type - Page types of the corrupted page + * int result - Result of recovery action + */ + +#ifdef CONFIG_MEMORY_FAILURE +#define MF_ACTION_RESULT \ + EM ( MF_IGNORED, "Ignored" ) \ + EM ( MF_FAILED, "Failed" ) \ + EM ( MF_DELAYED, "Delayed" ) \ + EMe ( MF_RECOVERED, "Recovered" ) + +#define MF_PAGE_TYPE \ + EM ( MF_MSG_KERNEL, "reserved kernel page" ) \ + EM ( MF_MSG_KERNEL_HIGH_ORDER, "high-order kernel page" ) \ + EM ( MF_MSG_SLAB, "kernel slab page" ) \ + EM ( MF_MSG_DIFFERENT_COMPOUND, "different compound page after locking" ) \ + EM ( MF_MSG_POISONED_HUGE, "huge page already hardware poisoned" ) \ + EM ( MF_MSG_HUGE, "huge page" ) \ + EM ( MF_MSG_FREE_HUGE, "free huge page" ) \ + EM ( MF_MSG_UNMAP_FAILED, "unmapping failed page" ) \ + EM ( MF_MSG_DIRTY_SWAPCACHE, "dirty swapcache page" ) \ + EM ( MF_MSG_CLEAN_SWAPCACHE, "clean swapcache page" ) \ + EM ( MF_MSG_DIRTY_MLOCKED_LRU, "dirty mlocked LRU page" ) \ + EM ( MF_MSG_CLEAN_MLOCKED_LRU, "clean mlocked LRU page" ) \ + EM ( MF_MSG_DIRTY_UNEVICTABLE_LRU, "dirty unevictable LRU page" ) \ + EM ( MF_MSG_CLEAN_UNEVICTABLE_LRU, "clean unevictable LRU page" ) \ + EM ( MF_MSG_DIRTY_LRU, "dirty LRU page" ) \ + EM ( MF_MSG_CLEAN_LRU, "clean LRU page" ) \ + EM ( MF_MSG_TRUNCATED_LRU, "already truncated LRU page" ) \ + EM ( MF_MSG_BUDDY, "free buddy page" ) \ + EM ( MF_MSG_BUDDY_2ND, "free buddy page (2nd try)" ) \ + EMe ( MF_MSG_UNKNOWN, "unknown page" ) + +/* + * First define the enums in MM_ACTION_RESULT to be exported to userspace + * via TRACE_DEFINE_ENUM(). + */ +#undef EM +#undef EMe +#define EM(a, b) TRACE_DEFINE_ENUM(a); +#define EMe(a, b) TRACE_DEFINE_ENUM(a); + +MF_ACTION_RESULT +MF_PAGE_TYPE + +/* + * Now redefine the EM() and EMe() macros to map the enums to the strings + * that will be printed in the output. + */ +#undef EM +#undef EMe +#define EM(a, b) { a, b }, +#define EMe(a, b) { a, b } + +TRACE_EVENT(memory_failure_event, + TP_PROTO(unsigned long pfn, + int type, + int result), + + TP_ARGS(pfn, type, result), + + TP_STRUCT__entry( + __field(unsigned long, pfn) + __field(int, type) + __field(int, result) + ), + + TP_fast_assign( + __entry->pfn = pfn; + __entry->type = type; + __entry->result = result; + ), + + TP_printk("pfn %#lx: recovery action for %s: %s", + __entry->pfn, + __print_symbolic(__entry->type, MF_PAGE_TYPE), + __print_symbolic(__entry->result, MF_ACTION_RESULT) + ) +); +#endif /* CONFIG_MEMORY_FAILURE */ #endif /* _TRACE_HW_EVENT_MC_H */ /* This part must be outside protection */ diff --git a/mm/Kconfig b/mm/Kconfig index 390214da4546..c180af880ed5 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -368,6 +368,7 @@ config MEMORY_FAILURE depends on ARCH_SUPPORTS_MEMORY_FAILURE bool "Enable recovery from hardware memory errors" select MEMORY_ISOLATION + select RAS help Enables code to recover from some memory failures on systems with MCA recovery. This allows a system to continue running diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 15c0d5ab0893..c53543d89282 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -57,6 +57,7 @@ #include <linux/mm_inline.h> #include <linux/kfifo.h> #include "internal.h" +#include "ras/ras_event.h" int sysctl_memory_failure_early_kill __read_mostly = 0; @@ -855,6 +856,8 @@ static struct page_state { static void action_result(unsigned long pfn, enum mf_action_page_type type, enum mf_result result) { + trace_memory_failure_event(pfn, type, result); + pr_err("MCE %#lx: recovery action for %s: %s\n", pfn, action_page_types[type], action_name[result]); } |