| 1 |
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| 2 | #undef TRACE_SYSTEM
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| 3 | |
| 4 | * For historical versions, memory_failure_event is in ras subsystem,
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| 5 | * some user programs depend on it.
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| 6 |
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| 7 | #define TRACE_SYSTEM ras
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| 8 | #define TRACE_INCLUDE_FILE memory-failure
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| 9 |
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| 10 | #if !defined(_TRACE_MEMORY_FAILURE_H) || defined(TRACE_HEADER_MULTI_READ)
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| 11 | #define _TRACE_MEMORY_FAILURE_H
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| 12 |
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| 13 | #include <linux/tracepoint.h>
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| 14 | #include <linux/mm.h>
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| 15 |
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| 16 | |
| 17 | * memory-failure recovery action result event
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| 18 | *
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| 19 | * unsigned long pfn - Page Frame Number of the corrupted page
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| 20 | * int type - Page types of the corrupted page
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| 21 | * int result - Result of recovery action
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| 22 |
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| 23 |
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| 24 | #define MF_ACTION_RESULT \
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| 25 | EM ( MF_IGNORED, "Ignored" ) \
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| 26 | EM ( MF_FAILED, "Failed" ) \
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| 27 | EM ( MF_DELAYED, "Delayed" ) \
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| 28 | EMe ( MF_RECOVERED, "Recovered" )
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| 29 |
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| 30 | #define MF_PAGE_TYPE \
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| 31 | EM ( MF_MSG_KERNEL, "reserved kernel page" ) \
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| 32 | EM ( MF_MSG_KERNEL_HIGH_ORDER, "high-order kernel page" ) \
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| 33 | EM ( MF_MSG_HUGE, "huge page" ) \
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| 34 | EM ( MF_MSG_FREE_HUGE, "free huge page" ) \
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| 35 | EM ( MF_MSG_GET_HWPOISON, "get hwpoison page" ) \
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| 36 | EM ( MF_MSG_UNMAP_FAILED, "unmapping failed page" ) \
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| 37 | EM ( MF_MSG_DIRTY_SWAPCACHE, "dirty swapcache page" ) \
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| 38 | EM ( MF_MSG_CLEAN_SWAPCACHE, "clean swapcache page" ) \
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| 39 | EM ( MF_MSG_DIRTY_MLOCKED_LRU, "dirty mlocked LRU page" ) \
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| 40 | EM ( MF_MSG_CLEAN_MLOCKED_LRU, "clean mlocked LRU page" ) \
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| 41 | EM ( MF_MSG_DIRTY_UNEVICTABLE_LRU, "dirty unevictable LRU page" ) \
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| 42 | EM ( MF_MSG_CLEAN_UNEVICTABLE_LRU, "clean unevictable LRU page" ) \
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| 43 | EM ( MF_MSG_DIRTY_LRU, "dirty LRU page" ) \
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| 44 | EM ( MF_MSG_CLEAN_LRU, "clean LRU page" ) \
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| 45 | EM ( MF_MSG_TRUNCATED_LRU, "already truncated LRU page" ) \
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| 46 | EM ( MF_MSG_BUDDY, "free buddy page" ) \
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| 47 | EM ( MF_MSG_DAX, "dax page" ) \
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| 48 | EM ( MF_MSG_UNSPLIT_THP, "unsplit thp" ) \
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| 49 | EM ( MF_MSG_ALREADY_POISONED, "already poisoned" ) \
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| 50 | EM ( MF_MSG_PFN_MAP, "non struct page pfn" ) \
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| 51 | EMe ( MF_MSG_UNKNOWN, "unknown page" )
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| 52 |
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| 53 | |
| 54 | * First define the enums in MM_ACTION_RESULT to be exported to userspace
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| 55 | * via TRACE_DEFINE_ENUM().
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| 56 |
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| 57 | #undef EM
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| 58 | #undef EMe
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| 59 | #define EM(a, b) TRACE_DEFINE_ENUM(a);
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| 60 | #define EMe(a, b) TRACE_DEFINE_ENUM(a);
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| 61 |
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| 62 | MF_ACTION_RESULT
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| 63 | MF_PAGE_TYPE
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| 64 |
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| 65 | |
| 66 | * Now redefine the EM() and EMe() macros to map the enums to the strings
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| 67 | * that will be printed in the output.
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| 68 |
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| 69 | #undef EM
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| 70 | #undef EMe
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| 71 | #define EM(a, b) { a, b },
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| 72 | #define EMe(a, b) { a, b }
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| 73 |
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| 74 | TRACE_EVENT(memory_failure_event,
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| 75 | TP_PROTO(unsigned long pfn,
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| 76 | int type,
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| 77 | int result),
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| 78 |
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| 79 | TP_ARGS(pfn, type, result),
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| 80 |
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| 81 | TP_STRUCT__entry(
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| 82 | __field(unsigned long, pfn)
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| 83 | __field(int, type)
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| 84 | __field(int, result)
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| 85 | ),
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| 86 |
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| 87 | TP_fast_assign(
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| 88 | __entry->pfn = pfn;
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| 89 | __entry->type = type;
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| 90 | __entry->result = result;
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| 91 | ),
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| 92 |
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| 93 | TP_printk("pfn %#lx: recovery action for %s: %s",
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| 94 | __entry->pfn,
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| 95 | __print_symbolic(__entry->type, MF_PAGE_TYPE),
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| 96 | __print_symbolic(__entry->result, MF_ACTION_RESULT)
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| 97 | )
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| 98 | );
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| 99 | #endif
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| 100 |
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| 101 |
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| 102 | #include <trace/define_trace.h>
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