Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM memory_failure
4#define TRACE_INCLUDE_FILE memory-failure
5
6#if !defined(_TRACE_MEMORY_FAILURE_H) || defined(TRACE_HEADER_MULTI_READ)
7#define _TRACE_MEMORY_FAILURE_H
8
9#include <linux/tracepoint.h>
10#include <linux/mm.h>
11
12/*
13 * memory-failure recovery action result event
14 *
15 * unsigned long pfn - Page Frame Number of the corrupted page
16 * int type - Page types of the corrupted page
17 * int result - Result of recovery action
18 */
19
20#define MF_ACTION_RESULT \
21 EM ( MF_IGNORED, "Ignored" ) \
22 EM ( MF_FAILED, "Failed" ) \
23 EM ( MF_DELAYED, "Delayed" ) \
24 EMe ( MF_RECOVERED, "Recovered" )
25
26#define MF_PAGE_TYPE \
27 EM ( MF_MSG_KERNEL, "reserved kernel page" ) \
28 EM ( MF_MSG_KERNEL_HIGH_ORDER, "high-order kernel page" ) \
29 EM ( MF_MSG_HUGE, "huge page" ) \
30 EM ( MF_MSG_FREE_HUGE, "free huge page" ) \
31 EM ( MF_MSG_GET_HWPOISON, "get hwpoison page" ) \
32 EM ( MF_MSG_UNMAP_FAILED, "unmapping failed page" ) \
33 EM ( MF_MSG_DIRTY_SWAPCACHE, "dirty swapcache page" ) \
34 EM ( MF_MSG_CLEAN_SWAPCACHE, "clean swapcache page" ) \
35 EM ( MF_MSG_DIRTY_MLOCKED_LRU, "dirty mlocked LRU page" ) \
36 EM ( MF_MSG_CLEAN_MLOCKED_LRU, "clean mlocked LRU page" ) \
37 EM ( MF_MSG_DIRTY_UNEVICTABLE_LRU, "dirty unevictable LRU page" ) \
38 EM ( MF_MSG_CLEAN_UNEVICTABLE_LRU, "clean unevictable LRU page" ) \
39 EM ( MF_MSG_DIRTY_LRU, "dirty LRU page" ) \
40 EM ( MF_MSG_CLEAN_LRU, "clean LRU page" ) \
41 EM ( MF_MSG_TRUNCATED_LRU, "already truncated LRU page" ) \
42 EM ( MF_MSG_BUDDY, "free buddy page" ) \
43 EM ( MF_MSG_DAX, "dax page" ) \
44 EM ( MF_MSG_UNSPLIT_THP, "unsplit thp" ) \
45 EM ( MF_MSG_ALREADY_POISONED, "already poisoned" ) \
46 EM ( MF_MSG_PFN_MAP, "non struct page pfn" ) \
47 EMe ( MF_MSG_UNKNOWN, "unknown page" )
48
49/*
50 * First define the enums in MM_ACTION_RESULT to be exported to userspace
51 * via TRACE_DEFINE_ENUM().
52 */
53#undef EM
54#undef EMe
55#define EM(a, b) TRACE_DEFINE_ENUM(a);
56#define EMe(a, b) TRACE_DEFINE_ENUM(a);
57
58MF_ACTION_RESULT
59MF_PAGE_TYPE
60
61/*
62 * Now redefine the EM() and EMe() macros to map the enums to the strings
63 * that will be printed in the output.
64 */
65#undef EM
66#undef EMe
67#define EM(a, b) { a, b },
68#define EMe(a, b) { a, b }
69
70TRACE_EVENT(memory_failure_event,
71 TP_PROTO(unsigned long pfn,
72 int type,
73 int result),
74
75 TP_ARGS(pfn, type, result),
76
77 TP_STRUCT__entry(
78 __field(unsigned long, pfn)
79 __field(int, type)
80 __field(int, result)
81 ),
82
83 TP_fast_assign(
84 __entry->pfn = pfn;
85 __entry->type = type;
86 __entry->result = result;
87 ),
88
89 TP_printk("pfn %#lx: recovery action for %s: %s",
90 __entry->pfn,
91 __print_symbolic(__entry->type, MF_PAGE_TYPE),
92 __print_symbolic(__entry->result, MF_ACTION_RESULT)
93 )
94);
95#endif /* _TRACE_MEMORY_FAILURE_H */
96
97/* This part must be outside protection */
98#include <trace/define_trace.h>