aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/include/asm/trace/mpx.h
blob: 0f492fc50bcec34368a1869995496b64a476cd39 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
#undef TRACE_SYSTEM
#define TRACE_SYSTEM mpx

#if !defined(_TRACE_MPX_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_MPX_H

#include <linux/tracepoint.h>

#ifdef CONFIG_X86_INTEL_MPX

TRACE_EVENT(mpx_bounds_register_exception,

	TP_PROTO(void *addr_referenced,
		 const struct mpx_bndreg *bndreg),
	TP_ARGS(addr_referenced, bndreg),

	TP_STRUCT__entry(
		__field(void *, addr_referenced)
		__field(u64, lower_bound)
		__field(u64, upper_bound)
	),

	TP_fast_assign(
		__entry->addr_referenced = addr_referenced;
		__entry->lower_bound = bndreg->lower_bound;
		__entry->upper_bound = bndreg->upper_bound;
	),
	/*
	 * Note that we are printing out the '~' of the upper
	 * bounds register here.  It is actually stored in its
	 * one's complement form so that its 'init' state
	 * corresponds to all 0's.  But, that looks like
	 * gibberish when printed out, so print out the 1's
	 * complement instead of the actual value here.  Note
	 * though that you still need to specify filters for the
	 * actual value, not the displayed one.
	 */
	TP_printk("address referenced: 0x%p bounds: lower: 0x%llx ~upper: 0x%llx",
		__entry->addr_referenced,
		__entry->lower_bound,
		~__entry->upper_bound
	)
);

TRACE_EVENT(bounds_exception_mpx,

	TP_PROTO(const struct mpx_bndcsr *bndcsr),
	TP_ARGS(bndcsr),

	TP_STRUCT__entry(
		__field(u64, bndcfgu)
		__field(u64, bndstatus)
	),

	TP_fast_assign(
		/* need to get rid of the 'const' on bndcsr */
		__entry->bndcfgu   = (u64)bndcsr->bndcfgu;
		__entry->bndstatus = (u64)bndcsr->bndstatus;
	),

	TP_printk("bndcfgu:0x%llx bndstatus:0x%llx",
		__entry->bndcfgu,
		__entry->bndstatus)
);

DECLARE_EVENT_CLASS(mpx_range_trace,

	TP_PROTO(unsigned long start,
		 unsigned long end),
	TP_ARGS(start, end),

	TP_STRUCT__entry(
		__field(unsigned long, start)
		__field(unsigned long, end)
	),

	TP_fast_assign(
		__entry->start = start;
		__entry->end   = end;
	),

	TP_printk("[0x%p:0x%p]",
		(void *)__entry->start,
		(void *)__entry->end
	)
);

DEFINE_EVENT(mpx_range_trace, mpx_unmap_zap,
	TP_PROTO(unsigned long start, unsigned long end),
	TP_ARGS(start, end)
);

DEFINE_EVENT(mpx_range_trace, mpx_unmap_search,
	TP_PROTO(unsigned long start, unsigned long end),
	TP_ARGS(start, end)
);

TRACE_EVENT(mpx_new_bounds_table,

	TP_PROTO(unsigned long table_vaddr),
	TP_ARGS(table_vaddr),

	TP_STRUCT__entry(
		__field(unsigned long, table_vaddr)
	),

	TP_fast_assign(
		__entry->table_vaddr = table_vaddr;
	),

	TP_printk("table vaddr:%p", (void *)__entry->table_vaddr)
);

#else

/*
 * This gets used outside of MPX-specific code, so we need a stub.
 */
static inline
void trace_bounds_exception_mpx(const struct mpx_bndcsr *bndcsr)
{
}

#endif /* CONFIG_X86_INTEL_MPX */

#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH asm/trace/
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE mpx
#endif /* _TRACE_MPX_H */

/* This part must be outside protection */
#include <trace/define_trace.h>