1 /* SPDX-License-Identifier: GPL-2.0 */
2 #undef TRACE_SYSTEM
3 #define TRACE_SYSTEM vmalloc
4
5 #if !defined(_TRACE_VMALLOC_H) || defined(TRACE_HEADER_MULTI_READ)
6 #define _TRACE_VMALLOC_H
7
8 #include <linux/tracepoint.h>
9
10 /**
11 * alloc_vmap_area - called when a new vmap allocation occurs
12 * @addr: an allocated address
13 * @size: a requested size
14 * @align: a requested alignment
15 * @vstart: a requested start range
16 * @vend: a requested end range
17 * @failed: an allocation failed or not
18 *
19 * This event is used for a debug purpose, it can give an extra
20 * information for a developer about how often it occurs and which
21 * parameters are passed for further validation.
22 */
23 TRACE_EVENT(alloc_vmap_area,
24
25 TP_PROTO(unsigned long addr, unsigned long size, unsigned long align,
26 unsigned long vstart, unsigned long vend, int failed),
27
28 TP_ARGS(addr, size, align, vstart, vend, failed),
29
30 TP_STRUCT__entry(
31 __field(unsigned long, addr)
32 __field(unsigned long, size)
33 __field(unsigned long, align)
34 __field(unsigned long, vstart)
35 __field(unsigned long, vend)
36 __field(int, failed)
37 ),
38
39 TP_fast_assign(
40 __entry->addr = addr;
41 __entry->size = size;
42 __entry->align = align;
43 __entry->vstart = vstart;
44 __entry->vend = vend;
45 __entry->failed = failed;
46 ),
47
48 TP_printk("va_start: %lu size=%lu align=%lu vstart=0x%lx vend=0x%lx failed=%d",
49 __entry->addr, __entry->size, __entry->align,
50 __entry->vstart, __entry->vend, __entry->failed)
51 );
52
53 /**
54 * purge_vmap_area_lazy - called when vmap areas were lazily freed
55 * @start: purging start address
56 * @end: purging end address
57 * @npurged: numbed of purged vmap areas
58 *
59 * This event is used for a debug purpose. It gives some
60 * indication about start:end range and how many objects
61 * are released.
62 */
63 TRACE_EVENT(purge_vmap_area_lazy,
64
65 TP_PROTO(unsigned long start, unsigned long end,
66 unsigned int npurged),
67
68 TP_ARGS(start, end, npurged),
69
70 TP_STRUCT__entry(
71 __field(unsigned long, start)
72 __field(unsigned long, end)
73 __field(unsigned int, npurged)
74 ),
75
76 TP_fast_assign(
77 __entry->start = start;
78 __entry->end = end;
79 __entry->npurged = npurged;
80 ),
81
82 TP_printk("start=0x%lx end=0x%lx num_purged=%u",
83 __entry->start, __entry->end, __entry->npurged)
84 );
85
86 /**
87 * free_vmap_area_noflush - called when a vmap area is freed
88 * @va_start: a start address of VA
89 * @nr_lazy: number of current lazy pages
90 * @nr_lazy_max: number of maximum lazy pages
91 *
92 * This event is used for a debug purpose. It gives some
93 * indication about a VA that is released, number of current
94 * outstanding areas and a maximum allowed threshold before
95 * dropping all of them.
96 */
97 TRACE_EVENT(free_vmap_area_noflush,
98
99 TP_PROTO(unsigned long va_start, unsigned long nr_lazy,
100 unsigned long nr_lazy_max),
101
102 TP_ARGS(va_start, nr_lazy, nr_lazy_max),
103
104 TP_STRUCT__entry(
105 __field(unsigned long, va_start)
106 __field(unsigned long, nr_lazy)
107 __field(unsigned long, nr_lazy_max)
108 ),
109
110 TP_fast_assign(
111 __entry->va_start = va_start;
112 __entry->nr_lazy = nr_lazy;
113 __entry->nr_lazy_max = nr_lazy_max;
114 ),
115
116 TP_printk("va_start=0x%lx nr_lazy=%lu nr_lazy_max=%lu",
117 __entry->va_start, __entry->nr_lazy, __entry->nr_lazy_max)
118 );
119
120 #endif /* _TRACE_VMALLOC_H */
121
122 /* This part must be outside protection */
123 #include <trace/define_trace.h>
124
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