Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl...
[sfrench/cifs-2.6.git] / include / trace / perf.h
1
2 #undef TRACE_SYSTEM_VAR
3
4 #ifdef CONFIG_PERF_EVENTS
5
6 #undef __entry
7 #define __entry entry
8
9 #undef __get_dynamic_array
10 #define __get_dynamic_array(field)      \
11                 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
12
13 #undef __get_dynamic_array_len
14 #define __get_dynamic_array_len(field)  \
15                 ((__entry->__data_loc_##field >> 16) & 0xffff)
16
17 #undef __get_str
18 #define __get_str(field) ((char *)__get_dynamic_array(field))
19
20 #undef __get_bitmask
21 #define __get_bitmask(field) (char *)__get_dynamic_array(field)
22
23 #undef __perf_count
24 #define __perf_count(c) (__count = (c))
25
26 #undef __perf_task
27 #define __perf_task(t)  (__task = (t))
28
29 #undef DECLARE_EVENT_CLASS
30 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)  \
31 static notrace void                                                     \
32 perf_trace_##call(void *__data, proto)                                  \
33 {                                                                       \
34         struct trace_event_call *event_call = __data;                   \
35         struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
36         struct trace_event_raw_##call *entry;                           \
37         struct bpf_prog *prog = event_call->prog;                       \
38         struct pt_regs *__regs;                                         \
39         u64 __count = 1;                                                \
40         struct task_struct *__task = NULL;                              \
41         struct hlist_head *head;                                        \
42         int __entry_size;                                               \
43         int __data_size;                                                \
44         int rctx;                                                       \
45                                                                         \
46         __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
47                                                                         \
48         head = this_cpu_ptr(event_call->perf_events);                   \
49         if (!prog && __builtin_constant_p(!__task) && !__task &&        \
50                                 hlist_empty(head))                      \
51                 return;                                                 \
52                                                                         \
53         __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
54                              sizeof(u64));                              \
55         __entry_size -= sizeof(u32);                                    \
56                                                                         \
57         entry = perf_trace_buf_alloc(__entry_size, &__regs, &rctx);     \
58         if (!entry)                                                     \
59                 return;                                                 \
60                                                                         \
61         perf_fetch_caller_regs(__regs);                                 \
62                                                                         \
63         tstruct                                                         \
64                                                                         \
65         { assign; }                                                     \
66                                                                         \
67         perf_trace_run_bpf_submit(entry, __entry_size, rctx,            \
68                                   event_call, __count, __regs,          \
69                                   head, __task);                        \
70 }
71
72 /*
73  * This part is compiled out, it is only here as a build time check
74  * to make sure that if the tracepoint handling changes, the
75  * perf probe will fail to compile unless it too is updated.
76  */
77 #undef DEFINE_EVENT
78 #define DEFINE_EVENT(template, call, proto, args)                       \
79 static inline void perf_test_probe_##call(void)                         \
80 {                                                                       \
81         check_trace_callback_type_##call(perf_trace_##template);        \
82 }
83
84
85 #undef DEFINE_EVENT_PRINT
86 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)  \
87         DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
88
89 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
90 #endif /* CONFIG_PERF_EVENTS */