diff options
| author | Meizu OpenSource <patchwork@meizu.com> | 2016-08-15 10:19:42 +0800 |
|---|---|---|
| committer | Meizu OpenSource <patchwork@meizu.com> | 2016-08-15 10:19:42 +0800 |
| commit | d2e1446d81725c351dc73a03b397ce043fb18452 (patch) | |
| tree | 4dbc616b7f92aea39cd697a9084205ddb805e344 /include/linux/tracepoint_define.h | |
first commit
Diffstat (limited to 'include/linux/tracepoint_define.h')
| -rw-r--r-- | include/linux/tracepoint_define.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/linux/tracepoint_define.h b/include/linux/tracepoint_define.h new file mode 100644 index 000000000..b3cd2c2fc --- /dev/null +++ b/include/linux/tracepoint_define.h @@ -0,0 +1,66 @@ +#ifndef _LINUX_TRACEPOINT_H +#include <linux/tracepoint.h> +#else + +#ifndef _TRACEPOINT_DEFINE +#define _TRACEPOINT_DEFINE + +#ifdef CONFIG_TRACEPOINTS +/* + * Make sure the alignment of the structure in the __tracepoints section will + * not add unwanted padding between the beginning of the section and the + * structure. Force alignment to the same alignment as the section start. + */ +#undef TP_PROTO +#define TP_PROTO(args...) args +#undef TP_ARGS +#define TP_ARGS(args...) args +#undef PARAMS +#define PARAMS(args...) args + +#undef DECLARE_TRACE +#define DECLARE_TRACE(name, proto, args) \ + extern struct tracepoint __tracepoint_##name; \ + static inline void trace_##name(proto) \ + { \ + if (unlikely(__tracepoint_##name.state)) \ + __DO_TRACE(&__tracepoint_##name, \ + TP_PROTO(proto), TP_ARGS(args)); \ + } \ + static inline int register_trace_##name(void (*probe)(proto)) \ + { \ + return tracepoint_probe_register(#name, (void *)probe); \ + } \ + static inline int unregister_trace_##name(void (*probe)(proto)) \ + { \ + return tracepoint_probe_unregister(#name, (void *)probe);\ + } + +#else /* !CONFIG_TRACEPOINTS */ +#undef DECLARE_TRACE +#define DECLARE_TRACE(name, proto, args) \ + static inline void _do_trace_##name(struct tracepoint *tp, proto) \ + { } \ + static inline void trace_##name(proto) \ + { } \ + static inline int register_trace_##name(void (*probe)(proto)) \ + { \ + return -ENOSYS; \ + } \ + static inline int unregister_trace_##name(void (*probe)(proto)) \ + { \ + return -ENOSYS; \ + } +#endif /* CONFIG_TRACEPOINTS */ + +/* Define TRACE_EVENT for Declare tracepoint again*/ + +#undef TRACE_EVENT +#define TRACE_EVENT(name, proto, args, struct, assign, print) \ + DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#undef TRACE_EVENT_FN +#define TRACE_EVENT_FN(name, proto, args, struct, \ + assign, print, reg, unreg) \ + DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#endif /*_TRACEPOINT_DEFINE*/ +#endif /* _LINUX_TRACEPOINT_H */ |