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Diffstat (limited to 'include/trace/define_trace.h')
| -rw-r--r-- | include/trace/define_trace.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h new file mode 100644 index 000000000..00723935d --- /dev/null +++ b/include/trace/define_trace.h @@ -0,0 +1,135 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Trace files that want to automate creation of all tracepoints defined + * in their file should include this file. The following are macros that the + * trace file may define: + * + * TRACE_SYSTEM defines the system the tracepoint is for + * + * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h + * This macro may be defined to tell define_trace.h what file to include. + * Note, leave off the ".h". + * + * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace + * then this macro can define the path to use. Note, the path is relative to + * define_trace.h, not the file including it. Full path names for out of tree + * modules must be used. + */ + +#ifdef CREATE_TRACE_POINTS + +/* Prevent recursion */ +#undef CREATE_TRACE_POINTS + +#include <linux/stringify.h> + +#undef TRACE_EVENT +#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ + DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) + +#undef TRACE_EVENT_CONDITION +#define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \ + TRACE_EVENT(name, \ + PARAMS(proto), \ + PARAMS(args), \ + PARAMS(tstruct), \ + PARAMS(assign), \ + PARAMS(print)) + +#undef TRACE_EVENT_FN +#define TRACE_EVENT_FN(name, proto, args, tstruct, \ + assign, print, reg, unreg) \ + DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args)) + +#undef TRACE_EVENT_FN_COND +#define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \ + assign, print, reg, unreg) \ + DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args)) + +#undef TRACE_EVENT_NOP +#define TRACE_EVENT_NOP(name, proto, args, struct, assign, print) + +#undef DEFINE_EVENT_NOP +#define DEFINE_EVENT_NOP(template, name, proto, args) + +#undef DEFINE_EVENT +#define DEFINE_EVENT(template, name, proto, args) \ + DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) + +#undef DEFINE_EVENT_FN +#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ + DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args)) + +#undef DEFINE_EVENT_PRINT +#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ + DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) + +#undef DEFINE_EVENT_CONDITION +#define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \ + DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) + +#undef DECLARE_TRACE +#define DECLARE_TRACE(name, proto, args) \ + DEFINE_TRACE(name, PARAMS(proto), PARAMS(args)) + +#undef TRACE_INCLUDE +#undef __TRACE_INCLUDE + +#ifndef TRACE_INCLUDE_FILE +# define TRACE_INCLUDE_FILE TRACE_SYSTEM +# define UNDEF_TRACE_INCLUDE_FILE +#endif + +#ifndef TRACE_INCLUDE_PATH +# define __TRACE_INCLUDE(system) <trace/events/system.h> +# define UNDEF_TRACE_INCLUDE_PATH +#else +# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) +#endif + +# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) + +/* Let the trace headers be reread */ +#define TRACE_HEADER_MULTI_READ + +#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) + +/* Make all open coded DECLARE_TRACE nops */ +#undef DECLARE_TRACE +#define DECLARE_TRACE(name, proto, args) + +#ifdef TRACEPOINTS_ENABLED +#include <trace/trace_events.h> +#include <trace/perf.h> +#include <trace/bpf_probe.h> +#endif + +#undef TRACE_EVENT +#undef TRACE_EVENT_FN +#undef TRACE_EVENT_FN_COND +#undef TRACE_EVENT_CONDITION +#undef TRACE_EVENT_NOP +#undef DEFINE_EVENT_NOP +#undef DECLARE_EVENT_CLASS +#undef DEFINE_EVENT +#undef DEFINE_EVENT_FN +#undef DEFINE_EVENT_PRINT +#undef DEFINE_EVENT_CONDITION +#undef TRACE_HEADER_MULTI_READ +#undef DECLARE_TRACE + +/* Only undef what we defined in this file */ +#ifdef UNDEF_TRACE_INCLUDE_FILE +# undef TRACE_INCLUDE_FILE +# undef UNDEF_TRACE_INCLUDE_FILE +#endif + +#ifdef UNDEF_TRACE_INCLUDE_PATH +# undef TRACE_INCLUDE_PATH +# undef UNDEF_TRACE_INCLUDE_PATH +#endif + +/* We may be processing more files */ +#define CREATE_TRACE_POINTS + +#endif /* CREATE_TRACE_POINTS */ |