projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 770cb243 SR |
1 | /* |
| 2 | * trace_export.c - export basic ftrace utilities to user space | |
| 3 | * | |
| 4 | * Copyright (C) 2009 Steven Rostedt <srostedt@redhat.com> | |
| 5 | */ | |
| 6 | #include <linux/stringify.h> | |
| 7 | #include <linux/kallsyms.h> | |
| 8 | #include <linux/seq_file.h> | |
| 9 | #include <linux/debugfs.h> | |
| 10 | #include <linux/uaccess.h> | |
| 11 | #include <linux/ftrace.h> | |
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/fs.h> | |
| 15 | ||
| 16 | #include "trace_output.h" | |
| 17 | ||
| 18 | #include "trace_format.h" | |
| 19 | ||
| 20 | #undef TRACE_FIELD_ZERO_CHAR | |
| 21 | #define TRACE_FIELD_ZERO_CHAR(item) \ | |
| 22 | ret = trace_seq_printf(s, "\tfield: char " #item ";\t" \ | |
| 23 | "offset:%lu;\tsize:0;\n", \ | |
| 24 | offsetof(typeof(field), item)); \ | |
| 25 | if (!ret) \ | |
| 26 | return 0; | |
| 27 | ||
| 28 | ||
| 29 | #undef TPRAWFMT | |
| 30 | #define TPRAWFMT(args...) args | |
| 31 | ||
| 32 | #undef TRACE_EVENT_FORMAT | |
| 33 | #define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \ | |
| 34 | static int \ | |
| 35 | ftrace_format_##call(struct trace_seq *s) \ | |
| 36 | { \ | |
| 37 | struct args field; \ | |
| 38 | int ret; \ | |
| 39 | \ | |
| 40 | tstruct; \ | |
| 41 | \ | |
| 42 | trace_seq_printf(s, "\nprint fmt: \"%s\"\n", tpfmt); \ | |
| 43 | \ | |
| 44 | return ret; \ | |
| 45 | } | |
| 46 | ||
| 47 | #include "trace_event_types.h" | |
| 48 | ||
| 49 | #undef TRACE_ZERO_CHAR | |
| 50 | #define TRACE_ZERO_CHAR(arg) | |
| 51 | ||
| 52 | #undef TRACE_FIELD | |
| 53 | #define TRACE_FIELD(type, item, assign)\ | |
| 54 | entry->item = assign; | |
| 55 | ||
| 56 | #undef TRACE_FIELD | |
| 57 | #define TRACE_FIELD(type, item, assign)\ | |
| 58 | entry->item = assign; | |
| 59 | ||
| 60 | #undef TPCMD | |
| 61 | #define TPCMD(cmd...) cmd | |
| 62 | ||
| 63 | #undef TRACE_ENTRY | |
| 64 | #define TRACE_ENTRY entry | |
| 65 | ||
| 66 | #undef TRACE_FIELD_SPECIAL | |
| 67 | #define TRACE_FIELD_SPECIAL(type_item, item, cmd) \ | |
| 68 | cmd; | |
| 69 | ||
| 70 | #undef TRACE_EVENT_FORMAT | |
| 71 | #define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \ | |
| 72 | \ | |
| 73 | static struct ftrace_event_call __used \ | |
| 74 | __attribute__((__aligned__(4))) \ | |
| 75 | __attribute__((section("_ftrace_events"))) event_##call = { \ | |
| 76 | .name = #call, \ | |
| 77 | .id = proto, \ | |
| 78 | .system = __stringify(TRACE_SYSTEM), \ | |
| 79 | .show_format = ftrace_format_##call, \ | |
| 80 | } | |
| 81 | #include "trace_event_types.h" |