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d0254c7c MD |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; only version 2 | |
8 | * of the License. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | */ | |
19 | ||
20 | #define _GNU_SOURCE | |
21 | #include <popt.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <sys/stat.h> | |
26 | #include <sys/types.h> | |
27 | #include <unistd.h> | |
28 | #include <inttypes.h> | |
29 | #include <ctype.h> | |
30 | ||
31 | #include "../cmd.h" | |
32 | #include "../conf.h" | |
33 | #include "../utils.h" | |
34 | ||
35 | static int opt_event_type; | |
36 | static char *opt_kernel; | |
37 | static char *opt_cmd_name; | |
38 | static int opt_pid_all; | |
39 | static int opt_userspace; | |
40 | static pid_t opt_pid; | |
41 | ||
42 | enum { | |
43 | OPT_HELP = 1, | |
44 | OPT_USERSPACE, | |
45 | OPT_TRACEPOINT, | |
46 | OPT_MARKER, | |
47 | OPT_PROBE, | |
48 | OPT_FUNCTION, | |
49 | OPT_FUNCTION_ENTRY, | |
50 | }; | |
51 | ||
52 | static struct poptOption long_options[] = { | |
53 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
54 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
55 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
56 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, 0, OPT_USERSPACE, 0, 0}, | |
57 | {"all", 0, POPT_ARG_VAL, &opt_pid_all, 1, 0, 0}, | |
58 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, | |
59 | {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, | |
60 | {"marker", 0, POPT_ARG_NONE, 0, OPT_MARKER, 0, 0}, | |
61 | {"probe", 0, POPT_ARG_NONE, 0, OPT_PROBE, 0, 0}, | |
62 | {"function", 0, POPT_ARG_NONE, 0, OPT_FUNCTION, 0, 0}, | |
63 | {"function:entry", 0, POPT_ARG_NONE, 0, OPT_FUNCTION_ENTRY, 0, 0}, | |
64 | {0, 0, 0, 0, 0, 0, 0} | |
65 | }; | |
66 | ||
67 | /* | |
68 | * usage | |
69 | */ | |
70 | static void usage(FILE *ofp) | |
71 | { | |
72 | fprintf(ofp, "usage: lttng calibrate [options] [calibrate_options]\n"); | |
73 | fprintf(ofp, "\n"); | |
74 | fprintf(ofp, " -h, --help Show this help\n"); | |
75 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); | |
76 | fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n"); | |
77 | fprintf(ofp, " --all If -u, apply on all traceable apps\n"); | |
78 | fprintf(ofp, " -p, --pid PID If -u, apply on a specific PID\n"); | |
79 | fprintf(ofp, "\n"); | |
80 | fprintf(ofp, "Calibrate options:\n"); | |
81 | fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); | |
82 | fprintf(ofp, " --probe\n"); | |
83 | fprintf(ofp, " Dynamic probe.\n"); | |
84 | fprintf(ofp, " --function\n"); | |
85 | fprintf(ofp, " Dynamic function entry/return probe.\n"); | |
86 | fprintf(ofp, " --function:entry symbol\n"); | |
87 | fprintf(ofp, " Function tracer event\n"); | |
88 | fprintf(ofp, " --marker User-space marker (deprecated)\n"); | |
89 | fprintf(ofp, "\n"); | |
90 | } | |
91 | ||
92 | /* | |
93 | * calibrate_lttng | |
94 | * | |
95 | * Calibrate LTTng. | |
96 | */ | |
97 | static int calibrate_lttng(void) | |
98 | { | |
99 | int ret = CMD_SUCCESS; | |
100 | struct lttng_domain dom; | |
101 | struct lttng_calibrate calibrate; | |
102 | ||
103 | /* Create lttng domain */ | |
104 | if (opt_kernel) { | |
105 | dom.type = LTTNG_DOMAIN_KERNEL; | |
106 | } | |
107 | ||
108 | /* Kernel tracer action */ | |
109 | if (opt_kernel) { | |
110 | switch (opt_event_type) { | |
111 | case LTTNG_EVENT_TRACEPOINT: | |
112 | DBG("Calibrating kernel tracepoints"); | |
113 | break; | |
114 | case LTTNG_EVENT_PROBE: | |
115 | DBG("Calibrating kernel probes"); | |
116 | break; | |
117 | case LTTNG_EVENT_FUNCTION: | |
118 | DBG("Calibrating kernel functions"); | |
119 | calibrate.type = LTTNG_CALIBRATE_FUNCTION; | |
120 | ret = lttng_calibrate(&dom, &calibrate); | |
121 | break; | |
122 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
123 | DBG("Calibrating kernel function entry"); | |
124 | break; | |
125 | default: | |
126 | ret = CMD_NOT_IMPLEMENTED; | |
127 | goto end; | |
128 | } | |
129 | } else if (opt_userspace) { /* User-space tracer action */ | |
130 | /* | |
131 | * TODO: Waiting on lttng UST 2.0 | |
132 | */ | |
133 | if (opt_pid_all) { | |
134 | } else if (opt_pid != 0) { | |
135 | } | |
136 | ret = CMD_NOT_IMPLEMENTED; | |
137 | goto end; | |
138 | } else { | |
139 | ERR("Please specify a tracer (kernel or user-space)"); | |
140 | goto end; | |
141 | } | |
142 | end: | |
143 | return ret; | |
144 | } | |
145 | ||
146 | /* | |
147 | * cmd_calibrate | |
148 | * | |
149 | * Calibrate LTTng tracer. | |
150 | */ | |
151 | int cmd_calibrate(int argc, const char **argv) | |
152 | { | |
153 | int opt, ret; | |
154 | static poptContext pc; | |
155 | ||
156 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
157 | poptReadDefaultConfig(pc, 0); | |
158 | ||
159 | /* Default event type */ | |
160 | opt_event_type = LTTNG_EVENT_TRACEPOINT; | |
161 | ||
162 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
163 | switch (opt) { | |
164 | case OPT_HELP: | |
165 | usage(stderr); | |
166 | ret = CMD_SUCCESS; | |
167 | goto end; | |
168 | case OPT_USERSPACE: | |
169 | opt_userspace = 1; | |
170 | opt_cmd_name = poptGetOptArg(pc); | |
171 | break; | |
172 | case OPT_TRACEPOINT: | |
173 | ret = CMD_NOT_IMPLEMENTED; | |
174 | break; | |
175 | case OPT_MARKER: | |
176 | ret = CMD_NOT_IMPLEMENTED; | |
177 | goto end; | |
178 | case OPT_PROBE: | |
179 | ret = CMD_NOT_IMPLEMENTED; | |
180 | break; | |
181 | case OPT_FUNCTION: | |
182 | opt_event_type = LTTNG_EVENT_FUNCTION; | |
183 | break; | |
184 | case OPT_FUNCTION_ENTRY: | |
185 | ret = CMD_NOT_IMPLEMENTED; | |
186 | break; | |
187 | default: | |
188 | usage(stderr); | |
189 | ret = CMD_UNDEFINED; | |
190 | goto end; | |
191 | } | |
192 | } | |
193 | ||
194 | ret = calibrate_lttng(); | |
195 | ||
196 | end: | |
197 | return ret; | |
198 | } |