1 // SPDX-License-Identifier: GPL-2.0
2 #include <inttypes.h>
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <stdbool.h>
6 #include <linux/kernel.h>
7 #include <linux/types.h>
8 #include <linux/perf_event.h>
9 #include "util/evsel_fprintf.h"
10 #include "util/pmu.h"
11 #include "util/pmus.h"
12 #include "trace-event.h"
13
14 struct bit_names {
15 int bit;
16 const char *name;
17 };
18
__p_bits(char * buf,size_t size,u64 value,struct bit_names * bits)19 static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits)
20 {
21 bool first_bit = true;
22 int i = 0;
23
24 do {
25 if (value & bits[i].bit) {
26 buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name);
27 first_bit = false;
28 }
29 } while (bits[++i].name != NULL);
30 }
31
__p_sample_type(char * buf,size_t size,u64 value)32 static void __p_sample_type(char *buf, size_t size, u64 value)
33 {
34 #define bit_name(n) { PERF_SAMPLE_##n, #n }
35 struct bit_names bits[] = {
36 bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
37 bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
38 bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
39 bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
40 bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC),
41 bit_name(WEIGHT), bit_name(PHYS_ADDR), bit_name(AUX),
42 bit_name(CGROUP), bit_name(DATA_PAGE_SIZE), bit_name(CODE_PAGE_SIZE),
43 bit_name(WEIGHT_STRUCT),
44 { .name = NULL, }
45 };
46 #undef bit_name
47 __p_bits(buf, size, value, bits);
48 }
49
__p_branch_sample_type(char * buf,size_t size,u64 value)50 static void __p_branch_sample_type(char *buf, size_t size, u64 value)
51 {
52 #define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n }
53 struct bit_names bits[] = {
54 bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY),
55 bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL),
56 bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX),
57 bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP),
58 bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES),
59 bit_name(TYPE_SAVE), bit_name(HW_INDEX), bit_name(PRIV_SAVE),
60 { .name = NULL, }
61 };
62 #undef bit_name
63 __p_bits(buf, size, value, bits);
64 }
65
__p_read_format(char * buf,size_t size,u64 value)66 static void __p_read_format(char *buf, size_t size, u64 value)
67 {
68 #define bit_name(n) { PERF_FORMAT_##n, #n }
69 struct bit_names bits[] = {
70 bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
71 bit_name(ID), bit_name(GROUP), bit_name(LOST),
72 { .name = NULL, }
73 };
74 #undef bit_name
75 __p_bits(buf, size, value, bits);
76 }
77
78 #define ENUM_ID_TO_STR_CASE(x) case x: return (#x);
stringify_perf_type_id(struct perf_pmu * pmu,u32 type)79 static const char *stringify_perf_type_id(struct perf_pmu *pmu, u32 type)
80 {
81 if (pmu)
82 return pmu->name;
83
84 switch (type) {
85 ENUM_ID_TO_STR_CASE(PERF_TYPE_HARDWARE)
86 ENUM_ID_TO_STR_CASE(PERF_TYPE_SOFTWARE)
87 ENUM_ID_TO_STR_CASE(PERF_TYPE_TRACEPOINT)
88 ENUM_ID_TO_STR_CASE(PERF_TYPE_HW_CACHE)
89 ENUM_ID_TO_STR_CASE(PERF_TYPE_RAW)
90 ENUM_ID_TO_STR_CASE(PERF_TYPE_BREAKPOINT)
91 default:
92 return NULL;
93 }
94 }
95
stringify_perf_hw_id(u64 value)96 static const char *stringify_perf_hw_id(u64 value)
97 {
98 switch (value) {
99 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CPU_CYCLES)
100 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_INSTRUCTIONS)
101 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_REFERENCES)
102 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_MISSES)
103 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_INSTRUCTIONS)
104 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_MISSES)
105 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BUS_CYCLES)
106 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_FRONTEND)
107 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_BACKEND)
108 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_REF_CPU_CYCLES)
109 default:
110 return NULL;
111 }
112 }
113
stringify_perf_hw_cache_id(u64 value)114 static const char *stringify_perf_hw_cache_id(u64 value)
115 {
116 switch (value) {
117 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1D)
118 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1I)
119 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_LL)
120 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_DTLB)
121 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_ITLB)
122 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_BPU)
123 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_NODE)
124 default:
125 return NULL;
126 }
127 }
128
stringify_perf_hw_cache_op_id(u64 value)129 static const char *stringify_perf_hw_cache_op_id(u64 value)
130 {
131 switch (value) {
132 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_READ)
133 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_WRITE)
134 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_PREFETCH)
135 default:
136 return NULL;
137 }
138 }
139
stringify_perf_hw_cache_op_result_id(u64 value)140 static const char *stringify_perf_hw_cache_op_result_id(u64 value)
141 {
142 switch (value) {
143 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_ACCESS)
144 ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_MISS)
145 default:
146 return NULL;
147 }
148 }
149
stringify_perf_sw_id(u64 value)150 static const char *stringify_perf_sw_id(u64 value)
151 {
152 switch (value) {
153 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_CLOCK)
154 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_TASK_CLOCK)
155 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS)
156 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CONTEXT_SWITCHES)
157 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_MIGRATIONS)
158 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MIN)
159 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MAJ)
160 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_ALIGNMENT_FAULTS)
161 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_EMULATION_FAULTS)
162 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_DUMMY)
163 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_BPF_OUTPUT)
164 ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CGROUP_SWITCHES)
165 default:
166 return NULL;
167 }
168 }
169 #undef ENUM_ID_TO_STR_CASE
170
171 #define PRINT_ID(_s, _f) \
172 do { \
173 const char *__s = _s; \
174 if (__s == NULL) \
175 snprintf(buf, size, _f, value); \
176 else \
177 snprintf(buf, size, _f" (%s)", value, __s); \
178 } while (0)
179 #define print_id_unsigned(_s) PRINT_ID(_s, "%"PRIu64)
180 #define print_id_hex(_s) PRINT_ID(_s, "%#"PRIx64)
181
__p_type_id(struct perf_pmu * pmu,char * buf,size_t size,u64 value)182 static void __p_type_id(struct perf_pmu *pmu, char *buf, size_t size, u64 value)
183 {
184 print_id_unsigned(stringify_perf_type_id(pmu, value));
185 }
186
__p_config_hw_id(char * buf,size_t size,u64 value)187 static void __p_config_hw_id(char *buf, size_t size, u64 value)
188 {
189 print_id_hex(stringify_perf_hw_id(value));
190 }
191
__p_config_sw_id(char * buf,size_t size,u64 value)192 static void __p_config_sw_id(char *buf, size_t size, u64 value)
193 {
194 print_id_hex(stringify_perf_sw_id(value));
195 }
196
__p_config_hw_cache_id(char * buf,size_t size,u64 value)197 static void __p_config_hw_cache_id(char *buf, size_t size, u64 value)
198 {
199 const char *hw_cache_str = stringify_perf_hw_cache_id(value & 0xff);
200 const char *hw_cache_op_str =
201 stringify_perf_hw_cache_op_id((value & 0xff00) >> 8);
202 const char *hw_cache_op_result_str =
203 stringify_perf_hw_cache_op_result_id((value & 0xff0000) >> 16);
204
205 if (hw_cache_str == NULL || hw_cache_op_str == NULL ||
206 hw_cache_op_result_str == NULL) {
207 snprintf(buf, size, "%#"PRIx64, value);
208 } else {
209 snprintf(buf, size, "%#"PRIx64" (%s | %s | %s)", value,
210 hw_cache_op_result_str, hw_cache_op_str, hw_cache_str);
211 }
212 }
213
214 #ifdef HAVE_LIBTRACEEVENT
__p_config_tracepoint_id(char * buf,size_t size,u64 value)215 static void __p_config_tracepoint_id(char *buf, size_t size, u64 value)
216 {
217 char *str = tracepoint_id_to_name(value);
218
219 print_id_hex(str);
220 free(str);
221 }
222 #endif
223
__p_config_id(struct perf_pmu * pmu,char * buf,size_t size,u32 type,u64 value)224 static void __p_config_id(struct perf_pmu *pmu, char *buf, size_t size, u32 type, u64 value)
225 {
226 const char *name = perf_pmu__name_from_config(pmu, value);
227
228 if (name) {
229 print_id_hex(name);
230 return;
231 }
232 switch (type) {
233 case PERF_TYPE_HARDWARE:
234 return __p_config_hw_id(buf, size, value);
235 case PERF_TYPE_SOFTWARE:
236 return __p_config_sw_id(buf, size, value);
237 case PERF_TYPE_HW_CACHE:
238 return __p_config_hw_cache_id(buf, size, value);
239 case PERF_TYPE_TRACEPOINT:
240 #ifdef HAVE_LIBTRACEEVENT
241 return __p_config_tracepoint_id(buf, size, value);
242 #endif
243 case PERF_TYPE_RAW:
244 case PERF_TYPE_BREAKPOINT:
245 default:
246 snprintf(buf, size, "%#"PRIx64, value);
247 return;
248 }
249 }
250
251 #define BUF_SIZE 1024
252
253 #define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val))
254 #define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val))
255 #define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val))
256 #define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val)
257 #define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val)
258 #define p_read_format(val) __p_read_format(buf, BUF_SIZE, val)
259 #define p_type_id(val) __p_type_id(pmu, buf, BUF_SIZE, val)
260 #define p_config_id(val) __p_config_id(pmu, buf, BUF_SIZE, attr->type, val)
261
262 #define PRINT_ATTRn(_n, _f, _p, _a) \
263 do { \
264 if (_a || attr->_f) { \
265 _p(attr->_f); \
266 ret += attr__fprintf(fp, _n, buf, priv);\
267 } \
268 } while (0)
269
270 #define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p, false)
271
perf_event_attr__fprintf(FILE * fp,struct perf_event_attr * attr,attr__fprintf_f attr__fprintf,void * priv)272 int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
273 attr__fprintf_f attr__fprintf, void *priv)
274 {
275 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);
276 char buf[BUF_SIZE];
277 int ret = 0;
278
279 PRINT_ATTRn("type", type, p_type_id, true);
280 PRINT_ATTRf(size, p_unsigned);
281 PRINT_ATTRn("config", config, p_config_id, true);
282 PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned, false);
283 PRINT_ATTRf(sample_type, p_sample_type);
284 PRINT_ATTRf(read_format, p_read_format);
285
286 PRINT_ATTRf(disabled, p_unsigned);
287 PRINT_ATTRf(inherit, p_unsigned);
288 PRINT_ATTRf(pinned, p_unsigned);
289 PRINT_ATTRf(exclusive, p_unsigned);
290 PRINT_ATTRf(exclude_user, p_unsigned);
291 PRINT_ATTRf(exclude_kernel, p_unsigned);
292 PRINT_ATTRf(exclude_hv, p_unsigned);
293 PRINT_ATTRf(exclude_idle, p_unsigned);
294 PRINT_ATTRf(mmap, p_unsigned);
295 PRINT_ATTRf(comm, p_unsigned);
296 PRINT_ATTRf(freq, p_unsigned);
297 PRINT_ATTRf(inherit_stat, p_unsigned);
298 PRINT_ATTRf(enable_on_exec, p_unsigned);
299 PRINT_ATTRf(task, p_unsigned);
300 PRINT_ATTRf(watermark, p_unsigned);
301 PRINT_ATTRf(precise_ip, p_unsigned);
302 PRINT_ATTRf(mmap_data, p_unsigned);
303 PRINT_ATTRf(sample_id_all, p_unsigned);
304 PRINT_ATTRf(exclude_host, p_unsigned);
305 PRINT_ATTRf(exclude_guest, p_unsigned);
306 PRINT_ATTRf(exclude_callchain_kernel, p_unsigned);
307 PRINT_ATTRf(exclude_callchain_user, p_unsigned);
308 PRINT_ATTRf(mmap2, p_unsigned);
309 PRINT_ATTRf(comm_exec, p_unsigned);
310 PRINT_ATTRf(use_clockid, p_unsigned);
311 PRINT_ATTRf(context_switch, p_unsigned);
312 PRINT_ATTRf(write_backward, p_unsigned);
313 PRINT_ATTRf(namespaces, p_unsigned);
314 PRINT_ATTRf(ksymbol, p_unsigned);
315 PRINT_ATTRf(bpf_event, p_unsigned);
316 PRINT_ATTRf(aux_output, p_unsigned);
317 PRINT_ATTRf(cgroup, p_unsigned);
318 PRINT_ATTRf(text_poke, p_unsigned);
319 PRINT_ATTRf(build_id, p_unsigned);
320 PRINT_ATTRf(inherit_thread, p_unsigned);
321 PRINT_ATTRf(remove_on_exec, p_unsigned);
322 PRINT_ATTRf(sigtrap, p_unsigned);
323
324 PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned, false);
325 PRINT_ATTRf(bp_type, p_unsigned);
326 PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex, false);
327 PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex, false);
328 PRINT_ATTRf(branch_sample_type, p_branch_sample_type);
329 PRINT_ATTRf(sample_regs_user, p_hex);
330 PRINT_ATTRf(sample_stack_user, p_unsigned);
331 PRINT_ATTRf(clockid, p_signed);
332 PRINT_ATTRf(sample_regs_intr, p_hex);
333 PRINT_ATTRf(aux_watermark, p_unsigned);
334 PRINT_ATTRf(sample_max_stack, p_unsigned);
335 PRINT_ATTRf(aux_sample_size, p_unsigned);
336 PRINT_ATTRf(sig_data, p_unsigned);
337
338 return ret;
339 }
340