| // SPDX-License-Identifier: GPL-2.0 |
| #include <linux/hw_breakpoint.h> |
| #include <linux/err.h> |
| #include <linux/zalloc.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <sys/ioctl.h> |
| #include <sys/param.h> |
| #include "term.h" |
| #include "evlist.h" |
| #include "evsel.h" |
| #include <subcmd/parse-options.h> |
| #include "parse-events.h" |
| #include "string2.h" |
| #include "strlist.h" |
| #include "bpf-loader.h" |
| #include "debug.h" |
| #include <api/fs/tracing_path.h> |
| #include <perf/cpumap.h> |
| #include "parse-events-bison.h" |
| #include "parse-events-flex.h" |
| #include "pmu.h" |
| #include "asm/bug.h" |
| #include "util/parse-branch-options.h" |
| #include "util/evsel_config.h" |
| #include "util/event.h" |
| #include "perf.h" |
| #include "util/parse-events-hybrid.h" |
| #include "util/pmu-hybrid.h" |
| #include "tracepoint.h" |
| |
| #define MAX_NAME_LEN 100 |
| |
| struct perf_pmu_event_symbol { |
| char *symbol; |
| enum perf_pmu_event_symbol_type type; |
| }; |
| |
| #ifdef PARSER_DEBUG |
| extern int parse_events_debug; |
| #endif |
| int parse_events_parse(void *parse_state, void *scanner); |
| static int get_config_terms(struct list_head *head_config, |
| struct list_head *head_terms __maybe_unused); |
| static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state, |
| const char *str, char *pmu_name, |
| struct list_head *list); |
| |
| static struct perf_pmu_event_symbol *perf_pmu_events_list; |
| /* |
| * The variable indicates the number of supported pmu event symbols. |
| * 0 means not initialized and ready to init |
| * -1 means failed to init, don't try anymore |
| * >0 is the number of supported pmu event symbols |
| */ |
| static int perf_pmu_events_list_num; |
| |
| struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { |
| [PERF_COUNT_HW_CPU_CYCLES] = { |
| .symbol = "cpu-cycles", |
| .alias = "cycles", |
| }, |
| [PERF_COUNT_HW_INSTRUCTIONS] = { |
| .symbol = "instructions", |
| .alias = "", |
| }, |
| [PERF_COUNT_HW_CACHE_REFERENCES] = { |
| .symbol = "cache-references", |
| .alias = "", |
| }, |
| [PERF_COUNT_HW_CACHE_MISSES] = { |
| .symbol = "cache-misses", |
| .alias = "", |
| }, |
| [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { |
| .symbol = "branch-instructions", |
| .alias = "branches", |
| }, |
| [PERF_COUNT_HW_BRANCH_MISSES] = { |
| .symbol = "branch-misses", |
| .alias = "", |
| }, |
| [PERF_COUNT_HW_BUS_CYCLES] = { |
| .symbol = "bus-cycles", |
| .alias = "", |
| }, |
| [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { |
| .symbol = "stalled-cycles-frontend", |
| .alias = "idle-cycles-frontend", |
| }, |
| [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { |
| .symbol = "stalled-cycles-backend", |
| .alias = "idle-cycles-backend", |
| }, |
| [PERF_COUNT_HW_REF_CPU_CYCLES] = { |
| .symbol = "ref-cycles", |
| .alias = "", |
| }, |
| }; |
| |
| struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { |
| [PERF_COUNT_SW_CPU_CLOCK] = { |
| .symbol = "cpu-clock", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_TASK_CLOCK] = { |
| .symbol = "task-clock", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_PAGE_FAULTS] = { |
| .symbol = "page-faults", |
| .alias = "faults", |
| }, |
| [PERF_COUNT_SW_CONTEXT_SWITCHES] = { |
| .symbol = "context-switches", |
| .alias = "cs", |
| }, |
| [PERF_COUNT_SW_CPU_MIGRATIONS] = { |
| .symbol = "cpu-migrations", |
| .alias = "migrations", |
| }, |
| [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { |
| .symbol = "minor-faults", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { |
| .symbol = "major-faults", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { |
| .symbol = "alignment-faults", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_EMULATION_FAULTS] = { |
| .symbol = "emulation-faults", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_DUMMY] = { |
| .symbol = "dummy", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_BPF_OUTPUT] = { |
| .symbol = "bpf-output", |
| .alias = "", |
| }, |
| [PERF_COUNT_SW_CGROUP_SWITCHES] = { |
| .symbol = "cgroup-switches", |
| .alias = "", |
| }, |
| }; |
| |
| #define __PERF_EVENT_FIELD(config, name) \ |
| ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT) |
| |
| #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW) |
| #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG) |
| #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE) |
| #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT) |
| |
| const char *event_type(int type) |
| { |
| switch (type) { |
| case PERF_TYPE_HARDWARE: |
| return "hardware"; |
| |
| case PERF_TYPE_SOFTWARE: |
| return "software"; |
| |
| case PERF_TYPE_TRACEPOINT: |
| return "tracepoint"; |
| |
| case PERF_TYPE_HW_CACHE: |
| return "hardware-cache"; |
| |
| default: |
| break; |
| } |
| |
| return "unknown"; |
| } |
| |
| static char *get_config_str(struct list_head *head_terms, int type_term) |
| { |
| struct parse_events_term *term; |
| |
| if (!head_terms) |
| return NULL; |
| |
| list_for_each_entry(term, head_terms, list) |
| if (term->type_term == type_term) |
| return term->val.str; |
| |
| return NULL; |
| } |
| |
| static char *get_config_metric_id(struct list_head *head_terms) |
| { |
| return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); |
| } |
| |
| static char *get_config_name(struct list_head *head_terms) |
| { |
| return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); |
| } |
| |
| static struct evsel * |
| __add_event(struct list_head *list, int *idx, |
| struct perf_event_attr *attr, |
| bool init_attr, |
| const char *name, const char *metric_id, struct perf_pmu *pmu, |
| struct list_head *config_terms, bool auto_merge_stats, |
| const char *cpu_list) |
| { |
| struct evsel *evsel; |
| struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : |
| cpu_list ? perf_cpu_map__new(cpu_list) : NULL; |
| |
| if (pmu && attr->type == PERF_TYPE_RAW) |
| perf_pmu__warn_invalid_config(pmu, attr->config, name); |
| |
| if (init_attr) |
| event_attr_init(attr); |
| |
| evsel = evsel__new_idx(attr, *idx); |
| if (!evsel) { |
| perf_cpu_map__put(cpus); |
| return NULL; |
| } |
| |
| (*idx)++; |
| evsel->core.cpus = cpus; |
| evsel->core.own_cpus = perf_cpu_map__get(cpus); |
| evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; |
| evsel->auto_merge_stats = auto_merge_stats; |
| |
| if (name) |
| evsel->name = strdup(name); |
| |
| if (metric_id) |
| evsel->metric_id = strdup(metric_id); |
| |
| if (config_terms) |
| list_splice_init(config_terms, &evsel->config_terms); |
| |
| if (list) |
| list_add_tail(&evsel->core.node, list); |
| |
| return evsel; |
| } |
| |
| struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, |
| const char *name, const char *metric_id, |
| struct perf_pmu *pmu) |
| { |
| return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, |
| metric_id, pmu, /*config_terms=*/NULL, |
| /*auto_merge_stats=*/false, /*cpu_list=*/NULL); |
| } |
| |
| static int add_event(struct list_head *list, int *idx, |
| struct perf_event_attr *attr, const char *name, |
| const char *metric_id, struct list_head *config_terms) |
| { |
| return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, |
| /*pmu=*/NULL, config_terms, |
| /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM; |
| } |
| |
| static int add_event_tool(struct list_head *list, int *idx, |
| enum perf_tool_event tool_event) |
| { |
| struct evsel *evsel; |
| struct perf_event_attr attr = { |
| .type = PERF_TYPE_SOFTWARE, |
| .config = PERF_COUNT_SW_DUMMY, |
| }; |
| |
| evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL, |
| /*metric_id=*/NULL, /*pmu=*/NULL, |
| /*config_terms=*/NULL, /*auto_merge_stats=*/false, |
| /*cpu_list=*/"0"); |
| if (!evsel) |
| return -ENOMEM; |
| evsel->tool_event = tool_event; |
| if (tool_event == PERF_TOOL_DURATION_TIME |
| || tool_event == PERF_TOOL_USER_TIME |
| || tool_event == PERF_TOOL_SYSTEM_TIME) { |
| free((char *)evsel->unit); |
| evsel->unit = strdup("ns"); |
| } |
| return 0; |
| } |
| |
| static int parse_aliases(char *str, const char *const names[][EVSEL__MAX_ALIASES], int size) |
| { |
| int i, j; |
| int n, longest = -1; |
| |
| for (i = 0; i < size; i++) { |
| for (j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { |
| n = strlen(names[i][j]); |
| if (n > longest && !strncasecmp(str, names[i][j], n)) |
| longest = n; |
| } |
| if (longest > 0) |
| return i; |
| } |
| |
| return -1; |
| } |
| |
| typedef int config_term_func_t(struct perf_event_attr *attr, |
| struct parse_events_term *term, |
| struct parse_events_error *err); |
| static int config_term_common(struct perf_event_attr *attr, |
| struct parse_events_term *term, |
| struct parse_events_error *err); |
| static int config_attr(struct perf_event_attr *attr, |
| struct list_head *head, |
| struct parse_events_error *err, |
| config_term_func_t config_term); |
| |
| int parse_events_add_cache(struct list_head *list, int *idx, |
| char *type, char *op_result1, char *op_result2, |
| struct parse_events_error *err, |
| struct list_head *head_config, |
| struct parse_events_state *parse_state) |
| { |
| struct perf_event_attr attr; |
| LIST_HEAD(config_terms); |
| char name[MAX_NAME_LEN]; |
| const char *config_name, *metric_id; |
| int cache_type = -1, cache_op = -1, cache_result = -1; |
| char *op_result[2] = { op_result1, op_result2 }; |
| int i, n, ret; |
| bool hybrid; |
| |
| /* |
| * No fallback - if we cannot get a clear cache type |
| * then bail out: |
| */ |
| cache_type = parse_aliases(type, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX); |
| if (cache_type == -1) |
| return -EINVAL; |
| |
| config_name = get_config_name(head_config); |
| n = snprintf(name, MAX_NAME_LEN, "%s", type); |
| |
| for (i = 0; (i < 2) && (op_result[i]); i++) { |
| char *str = op_result[i]; |
| |
| n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str); |
| |
| if (cache_op == -1) { |
| cache_op = parse_aliases(str, evsel__hw_cache_op, |
| PERF_COUNT_HW_CACHE_OP_MAX); |
| if (cache_op >= 0) { |
| if (!evsel__is_cache_op_valid(cache_type, cache_op)) |
| return -EINVAL; |
| continue; |
| } |
| } |
| |
| if (cache_result == -1) { |
| cache_result = parse_aliases(str, evsel__hw_cache_result, |
| PERF_COUNT_HW_CACHE_RESULT_MAX); |
| if (cache_result >= 0) |
| continue; |
| } |
| } |
| |
| /* |
| * Fall back to reads: |
| */ |
| if (cache_op == -1) |
| cache_op = PERF_COUNT_HW_CACHE_OP_READ; |
| |
| /* |
| * Fall back to accesses: |
| */ |
| if (cache_result == -1) |
| cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; |
| |
| memset(&attr, 0, sizeof(attr)); |
| attr.config = cache_type | (cache_op << 8) | (cache_result << 16); |
| attr.type = PERF_TYPE_HW_CACHE; |
| |
| if (head_config) { |
| if (config_attr(&attr, head_config, err, |
| config_term_common)) |
| return -EINVAL; |
| |
| if (get_config_terms(head_config, &config_terms)) |
| return -ENOMEM; |
| } |
| |
| metric_id = get_config_metric_id(head_config); |
| ret = parse_events__add_cache_hybrid(list, idx, &attr, |
| config_name ? : name, |
| metric_id, |
| &config_terms, |
| &hybrid, parse_state); |
| if (hybrid) |
| goto out_free_terms; |
| |
| ret = add_event(list, idx, &attr, config_name ? : name, metric_id, |
| &config_terms); |
| out_free_terms: |
| free_config_terms(&config_terms); |
| return ret; |
| } |
| |
| static void tracepoint_error(struct parse_events_error *e, int err, |
| const char *sys, const char *name) |
| { |
| const char *str; |
| char help[BUFSIZ]; |
| |
| if (!e) |
| return; |
| |
| /* |
| * We get error directly from syscall errno ( > 0), |
| * or from encoded pointer's error ( < 0). |
| */ |
| err = abs(err); |
| |
| switch (err) { |
| case EACCES: |
| str = "can't access trace events"; |
| break; |
| case ENOENT: |
| str = "unknown tracepoint"; |
| break; |
| default: |
| str = "failed to add tracepoint"; |
| break; |
| } |
| |
| tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); |
| parse_events_error__handle(e, 0, strdup(str), strdup(help)); |
| } |
| |
| static int add_tracepoint(struct list_head *list, int *idx, |
| const char *sys_name, const char *evt_name, |
| struct parse_events_error *err, |
| struct list_head *head_config) |
| { |
| struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); |
| |
| if (IS_ERR(evsel)) { |
| tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name); |
| return PTR_ERR(evsel); |
| } |
| |
| if (head_config) { |
| LIST_HEAD(config_terms); |
| |
| if (get_config_terms(head_config, &config_terms)) |
| return -ENOMEM; |
| list_splice(&config_terms, &evsel->config_terms); |
| } |
| |
| list_add_tail(&evsel->core.node, list); |
| return 0; |
| } |
| |
| static int add_tracepoint_multi_event(struct list_head *list, int *idx, |
| const char *sys_name, const char *evt_name, |
| struct parse_events_error *err, |
| struct list_head *head_config) |
| { |
| char *evt_path; |
| struct dirent *evt_ent; |
| DIR *evt_dir; |
| int ret = 0, found = 0; |
| |
| evt_path = get_events_file(sys_name); |
| if (!evt_path) { |
| tracepoint_error(err, errno, sys_name, evt_name); |
| return -1; |
| } |
| evt_dir = opendir(evt_path); |
| if (!evt_dir) { |
| put_events_file(evt_path); |
| tracepoint_error(err, errno, sys_name, evt_name); |
| return -1; |
| } |
| |
| while (!ret && (evt_ent = readdir(evt_dir))) { |
| if (!strcmp(evt_ent->d_name, ".") |
| || !strcmp(evt_ent->d_name, "..") |
| || !strcmp(evt_ent->d_name, "enable") |
| || !strcmp(evt_ent->d_name, "filter")) |
| continue; |
| |
| if (!strglobmatch(evt_ent->d_name, evt_name)) |
| continue; |
| |
| found++; |
| |
| ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, |
| err, head_config); |
| } |
| |
| if (!found) { |
| tracepoint_error(err, ENOENT, sys_name, evt_name); |
| ret = -1; |
| } |
| |
| put_events_file(evt_path); |
| closedir(evt_dir); |
| return ret; |
| } |
| |
| static int add_tracepoint_event(struct list_head *list, int *idx, |
| const char *sys_name, const char *evt_name, |
| struct parse_events_error *err, |
| struct list_head *head_config) |
| { |
| return strpbrk(evt_name, "*?") ? |
| add_tracepoint_multi_event(list, idx, sys_name, evt_name, |
| err, head_config) : |
| add_tracepoint(list, idx, sys_name, evt_name, |
| err, head_config); |
| } |
| |
| static int add_tracepoint_multi_sys(struct list_head *list, int *idx, |
| const char *sys_name, const char *evt_name, |
| struct parse_events_error *err, |
| struct list_head *head_config) |
| { |
| struct dirent *events_ent; |
| DIR *events_dir; |
| int ret = 0; |
| |
| events_dir = tracing_events__opendir(); |
| if (!events_dir) { |
| tracepoint_error(err, errno, sys_name, evt_name); |
| return -1; |
| } |
| |
| while (!ret && (events_ent = readdir(events_dir))) { |
| if (!strcmp(events_ent->d_name, ".") |
| || !strcmp(events_ent->d_name, "..") |
| || !strcmp(events_ent->d_name, "enable") |
| || !strcmp(events_ent->d_name, "header_event") |
| || !strcmp(events_ent->d_name, "header_page")) |
| continue; |
| |
| if (!strglobmatch(events_ent->d_name, sys_name)) |
| continue; |
| |
| ret = add_tracepoint_event(list, idx, events_ent->d_name, |
| evt_name, err, head_config); |
| } |
| |
| closedir(events_dir); |
| return ret; |
| } |
| |
| #ifdef HAVE_LIBBPF_SUPPORT |
| struct __add_bpf_event_param { |
| struct parse_events_state *parse_state; |
| struct list_head *list; |
| struct list_head *head_config; |
| }; |
| |
| static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj, |
| void *_param) |
| { |
| LIST_HEAD(new_evsels); |
| struct __add_bpf_event_param *param = _param; |
| struct parse_events_state *parse_state = param->parse_state; |
| struct list_head *list = param->list; |
| struct evsel *pos; |
| int err; |
| /* |
| * Check if we should add the event, i.e. if it is a TP but starts with a '!', |
| * then don't add the tracepoint, this will be used for something else, like |
| * adding to a BPF_MAP_TYPE_PROG_ARRAY. |
| * |
| * See tools/perf/examples/bpf/augmented_raw_syscalls.c |
| */ |
| if (group[0] == '!') |
| return 0; |
| |
| pr_debug("add bpf event %s:%s and attach bpf program %d\n", |
| group, event, fd); |
| |
| err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group, |
| event, parse_state->error, |
| param->head_config); |
| if (err) { |
| struct evsel *evsel, *tmp; |
| |
| pr_debug("Failed to add BPF event %s:%s\n", |
| group, event); |
| list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) { |
| list_del_init(&evsel->core.node); |
| evsel__delete(evsel); |
| } |
| return err; |
| } |
| pr_debug("adding %s:%s\n", group, event); |
| |
| list_for_each_entry(pos, &new_evsels, core.node) { |
| pr_debug("adding %s:%s to %p\n", |
| group, event, pos); |
| pos->bpf_fd = fd; |
| pos->bpf_obj = obj; |
| } |
| list_splice(&new_evsels, list); |
| return 0; |
| } |
| |
| int parse_events_load_bpf_obj(struct parse_events_state *parse_state, |
| struct list_head *list, |
| struct bpf_object *obj, |
| struct list_head *head_config) |
| { |
| int err; |
| char errbuf[BUFSIZ]; |
| struct __add_bpf_event_param param = {parse_state, list, head_config}; |
| static bool registered_unprobe_atexit = false; |
| |
| if (IS_ERR(obj) || !obj) { |
| snprintf(errbuf, sizeof(errbuf), |
| "Internal error: load bpf obj with NULL"); |
| err = -EINVAL; |
| goto errout; |
| } |
| |
| /* |
| * Register atexit handler before calling bpf__probe() so |
| * bpf__probe() don't need to unprobe probe points its already |
| * created when failure. |
| */ |
| if (!registered_unprobe_atexit) { |
| atexit(bpf__clear); |
| registered_unprobe_atexit = true; |
| } |
| |
| err = bpf__probe(obj); |
| if (err) { |
| bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf)); |
| goto errout; |
| } |
| |
| err = bpf__load(obj); |
| if (err) { |
| bpf__strerror_load(obj, err, errbuf, sizeof(errbuf)); |
| goto errout; |
| } |
| |
| err = bpf__foreach_event(obj, add_bpf_event, ¶m); |
| if (err) { |
| snprintf(errbuf, sizeof(errbuf), |
| "Attach events in BPF object failed"); |
| goto errout; |
| } |
| |
| return 0; |
| errout: |
| parse_events_error__handle(parse_state->error, 0, |
| strdup(errbuf), strdup("(add -v to see detail)")); |
| return err; |
| } |
| |
| static int |
| parse_events_config_bpf(struct parse_events_state *parse_state, |
| struct bpf_object *obj, |
| struct list_head *head_config) |
| { |
| struct parse_events_term *term; |
| int error_pos; |
| |
| if (!head_config || list_empty(head_config)) |
| return 0; |
| |
| list_for_each_entry(term, head_config, list) { |
| int err; |
| |
| if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) { |
| parse_events_error__handle(parse_state->error, term->err_term, |
| strdup("Invalid config term for BPF object"), |
| NULL); |
| return -EINVAL; |
| } |
| |
| err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos); |
| if (err) { |
| char errbuf[BUFSIZ]; |
| int idx; |
| |
| bpf__strerror_config_obj(obj, term, parse_state->evlist, |
| &error_pos, err, errbuf, |
| sizeof(errbuf)); |
| |
| if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE) |
| idx = term->err_val; |
| else |
| idx = term->err_term + error_pos; |
| |
| parse_events_error__handle(parse_state->error, idx, |
| strdup(errbuf), |
| strdup( |
| "Hint:\tValid config terms:\n" |
| " \tmap:[<arraymap>].value<indices>=[value]\n" |
| " \tmap:[<eventmap>].event<indices>=[event]\n" |
| "\n" |
| " \twhere <indices> is something like [0,3...5] or [all]\n" |
| " \t(add -v to see detail)")); |
| return err; |
| } |
| } |
| return 0; |
| } |
| |
| /* |
| * Split config terms: |
| * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ... |
| * 'call-graph=fp' is 'evt config', should be applied to each |
| * events in bpf.c. |
| * 'map:array.value[0]=1' is 'obj config', should be processed |
| * with parse_events_config_bpf. |
| * |
| * Move object config terms from the first list to obj_head_config. |
| */ |
| static void |
| split_bpf_config_terms(struct list_head *evt_head_config, |
| struct list_head *obj_head_config) |
| { |
| struct parse_events_term *term, *temp; |
| |
| /* |
| * Currently, all possible user config term |
| * belong to bpf object. parse_events__is_hardcoded_term() |
| * happens to be a good flag. |
| * |
| * See parse_events_config_bpf() and |
| * config_term_tracepoint(). |
| */ |
| list_for_each_entry_safe(term, temp, evt_head_config, list) |
| if (!parse_events__is_hardcoded_term(term)) |
| list_move_tail(&term->list, obj_head_config); |
| } |
| |
| int parse_events_load_bpf(struct parse_events_state *parse_state, |
| struct list_head *list, |
| char *bpf_file_name, |
| bool source, |
| struct list_head *head_config) |
| { |
| int err; |
| struct bpf_object *obj; |
| LIST_HEAD(obj_head_config); |
| |
| if (head_config) |
| split_bpf_config_terms(head_config, &obj_head_config); |
| |
| obj = bpf__prepare_load(bpf_file_name, source); |
| if (IS_ERR(obj)) { |
| char errbuf[BUFSIZ]; |
| |
| err = PTR_ERR(obj); |
| |
| if (err == -ENOTSUP) |
| snprintf(errbuf, sizeof(errbuf), |
| "BPF support is not compiled"); |
| else |
| bpf__strerror_prepare_load(bpf_file_name, |
| source, |
| -err, errbuf, |
| sizeof(errbuf)); |
| |
| parse_events_error__handle(parse_state->error, 0, |
| strdup(errbuf), strdup("(add -v to see detail)")); |
| return err; |
| } |
| |
| err = parse_events_load_bpf_obj(parse_state, list, obj, head_config); |
| if (err) |
| return err; |
| err = parse_events_config_bpf(parse_state, obj, &obj_head_config); |
| |
| /* |
| * Caller doesn't know anything about obj_head_config, |
| * so combine them together again before returning. |
| */ |
| if (head_config) |
| list_splice_tail(&obj_head_config, head_config); |
| return err; |
| } |
| #else // HAVE_LIBBPF_SUPPORT |
| int parse_events_load_bpf_obj(struct parse_events_state *parse_state, |
| struct list_head *list __maybe_unused, |
| struct bpf_object *obj __maybe_unused, |
| struct list_head *head_config __maybe_unused) |
| { |
| parse_events_error__handle(parse_state->error, 0, |
| strdup("BPF support is not compiled"), |
| strdup("Make sure libbpf-devel is available at build time.")); |
| return -ENOTSUP; |
| } |
| |
| int parse_events_load_bpf(struct parse_events_state *parse_state, |
| struct list_head *list __maybe_unused, |
| char *bpf_file_name __maybe_unused, |
| bool source __maybe_unused, |
| struct list_head *head_config __maybe_unused) |
| { |
| parse_events_error__handle(parse_state->error, 0, |
| strdup("BPF support is not compiled"), |
| strdup("Make sure libbpf-devel is available at build time.")); |
| return -ENOTSUP; |
| } |
| #endif // HAVE_LIBBPF_SUPPORT |
| |
| static int |
| parse_breakpoint_type(const char *type, struct perf_event_attr *attr) |
| { |
| int i; |
| |
| for (i = 0; i < 3; i++) { |
| if (!type || !type[i]) |
| break; |
| |
| #define CHECK_SET_TYPE(bit) \ |
| do { \ |
| if (attr->bp_type & bit) \ |
| return -EINVAL; \ |
| else \ |
| attr->bp_type |= bit; \ |
| } while (0) |
| |
| switch (type[i]) { |
| case 'r': |
| CHECK_SET_TYPE(HW_BREAKPOINT_R); |
| break; |
| case 'w': |
| CHECK_SET_TYPE(HW_BREAKPOINT_W); |
| break; |
| case 'x': |
| CHECK_SET_TYPE(HW_BREAKPOINT_X); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| #undef CHECK_SET_TYPE |
| |
| if (!attr->bp_type) /* Default */ |
| attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; |
| |
| return 0; |
| } |
| |
| int parse_events_add_breakpoint(struct list_head *list, int *idx, |
| u64 addr, char *type, u64 len) |
| { |
| struct perf_event_attr attr; |
| |
| memset(&attr, 0, sizeof(attr)); |
| attr.bp_addr = addr; |
| |
| if (parse_breakpoint_type(type, &attr)) |
| return -EINVAL; |
| |
| /* Provide some defaults if len is not specified */ |
| if (!len) { |
| if (attr.bp_type == HW_BREAKPOINT_X) |
| len = sizeof(long); |
| else |
| len = HW_BREAKPOINT_LEN_4; |
| } |
| |
| attr.bp_len = len; |
| |
| attr.type = PERF_TYPE_BREAKPOINT; |
| attr.sample_period = 1; |
| |
| return add_event(list, idx, &attr, /*name=*/NULL, /*mertic_id=*/NULL, |
| /*config_terms=*/NULL); |
| } |
| |
| static int check_type_val(struct parse_events_term *term, |
| struct parse_events_error *err, |
| int type) |
| { |
| if (type == term->type_val) |
| return 0; |
| |
| if (err) { |
| parse_events_error__handle(err, term->err_val, |
| type == PARSE_EVENTS__TERM_TYPE_NUM |
| ? strdup("expected numeric value") |
| : strdup("expected string value"), |
| NULL); |
| } |
| return -EINVAL; |
| } |
| |
| /* |
| * Update according to parse-events.l |
| */ |
| static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { |
| [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", |
| [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", |
| [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", |
| [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", |
| [PARSE_EVENTS__TERM_TYPE_NAME] = "name", |
| [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", |
| [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", |
| [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", |
| [PARSE_EVENTS__TERM_TYPE_TIME] = "time", |
| [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", |
| [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", |
| [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", |
| [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", |
| [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", |
| [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", |
| [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", |
| [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", |
| [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", |
| [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", |
| [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", |
| [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", |
| [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", |
| }; |
| |
| static bool config_term_shrinked; |
| |
| static bool |
| config_term_avail(int term_type, struct parse_events_error *err) |
| { |
| char *err_str; |
| |
| if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { |
| parse_events_error__handle(err, -1, |
| strdup("Invalid term_type"), NULL); |
| return false; |
| } |
| if (!config_term_shrinked) |
| return true; |
| |
| switch (term_type) { |
| case PARSE_EVENTS__TERM_TYPE_CONFIG: |
| case PARSE_EVENTS__TERM_TYPE_CONFIG1: |
| case PARSE_EVENTS__TERM_TYPE_CONFIG2: |
| case PARSE_EVENTS__TERM_TYPE_NAME: |
| case PARSE_EVENTS__TERM_TYPE_METRIC_ID: |
| case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: |
| case PARSE_EVENTS__TERM_TYPE_PERCORE: |
| return true; |
| default: |
| if (!err) |
| return false; |
| |
| /* term_type is validated so indexing is safe */ |
| if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", |
| config_term_names[term_type]) >= 0) |
| parse_events_error__handle(err, -1, err_str, NULL); |
| return false; |
| } |
| } |
| |
| void parse_events__shrink_config_terms(void) |
| { |
| config_term_shrinked = true; |
| } |
| |
| static int config_term_common(struct perf_event_attr *attr, |
| struct parse_events_term *term, |
| struct parse_events_error *err) |
| { |
| #define CHECK_TYPE_VAL(type) \ |
| do { \ |
| if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ |
| return -EINVAL; \ |
| } while (0) |
| |
| switch (term->type_term) { |
| case PARSE_EVENTS__TERM_TYPE_CONFIG: |
| CHECK_TYPE_VAL(NUM); |
| attr->config = term->val.num; |
| break; |
| case PARSE_EVENTS__TERM_TYPE_CONFIG1: |
| CHECK_TYPE_VAL(NUM); |
| attr->config1 = term->val.num; |
| break; |
| case PARSE_EVENTS__TERM_TYPE_CONFIG2: |
| CHECK_TYPE_VAL(NUM); |
| attr->config2 = term->val.num; |
| break; |
| case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: |
| CHECK_TYPE_VAL(STR); |
| if (strcmp(term->val.str, "no") && |
| parse_branch_str(term->val.str, |
| &attr->branch_sample_type)) { |
| parse_events_error__handle(err, term->err_val, |
| strdup("invalid branch sample type"), |
| NULL); |
| return -EINVAL; |
| } |
| break; |
| case PARSE_EVENTS__TERM_TYPE_TIME: |
| CHECK_TYPE_VAL(NUM); |
| if (term->val.num > 1) { |
| parse_events_error__handle(err, term->err_val, |
| strdup("expected 0 or 1"), |
| NULL); |
| return -EINVAL; |
| } |
| break; |
| case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: |
| CHECK_TYPE_VAL(STR); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_STACKSIZE: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_INHERIT: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_NOINHERIT: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_OVERWRITE: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_NAME: |
| CHECK_TYPE_VAL(STR); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_METRIC_ID: |
| CHECK_TYPE_VAL(STR); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_MAX_STACK: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_PERCORE: |
| CHECK_TYPE_VAL(NUM); |
| if ((unsigned int)term->val.num > 1) { |
| parse_events_error__handle(err, term->err_val, |
| strdup("expected 0 or 1"), |
| NULL); |
| return -EINVAL; |
| } |
| break; |
| case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: |
| CHECK_TYPE_VAL(NUM); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: |
| CHECK_TYPE_VAL(NUM); |
| if (term->val.num > UINT_MAX) { |
| parse_events_error__handle(err, term->err_val, |
| strdup("too big"), |
| NULL); |
| return -EINVAL; |
| } |
| break; |
| default: |
| parse_events_error__handle(err, term->err_term, |
| strdup("unknown term"), |
| parse_events_formats_error_string(NULL)); |
| return -EINVAL; |
| } |
| |
| /* |
| * Check term availability after basic checking so |
| * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. |
| * |
| * If check availability at the entry of this function, |
| * user will see "'<sysfs term>' is not usable in 'perf stat'" |
| * if an invalid config term is provided for legacy events |
| * (for example, instructions/badterm/...), which is confusing. |
| */ |
| if (!config_term_avail(term->type_term, err)) |
| return -EINVAL; |
| return 0; |
| #undef CHECK_TYPE_VAL |
| } |
| |
| static int config_term_pmu(struct perf_event_attr *attr, |
| struct parse_events_term *term, |
| struct parse_events_error *err) |
| { |
| if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || |
| term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) |
| /* |
| * Always succeed for sysfs terms, as we dont know |
| * at this point what type they need to have. |
| */ |
| return 0; |
| else |
| return config_term_common(attr, term, err); |
| } |
| |
| static int config_term_tracepoint(struct perf_event_attr *attr, |
| struct parse_events_term *term, |
| struct parse_events_error *err) |
| { |
| switch (term->type_term) { |
| case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: |
| case PARSE_EVENTS__TERM_TYPE_STACKSIZE: |
| case PARSE_EVENTS__TERM_TYPE_INHERIT: |
| case PARSE_EVENTS__TERM_TYPE_NOINHERIT: |
| case PARSE_EVENTS__TERM_TYPE_MAX_STACK: |
| case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: |
| case PARSE_EVENTS__TERM_TYPE_OVERWRITE: |
| case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: |
| case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: |
| case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: |
| return config_term_common(attr, term, err); |
| default: |
| if (err) { |
| parse_events_error__handle(err, term->err_term, |
| strdup("unknown term"), |
| strdup("valid terms: call-graph,stack-size\n")); |
| } |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int config_attr(struct perf_event_attr *attr, |
| struct list_head *head, |
| struct parse_events_error *err, |
| config_term_func_t config_term) |
| { |
| struct parse_events_term *term; |
| |
| list_for_each_entry(term, head, list) |
| if (config_term(attr, term, err)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static int get_config_terms(struct list_head *head_config, |
| struct list_head *head_terms __maybe_unused) |
| { |
| #define ADD_CONFIG_TERM(__type, __weak) \ |
| struct evsel_config_term *__t; \ |
| \ |
| __t = zalloc(sizeof(*__t)); \ |
| if (!__t) \ |
| return -ENOMEM; \ |
| \ |
| INIT_LIST_HEAD(&__t->list); \ |
| __t->type = EVSEL__CONFIG_TERM_ ## __type; \ |
| __t->weak = __weak; \ |
| list_add_tail(&__t->list, head_terms) |
| |
| #define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ |
| do { \ |
| ADD_CONFIG_TERM(__type, __weak); \ |
| __t->val.__name = __val; \ |
| } while (0) |
| |
| #define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ |
| do { \ |
| ADD_CONFIG_TERM(__type, __weak); \ |
| __t->val.str = strdup(__val); \ |
| if (!__t->val.str) { \ |
| zfree(&__t); \ |
| return -ENOMEM; \ |
| } \ |
| __t->free_str = true; \ |
| } while (0) |
| |
| struct parse_events_term *term; |
| |
| list_for_each_entry(term, head_config, list) { |
| switch (term->type_term) { |
| case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: |
| ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: |
| ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_TIME: |
| ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: |
| ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: |
| ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_STACKSIZE: |
| ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, |
| term->val.num, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_INHERIT: |
| ADD_CONFIG_TERM_VAL(INHERIT, inherit, |
| term->val.num ? 1 : 0, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_NOINHERIT: |
| ADD_CONFIG_TERM_VAL(INHERIT, inherit, |
| term->val.num ? 0 : 1, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_MAX_STACK: |
| ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, |
| term->val.num, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: |
| ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, |
| term->val.num, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_OVERWRITE: |
| ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, |
| term->val.num ? 1 : 0, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: |
| ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, |
| term->val.num ? 0 : 1, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_DRV_CFG: |
| ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_PERCORE: |
| ADD_CONFIG_TERM_VAL(PERCORE, percore, |
| term->val.num ? true : false, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: |
| ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, |
| term->val.num ? 1 : 0, term->weak); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: |
| ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, |
| term->val.num, term->weak); |
| break; |
| default: |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| /* |
| * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for |
| * each bit of attr->config that the user has changed. |
| */ |
| static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config, |
| struct list_head *head_terms) |
| { |
| struct parse_events_term *term; |
| u64 bits = 0; |
| int type; |
| |
| list_for_each_entry(term, head_config, list) { |
| switch (term->type_term) { |
| case PARSE_EVENTS__TERM_TYPE_USER: |
| type = perf_pmu__format_type(&pmu->format, term->config); |
| if (type != PERF_PMU_FORMAT_VALUE_CONFIG) |
| continue; |
| bits |= perf_pmu__format_bits(&pmu->format, term->config); |
| break; |
| case PARSE_EVENTS__TERM_TYPE_CONFIG: |
| bits = ~(u64)0; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| if (bits) |
| ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); |
| |
| #undef ADD_CONFIG_TERM |
| return 0; |
| } |
| |
| int parse_events_add_tracepoint(struct list_head *list, int *idx, |
| const char *sys, const char *event, |
| struct parse_events_error *err, |
| struct list_head *head_config) |
| { |
| if (head_config) { |
| struct perf_event_attr attr; |
| |
| if (config_attr(&attr, head_config, err, |
| config_term_tracepoint)) |
| return -EINVAL; |
| } |
| |
| if (strpbrk(sys, "*?")) |
| return add_tracepoint_multi_sys(list, idx, sys, event, |
| err, head_config); |
| else |
| return add_tracepoint_event(list, idx, sys, event, |
| err, head_config); |
| } |
| |
| int parse_events_add_numeric(struct parse_events_state *parse_state, |
| struct list_head *list, |
| u32 type, u64 config, |
| struct list_head *head_config) |
| { |
| struct perf_event_attr attr; |
| LIST_HEAD(config_terms); |
| const char *name, *metric_id; |
| bool hybrid; |
| int ret; |
| |
| memset(&attr, 0, sizeof(attr)); |
| attr.type = type; |
| attr.config = config; |
| |
| if (head_config) { |
| if (config_attr(&attr, head_config, parse_state->error, |
| config_term_common)) |
| return -EINVAL; |
| |
| if (get_config_terms(head_config, &config_terms)) |
| return -ENOMEM; |
| } |
| |
| name = get_config_name(head_config); |
| metric_id = get_config_metric_id(head_config); |
| ret = parse_events__add_numeric_hybrid(parse_state, list, &attr, |
| name, metric_id, |
| &config_terms, &hybrid); |
| if (hybrid) |
| goto out_free_terms; |
| |
| ret = add_event(list, &parse_state->idx, &attr, name, metric_id, |
| &config_terms); |
| out_free_terms: |
| free_config_terms(&config_terms); |
| return ret; |
| } |
| |
| int parse_events_add_tool(struct parse_events_state *parse_state, |
| struct list_head *list, |
| int tool_event) |
| { |
| return add_event_tool(list, &parse_state->idx, tool_event); |
| } |
| |
| static bool config_term_percore(struct list_head *config_terms) |
| { |
| struct evsel_config_term *term; |
| |
| list_for_each_entry(term, config_terms, list) { |
| if (term->type == EVSEL__CONFIG_TERM_PERCORE) |
| return term->val.percore; |
| } |
| |
| return false; |
| } |
| |
| static int parse_events__inside_hybrid_pmu(struct parse_events_state *parse_state, |
| struct list_head *list, char *name, |
| struct list_head *head_config) |
| { |
| struct parse_events_term *term; |
| int ret = -1; |
| |
| if (parse_state->fake_pmu || !head_config || list_empty(head_config) || |
| !perf_pmu__is_hybrid(name)) { |
| return -1; |
| } |
| |
| /* |
| * More than one term in list. |
| */ |
| if (head_config->next && head_config->next->next != head_config) |
| return -1; |
| |
| term = list_first_entry(head_config, struct parse_events_term, list); |
| if (term && term->config && strcmp(term->config, "event")) { |
| ret = parse_events__with_hybrid_pmu(parse_state, term->config, |
| name, list); |
| } |
| |
| return ret; |
| } |
| |
| int parse_events_add_pmu(struct parse_events_state *parse_state, |
| struct list_head *list, char *name, |
| struct list_head *head_config, |
| bool auto_merge_stats, |
| bool use_alias) |
| { |
| struct perf_event_attr attr; |
| struct perf_pmu_info info; |
| struct perf_pmu *pmu; |
| struct evsel *evsel; |
| struct parse_events_error *err = parse_state->error; |
| bool use_uncore_alias; |
| LIST_HEAD(config_terms); |
| |
| pmu = parse_state->fake_pmu ?: perf_pmu__find(name); |
| |
| if (verbose > 1 && !(pmu && pmu->selectable)) { |
| fprintf(stderr, "Attempting to add event pmu '%s' with '", |
| name); |
| if (head_config) { |
| struct parse_events_term *term; |
| |
| list_for_each_entry(term, head_config, list) { |
| fprintf(stderr, "%s,", term->config); |
| } |
| } |
| fprintf(stderr, "' that may result in non-fatal errors\n"); |
| } |
| |
| if (!pmu) { |
| char *err_str; |
| |
| if (asprintf(&err_str, |
| "Cannot find PMU `%s'. Missing kernel support?", |
| name) >= 0) |
| parse_events_error__handle(err, 0, err_str, NULL); |
| return -EINVAL; |
| } |
| |
| if (pmu->default_config) { |
| memcpy(&attr, pmu->default_config, |
| sizeof(struct perf_event_attr)); |
| } else { |
| memset(&attr, 0, sizeof(attr)); |
| } |
| |
| use_uncore_alias = (pmu->is_uncore && use_alias); |
| |
| if (!head_config) { |
| attr.type = pmu->type; |
| evsel = __add_event(list, &parse_state->idx, &attr, |
| /*init_attr=*/true, /*name=*/NULL, |
| /*metric_id=*/NULL, pmu, |
| /*config_terms=*/NULL, auto_merge_stats, |
| /*cpu_list=*/NULL); |
| if (evsel) { |
| evsel->pmu_name = name ? strdup(name) : NULL; |
| evsel->use_uncore_alias = use_uncore_alias; |
| return 0; |
| } else { |
| return -ENOMEM; |
| } |
| } |
| |
| if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info)) |
| return -EINVAL; |
| |
| if (verbose > 1) { |
| fprintf(stderr, "After aliases, add event pmu '%s' with '", |
| name); |
| if (head_config) { |
| struct parse_events_term *term; |
| |
| list_for_each_entry(term, head_config, list) { |
| fprintf(stderr, "%s,", term->config); |
| } |
| } |
| fprintf(stderr, "' that may result in non-fatal errors\n"); |
| } |
| |
| /* |
| * Configure hardcoded terms first, no need to check |
| * return value when called with fail == 0 ;) |
| */ |
| if (config_attr(&attr, head_config, parse_state->error, config_term_pmu)) |
| return -EINVAL; |
| |
| if (get_config_terms(head_config, &config_terms)) |
| return -ENOMEM; |
| |
| /* |
| * When using default config, record which bits of attr->config were |
| * changed by the user. |
| */ |
| if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) |
| return -ENOMEM; |
| |
| if (!parse_events__inside_hybrid_pmu(parse_state, list, name, |
| head_config)) { |
| return 0; |
| } |
| |
| if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { |
| free_config_terms(&config_terms); |
| return -EINVAL; |
| } |
| |
| evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, |
| get_config_name(head_config), |
| get_config_metric_id(head_config), pmu, |
| &config_terms, auto_merge_stats, /*cpu_list=*/NULL); |
| if (!evsel) |
| return -ENOMEM; |
| |
| if (evsel->name) |
| evsel->use_config_name = true; |
| |
| evsel->pmu_name = name ? strdup(name) : NULL; |
| evsel->use_uncore_alias = use_uncore_alias; |
| evsel->percore = config_term_percore(&evsel->config_terms); |
| |
| if (parse_state->fake_pmu) |
| return 0; |
| |
| free((char *)evsel->unit); |
| evsel->unit = strdup(info.unit); |
| evsel->scale = info.scale; |
| evsel->per_pkg = info.per_pkg; |
| evsel->snapshot = info.snapshot; |
| evsel->metric_expr = info.metric_expr; |
| evsel->metric_name = info.metric_name; |
| return 0; |
| } |
| |
| int parse_events_multi_pmu_add(struct parse_events_state *parse_state, |
| char *str, struct list_head *head, |
| struct list_head **listp) |
| { |
| struct parse_events_term *term; |
| struct list_head *list = NULL; |
| struct list_head *orig_head = NULL; |
| struct perf_pmu *pmu = NULL; |
| int ok = 0; |
| char *config; |
| |
| *listp = NULL; |
| |
| if (!head) { |
| head = malloc(sizeof(struct list_head)); |
| if (!head) |
| goto out_err; |
| |
| INIT_LIST_HEAD(head); |
| } |
| config = strdup(str); |
| if (!config) |
| goto out_err; |
| |
| if (parse_events_term__num(&term, |
| PARSE_EVENTS__TERM_TYPE_USER, |
| config, 1, false, &config, |
| NULL) < 0) { |
| free(config); |
| goto out_err; |
| } |
| list_add_tail(&term->list, head); |
| |
| /* Add it for all PMUs that support the alias */ |
| list = malloc(sizeof(struct list_head)); |
| if (!list) |
| goto out_err; |
| |
| INIT_LIST_HEAD(list); |
| |
| while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
| struct perf_pmu_alias *alias; |
| |
| list_for_each_entry(alias, &pmu->aliases, list) { |
| if (!strcasecmp(alias->name, str)) { |
| parse_events_copy_term_list(head, &orig_head); |
| if (!parse_events_add_pmu(parse_state, list, |
| pmu->name, orig_head, |
| true, true)) { |
| pr_debug("%s -> %s/%s/\n", str, |
| pmu->name, alias->str); |
| ok++; |
| } |
| parse_events_terms__delete(orig_head); |
| } |
| } |
| } |
| |
| if (parse_state->fake_pmu) { |
| if (!parse_events_add_pmu(parse_state, list, str, head, |
| true, true)) { |
| pr_debug("%s -> %s/%s/\n", str, "fake_pmu", str); |
| ok++; |
| } |
| } |
| |
| out_err: |
| if (ok) |
| *listp = list; |
| else |
| free(list); |
| |
| parse_events_terms__delete(head); |
| return ok ? 0 : -1; |
| } |
| |
| int parse_events__modifier_group(struct list_head *list, |
| char *event_mod) |
| { |
| return parse_events__modifier_event(list, event_mod, true); |
| } |
| |
| /* |
| * Check if the two uncore PMUs are from the same uncore block |
| * The format of the uncore PMU name is uncore_#blockname_#pmuidx |
| */ |
| static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b) |
| { |
| char *end_a, *end_b; |
| |
| end_a = strrchr(pmu_name_a, '_'); |
| end_b = strrchr(pmu_name_b, '_'); |
| |
| if (!end_a || !end_b) |
| return false; |
| |
| if ((end_a - pmu_name_a) != (end_b - pmu_name_b)) |
| return false; |
| |
| return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0); |
| } |
| |
| static int |
| parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list, |
| struct parse_events_state *parse_state) |
| { |
| struct evsel *evsel, *leader; |
| uintptr_t *leaders; |
| bool is_leader = true; |
| int i, nr_pmu = 0, total_members, ret = 0; |
| |
| leader = list_first_entry(list, struct evsel, core.node); |
| evsel = list_last_entry(list, struct evsel, core.node); |
| total_members = evsel->core.idx - leader->core.idx + 1; |
| |
| leaders = calloc(total_members, sizeof(uintptr_t)); |
| if (WARN_ON(!leaders)) |
| return 0; |
| |
| /* |
| * Going through the whole group and doing sanity check. |
| * All members must use alias, and be from the same uncore block. |
| * Also, storing the leader events in an array. |
| */ |
| __evlist__for_each_entry(list, evsel) { |
| |
| /* Only split the uncore group which members use alias */ |
| if (!evsel->use_uncore_alias) |
| goto out; |
| |
| /* The events must be from the same uncore block */ |
| if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name)) |
| goto out; |
| |
| if (!is_leader) |
| continue; |
| /* |
| * If the event's PMU name starts to repeat, it must be a new |
| * event. That can be used to distinguish the leader from |
| * other members, even they have the same event name. |
| */ |
| if ((leader != evsel) && |
| !strcmp(leader->pmu_name, evsel->pmu_name)) { |
| is_leader = false; |
| continue; |
| } |
| |
| /* Store the leader event for each PMU */ |
| leaders[nr_pmu++] = (uintptr_t) evsel; |
| } |
| |
| /* only one event alias */ |
| if (nr_pmu == total_members) { |
| parse_state->nr_groups--; |
| goto handled; |
| } |
| |
| /* |
| * An uncore event alias is a joint name which means the same event |
| * runs on all PMUs of a block. |
| * Perf doesn't support mixed events from different PMUs in the same |
| * group. The big group has to be split into multiple small groups |
| * which only include the events from the same PMU. |
| * |
| * Here the uncore event aliases must be from the same uncore block. |
| * The number of PMUs must be same for each alias. The number of new |
| * small groups equals to the number of PMUs. |
| * Setting the leader event for corresponding members in each group. |
| */ |
| i = 0; |
| __evlist__for_each_entry(list, evsel) { |
| if (i >= nr_pmu) |
| i = 0; |
| evsel__set_leader(evsel, (struct evsel *) leaders[i++]); |
| } |
| |
| /* The number of members and group name are same for each group */ |
| for (i = 0; i < nr_pmu; i++) { |
| evsel = (struct evsel *) leaders[i]; |
| evsel->core.nr_members = total_members / nr_pmu; |
| evsel->group_name = name ? strdup(name) : NULL; |
| } |
| |
| /* Take the new small groups into account */ |
| parse_state->nr_groups += nr_pmu - 1; |
| |
| handled: |
| ret = 1; |
| out: |
| free(leaders); |
| return ret; |
| } |
| |
| __weak struct evsel *arch_evlist__leader(struct list_head *list) |
| { |
| return list_first_entry(list, struct evsel, core.node); |
| } |
| |
| void parse_events__set_leader(char *name, struct list_head *list, |
| struct parse_events_state *parse_state) |
| { |
| struct evsel *leader; |
| |
| if (list_empty(list)) { |
| WARN_ONCE(true, "WARNING: failed to set leader: empty list"); |
| return; |
| } |
| |
| if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state)) |
| return; |
| |
| leader = arch_evlist__leader(list); |
| __perf_evlist__set_leader(list, &leader->core); |
| leader->group_name = name ? strdup(name) : NULL; |
| list_move(&leader->core.node, list); |
| } |
| |
| /* list_event is assumed to point to malloc'ed memory */ |
| void parse_events_update_lists(struct list_head *list_event, |
| struct list_head *list_all) |
| { |
| /* |
| * Called for single event definition. Update the |
| * 'all event' list, and reinit the 'single event' |
| * list, for next event definition. |
| */ |
| list_splice_tail(list_event, list_all); |
| free(list_event); |
| } |
| |
| struct event_modifier { |
| int eu; |
| int ek; |
| int eh; |
| int eH; |
| int eG; |
| int eI; |
| int precise; |
| int precise_max; |
| int exclude_GH; |
| int sample_read; |
| int pinned; |
| int weak; |
| int exclusive; |
| int bpf_counter; |
| }; |
| |
| static int get_event_modifier(struct event_modifier *mod, char *str, |
| struct evsel *evsel) |
| { |
| int eu = evsel ? evsel->core.attr.exclude_user : 0; |
| int ek = evsel ? evsel->core.attr.exclude_kernel : 0; |
| int eh = evsel ? evsel->core.attr.exclude_hv : 0; |
| int eH = evsel ? evsel->core.attr.exclude_host : 0; |
| int eG = evsel ? evsel->core.attr.exclude_guest : 0; |
| int eI = evsel ? evsel->core.attr.exclude_idle : 0; |
| int precise = evsel ? evsel->core.attr.precise_ip : 0; |
| int precise_max = 0; |
| int sample_read = 0; |
| int pinned = evsel ? evsel->core.attr.pinned : 0; |
| int exclusive = evsel ? evsel->core.attr.exclusive : 0; |
| |
| int exclude = eu | ek | eh; |
| int exclude_GH = evsel ? evsel->exclude_GH : 0; |
| int weak = 0; |
| int bpf_counter = 0; |
| |
| memset(mod, 0, sizeof(*mod)); |
| |
| while (*str) { |
| if (*str == 'u') { |
| if (!exclude) |
| exclude = eu = ek = eh = 1; |
| if (!exclude_GH && !perf_guest) |
| eG = 1; |
| eu = 0; |
| } else if (*str == 'k') { |
| if (!exclude) |
| exclude = eu = ek = eh = 1; |
| ek = 0; |
| } else if (*str == 'h') { |
| if (!exclude) |
| exclude = eu = ek = eh = 1; |
| eh = 0; |
| } else if (*str == 'G') { |
| if (!exclude_GH) |
| exclude_GH = eG = eH = 1; |
| eG = 0; |
| } else if (*str == 'H') { |
| if (!exclude_GH) |
| exclude_GH = eG = eH = 1; |
| eH = 0; |
| } else if (*str == 'I') { |
| eI = 1; |
| } else if (*str == 'p') { |
| precise++; |
| /* use of precise requires exclude_guest */ |
| if (!exclude_GH) |
| eG = 1; |
| } else if (*str == 'P') { |
| precise_max = 1; |
| } else if (*str == 'S') { |
| sample_read = 1; |
| } else if (*str == 'D') { |
| pinned = 1; |
| } else if (*str == 'e') { |
| exclusive = 1; |
| } else if (*str == 'W') { |
| weak = 1; |
| } else if (*str == 'b') { |
| bpf_counter = 1; |
| } else |
| break; |
| |
| ++str; |
| } |
| |
| /* |
| * precise ip: |
| * |
| * 0 - SAMPLE_IP can have arbitrary skid |
| * 1 - SAMPLE_IP must have constant skid |
| * 2 - SAMPLE_IP requested to have 0 skid |
| * 3 - SAMPLE_IP must have 0 skid |
| * |
| * See also PERF_RECORD_MISC_EXACT_IP |
| */ |
| if (precise > 3) |
| return -EINVAL; |
| |
| mod->eu = eu; |
| mod->ek = ek; |
| mod->eh = eh; |
| mod->eH = eH; |
| mod->eG = eG; |
| mod->eI = eI; |
| mod->precise = precise; |
| mod->precise_max = precise_max; |
| mod->exclude_GH = exclude_GH; |
| mod->sample_read = sample_read; |
| mod->pinned = pinned; |
| mod->weak = weak; |
| mod->bpf_counter = bpf_counter; |
| mod->exclusive = exclusive; |
| |
| return 0; |
| } |
| |
| /* |
| * Basic modifier sanity check to validate it contains only one |
| * instance of any modifier (apart from 'p') present. |
| */ |
| static int check_modifier(char *str) |
| { |
| char *p = str; |
| |
| /* The sizeof includes 0 byte as well. */ |
| if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1)) |
| return -1; |
| |
| while (*p) { |
| if (*p != 'p' && strchr(p + 1, *p)) |
| return -1; |
| p++; |
| } |
| |
| return 0; |
| } |
| |
| int parse_events__modifier_event(struct list_head *list, char *str, bool add) |
| { |
| struct evsel *evsel; |
| struct event_modifier mod; |
| |
| if (str == NULL) |
| return 0; |
| |
| if (check_modifier(str)) |
| return -EINVAL; |
| |
| if (!add && get_event_modifier(&mod, str, NULL)) |
| return -EINVAL; |
| |
| __evlist__for_each_entry(list, evsel) { |
| if (add && get_event_modifier(&mod, str, evsel)) |
| return -EINVAL; |
| |
| evsel->core.attr.exclude_user = mod.eu; |
| evsel->core.attr.exclude_kernel = mod.ek; |
| evsel->core.attr.exclude_hv = mod.eh; |
| evsel->core.attr.precise_ip = mod.precise; |
| evsel->core.attr.exclude_host = mod.eH; |
| evsel->core.attr.exclude_guest = mod.eG; |
| evsel->core.attr.exclude_idle = mod.eI; |
| evsel->exclude_GH = mod.exclude_GH; |
| evsel->sample_read = mod.sample_read; |
| evsel->precise_max = mod.precise_max; |
| evsel->weak_group = mod.weak; |
| evsel->bpf_counter = mod.bpf_counter; |
| |
| if (evsel__is_group_leader(evsel)) { |
| evsel->core.attr.pinned = mod.pinned; |
| evsel->core.attr.exclusive = mod.exclusive; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int parse_events_name(struct list_head *list, const char *name) |
| { |
| struct evsel *evsel; |
| |
| __evlist__for_each_entry(list, evsel) { |
| if (!evsel->name) |
| evsel->name = strdup(name); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| comp_pmu(const void *p1, const void *p2) |
| { |
| struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1; |
| struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2; |
| |
| return strcasecmp(pmu1->symbol, pmu2->symbol); |
| } |
| |
| static void perf_pmu__parse_cleanup(void) |
| { |
| if (perf_pmu_events_list_num > 0) { |
| struct perf_pmu_event_symbol *p; |
| int i; |
| |
| for (i = 0; i < perf_pmu_events_list_num; i++) { |
| p = perf_pmu_events_list + i; |
| zfree(&p->symbol); |
| } |
| zfree(&perf_pmu_events_list); |
| perf_pmu_events_list_num = 0; |
| } |
| } |
| |
| #define SET_SYMBOL(str, stype) \ |
| do { \ |
| p->symbol = str; \ |
| if (!p->symbol) \ |
| goto err; \ |
| p->type = stype; \ |
| } while (0) |
| |
| /* |
| * Read the pmu events list from sysfs |
| * Save it into perf_pmu_events_list |
| */ |
| static void perf_pmu__parse_init(void) |
| { |
| |
| struct perf_pmu *pmu = NULL; |
| struct perf_pmu_alias *alias; |
| int len = 0; |
| |
| pmu = NULL; |
| while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
| list_for_each_entry(alias, &pmu->aliases, list) { |
| char *tmp = strchr(alias->name, '-'); |
| |
| if (tmp) { |
| char *tmp2 = NULL; |
| |
| tmp2 = strchr(tmp + 1, '-'); |
| len++; |
| if (tmp2) |
| len++; |
| } |
| |
| len++; |
| } |
| } |
| |
| if (len == 0) { |
| perf_pmu_events_list_num = -1; |
| return; |
| } |
| perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len); |
| if (!perf_pmu_events_list) |
| return; |
| perf_pmu_events_list_num = len; |
| |
| len = 0; |
| pmu = NULL; |
| while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
| list_for_each_entry(alias, &pmu->aliases, list) { |
| struct perf_pmu_event_symbol *p = perf_pmu_events_list + len; |
| char *tmp = strchr(alias->name, '-'); |
| char *tmp2 = NULL; |
| |
| if (tmp) |
| tmp2 = strchr(tmp + 1, '-'); |
| if (tmp2) { |
| SET_SYMBOL(strndup(alias->name, tmp - alias->name), |
| PMU_EVENT_SYMBOL_PREFIX); |
| p++; |
| tmp++; |
| SET_SYMBOL(strndup(tmp, tmp2 - tmp), PMU_EVENT_SYMBOL_SUFFIX); |
| p++; |
| SET_SYMBOL(strdup(++tmp2), PMU_EVENT_SYMBOL_SUFFIX2); |
| len += 3; |
| } else if (tmp) { |
| SET_SYMBOL(strndup(alias->name, tmp - alias->name), |
| PMU_EVENT_SYMBOL_PREFIX); |
| p++; |
| SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX); |
| len += 2; |
| } else { |
| SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL); |
| len++; |
| } |
| } |
| } |
| qsort(perf_pmu_events_list, len, |
| sizeof(struct perf_pmu_event_symbol), comp_pmu); |
| |
| return; |
| err: |
| perf_pmu__parse_cleanup(); |
| } |
| |
| /* |
| * This function injects special term in |
| * perf_pmu_events_list so the test code |
| * can check on this functionality. |
| */ |
| int perf_pmu__test_parse_init(void) |
| { |
| struct perf_pmu_event_symbol *list, *tmp, symbols[] = { |
| {(char *)"read", PMU_EVENT_SYMBOL}, |
| {(char *)"event", PMU_EVENT_SYMBOL_PREFIX}, |
| {(char *)"two", PMU_EVENT_SYMBOL_SUFFIX}, |
| {(char *)"hyphen", PMU_EVENT_SYMBOL_SUFFIX}, |
| {(char *)"hyph", PMU_EVENT_SYMBOL_SUFFIX2}, |
| }; |
| unsigned long i, j; |
| |
| tmp = list = malloc(sizeof(*list) * ARRAY_SIZE(symbols)); |
| if (!list) |
| return -ENOMEM; |
| |
| for (i = 0; i < ARRAY_SIZE(symbols); i++, tmp++) { |
| tmp->type = symbols[i].type; |
| tmp->symbol = strdup(symbols[i].symbol); |
| if (!tmp->symbol) |
| goto err_free; |
| } |
| |
| perf_pmu_events_list = list; |
| perf_pmu_events_list_num = ARRAY_SIZE(symbols); |
| |
| qsort(perf_pmu_events_list, ARRAY_SIZE(symbols), |
| sizeof(struct perf_pmu_event_symbol), comp_pmu); |
| return 0; |
| |
| err_free: |
| for (j = 0, tmp = list; j < i; j++, tmp++) |
| free(tmp->symbol); |
| free(list); |
| return -ENOMEM; |
| } |
| |
| enum perf_pmu_event_symbol_type |
| perf_pmu__parse_check(const char *name) |
| { |
| struct perf_pmu_event_symbol p, *r; |
| |
| /* scan kernel pmu events from sysfs if needed */ |
| if (perf_pmu_events_list_num == 0) |
| perf_pmu__parse_init(); |
| /* |
| * name "cpu" could be prefix of cpu-cycles or cpu// events. |
| * cpu-cycles has been handled by hardcode. |
| * So it must be cpu// events, not kernel pmu event. |
| */ |
| if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu")) |
| return PMU_EVENT_SYMBOL_ERR; |
| |
| p.symbol = strdup(name); |
| r = bsearch(&p, perf_pmu_events_list, |
| (size_t) perf_pmu_events_list_num, |
| sizeof(struct perf_pmu_event_symbol), comp_pmu); |
| zfree(&p.symbol); |
| return r ? r->type : PMU_EVENT_SYMBOL_ERR; |
| } |
| |
| static int parse_events__scanner(const char *str, |
| struct parse_events_state *parse_state) |
| { |
| YY_BUFFER_STATE buffer; |
| void *scanner; |
| int ret; |
| |
| ret = parse_events_lex_init_extra(parse_state, &scanner); |
| if (ret) |
| return ret; |
| |
| buffer = parse_events__scan_string(str, scanner); |
| |
| #ifdef PARSER_DEBUG |
| parse_events_debug = 1; |
| parse_events_set_debug(1, scanner); |
| #endif |
| ret = parse_events_parse(parse_state, scanner); |
| |
| parse_events__flush_buffer(buffer, scanner); |
| parse_events__delete_buffer(buffer, scanner); |
| parse_events_lex_destroy(scanner); |
| return ret; |
| } |
| |
| /* |
| * parse event config string, return a list of event terms. |
| */ |
| int parse_events_terms(struct list_head *terms, const char *str) |
| { |
| struct parse_events_state parse_state = { |
| .terms = NULL, |
| .stoken = PE_START_TERMS, |
| }; |
| int ret; |
| |
| ret = parse_events__scanner(str, &parse_state); |
| perf_pmu__parse_cleanup(); |
| |
| if (!ret) { |
| list_splice(parse_state.terms, terms); |
| zfree(&parse_state.terms); |
| return 0; |
| } |
| |
| parse_events_terms__delete(parse_state.terms); |
| return ret; |
| } |
| |
| static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state, |
| const char *str, char *pmu_name, |
| struct list_head *list) |
| { |
| struct parse_events_state ps = { |
| .list = LIST_HEAD_INIT(ps.list), |
| .stoken = PE_START_EVENTS, |
| .hybrid_pmu_name = pmu_name, |
| .idx = parse_state->idx, |
| }; |
| int ret; |
| |
| ret = parse_events__scanner(str, &ps); |
| perf_pmu__parse_cleanup(); |
| |
| if (!ret) { |
| if (!list_empty(&ps.list)) { |
| list_splice(&ps.list, list); |
| parse_state->idx = ps.idx; |
| return 0; |
| } else |
| return -1; |
| } |
| |
| return ret; |
| } |
| |
| int __parse_events(struct evlist *evlist, const char *str, |
| struct parse_events_error *err, struct perf_pmu *fake_pmu) |
| { |
| struct parse_events_state parse_state = { |
| .list = LIST_HEAD_INIT(parse_state.list), |
| .idx = evlist->core.nr_entries, |
| .error = err, |
| .evlist = evlist, |
| .stoken = PE_START_EVENTS, |
| .fake_pmu = fake_pmu, |
| }; |
| int ret; |
| |
| ret = parse_events__scanner(str, &parse_state); |
| perf_pmu__parse_cleanup(); |
| |
| if (!ret && list_empty(&parse_state.list)) { |
| WARN_ONCE(true, "WARNING: event parser found nothing\n"); |
| return -1; |
| } |
| |
| /* |
| * Add list to the evlist even with errors to allow callers to clean up. |
| */ |
| evlist__splice_list_tail(evlist, &parse_state.list); |
| |
| if (!ret) { |
| struct evsel *last; |
| |
| evlist->core.nr_groups += parse_state.nr_groups; |
| last = evlist__last(evlist); |
| last->cmdline_group_boundary = true; |
| |
| return 0; |
| } |
| |
| /* |
| * There are 2 users - builtin-record and builtin-test objects. |
| * Both call evlist__delete in case of error, so we dont |
| * need to bother. |
| */ |
| return ret; |
| } |
| |
| int parse_event(struct evlist *evlist, const char *str) |
| { |
| struct parse_events_error err; |
| int ret; |
| |
| parse_events_error__init(&err); |
| ret = parse_events(evlist, str, &err); |
| parse_events_error__exit(&err); |
| return ret; |
| } |
| |
| void parse_events_error__init(struct parse_events_error *err) |
| { |
| bzero(err, sizeof(*err)); |
| } |
| |
| void parse_events_error__exit(struct parse_events_error *err) |
| { |
| zfree(&err->str); |
| zfree(&err->help); |
| zfree(&err->first_str); |
| zfree(&err->first_help); |
| } |
| |
| void parse_events_error__handle(struct parse_events_error *err, int idx, |
| char *str, char *help) |
| { |
| if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) |
| goto out_free; |
| switch (err->num_errors) { |
| case 0: |
| err->idx = idx; |
| err->str = str; |
| err->help = help; |
| break; |
| case 1: |
| err->first_idx = err->idx; |
| err->idx = idx; |
| err->first_str = err->str; |
| err->str = str; |
| err->first_help = err->help; |
| err->help = help; |
| break; |
| default: |
| pr_debug("Multiple errors dropping message: %s (%s)\n", |
| err->str, err->help); |
| free(err->str); |
| err->str = str; |
| free(err->help); |
| err->help = help; |
| break; |
| } |
| err->num_errors++; |
| return; |
| |
| out_free: |
| free(str); |
| free(help); |
| } |
| |
| #define MAX_WIDTH 1000 |
| static int get_term_width(void) |
| { |
| struct winsize ws; |
| |
| get_term_dimensions(&ws); |
| return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; |
| } |
| |
| static void __parse_events_error__print(int err_idx, const char *err_str, |
| const char *err_help, const char *event) |
| { |
| const char *str = "invalid or unsupported event: "; |
| char _buf[MAX_WIDTH]; |
| char *buf = (char *) event; |
| int idx = 0; |
| if (err_str) { |
| /* -2 for extra '' in the final fprintf */ |
| int width = get_term_width() - 2; |
| int len_event = strlen(event); |
| int len_str, max_len, cut = 0; |
| |
| /* |
| * Maximum error index indent, we will cut |
| * the event string if it's bigger. |
| */ |
| int max_err_idx = 13; |
| |
| /* |
| * Let's be specific with the message when |
| * we have the precise error. |
| */ |
| str = "event syntax error: "; |
| len_str = strlen(str); |
| max_len = width - len_str; |
| |
| buf = _buf; |
| |
| /* We're cutting from the beginning. */ |
| if (err_idx > max_err_idx) |
| cut = err_idx - max_err_idx; |
| |
| strncpy(buf, event + cut, max_len); |
| |
| /* Mark cut parts with '..' on both sides. */ |
| if (cut) |
| buf[0] = buf[1] = '.'; |
| |
| if ((len_event - cut) > max_len) { |
| buf[max_len - 1] = buf[max_len - 2] = '.'; |
| buf[max_len] = 0; |
| } |
| |
| idx = len_str + err_idx - cut; |
| } |
| |
| fprintf(stderr, "%s'%s'\n", str, buf); |
| if (idx) { |
| fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); |
| if (err_help) |
| fprintf(stderr, "\n%s\n", err_help); |
| } |
| } |
| |
| void parse_events_error__print(struct parse_events_error *err, |
| const char *event) |
| { |
| if (!err->num_errors) |
| return; |
| |
| __parse_events_error__print(err->idx, err->str, err->help, event); |
| |
| if (err->num_errors > 1) { |
| fputs("\nInitial error:\n", stderr); |
| __parse_events_error__print(err->first_idx, err->first_str, |
| err->first_help, event); |
| } |
| } |
| |
| #undef MAX_WIDTH |
| |
| int parse_events_option(const struct option *opt, const char *str, |
| int unset __maybe_unused) |
| { |
| struct evlist *evlist = *(struct evlist **)opt->value; |
| struct parse_events_error err; |
| int ret; |
| |
| parse_events_error__init(&err); |
| ret = parse_events(evlist, str, &err); |
| |
| if (ret) { |
| parse_events_error__print(&err, str); |
| fprintf(stderr, "Run 'perf list' for a list of valid events\n"); |
| } |
| parse_events_error__exit(&err); |
| |
| return ret; |
| } |
| |
| int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) |
| { |
| struct evlist **evlistp = opt->value; |
| int ret; |
| |
| if (*evlistp == NULL) { |
| *evlistp = evlist__new(); |
| |
| if (*evlistp == NULL) { |
| fprintf(stderr, "Not enough memory to create evlist\n"); |
| return -1; |
| } |
| } |
| |
| ret = parse_events_option(opt, str, unset); |
| if (ret) { |
| evlist__delete(*evlistp); |
| *evlistp = NULL; |
| } |
| |
| return ret; |
| } |
| |
| static int |
| foreach_evsel_in_last_glob(struct evlist *evlist, |
| int (*func)(struct evsel *evsel, |
| const void *arg), |
| const void *arg) |
| { |
| struct evsel *last = NULL; |
| int err; |
| |
| /* |
| * Don't return when list_empty, give func a chance to report |
| * error when it found last == NULL. |
| * |
| * So no need to WARN here, let *func do this. |
| */ |
| if (evlist->core.nr_entries > 0) |
| last = evlist__last(evlist); |
| |
| do { |
| err = (*func)(last, arg); |
| if (err) |
| return -1; |
| if (!last) |
| return 0; |
| |
| if (last->core.node.prev == &evlist->core.entries) |
| return 0; |
| last = list_entry(last->core.node.prev, struct evsel, core.node); |
| } while (!last->cmdline_group_boundary); |
| |
| return 0; |
| } |
| |
| static int set_filter(struct evsel *evsel, const void *arg) |
| { |
| const char *str = arg; |
| bool found = false; |
| int nr_addr_filters = 0; |
| struct perf_pmu *pmu = NULL; |
| |
| if (evsel == NULL) { |
| fprintf(stderr, |
| "--filter option should follow a -e tracepoint or HW tracer option\n"); |
| return -1; |
| } |
| |
| if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { |
| if (evsel__append_tp_filter(evsel, str) < 0) { |
| fprintf(stderr, |
| "not enough memory to hold filter string\n"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| while ((pmu = perf_pmu__scan(pmu)) != NULL) |
| if (pmu->type == evsel->core.attr.type) { |
| found = true; |
| break; |
| } |
| |
| if (found) |
| perf_pmu__scan_file(pmu, "nr_addr_filters", |
| "%d", &nr_addr_filters); |
| |
| if (!nr_addr_filters) { |
| fprintf(stderr, |
| "This CPU does not support address filtering\n"); |
| return -1; |
| } |
| |
| if (evsel__append_addr_filter(evsel, str) < 0) { |
| fprintf(stderr, |
| "not enough memory to hold filter string\n"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int parse_filter(const struct option *opt, const char *str, |
| int unset __maybe_unused) |
| { |
| struct evlist *evlist = *(struct evlist **)opt->value; |
| |
| return foreach_evsel_in_last_glob(evlist, set_filter, |
| (const void *)str); |
| } |
| |
| static int add_exclude_perf_filter(struct evsel *evsel, |
| const void *arg __maybe_unused) |
| { |
| char new_filter[64]; |
| |
| if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { |
| fprintf(stderr, |
| "--exclude-perf option should follow a -e tracepoint option\n"); |
| return -1; |
| } |
| |
| snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); |
| |
| if (evsel__append_tp_filter(evsel, new_filter) < 0) { |
| fprintf(stderr, |
| "not enough memory to hold filter string\n"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int exclude_perf(const struct option *opt, |
| const char *arg __maybe_unused, |
| int unset __maybe_unused) |
| { |
| struct evlist *evlist = *(struct evlist **)opt->value; |
| |
| return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, |
| NULL); |
| } |
| |
| int parse_events__is_hardcoded_term(struct parse_events_term *term) |
| { |
| return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; |
| } |
| |
| static int new_term(struct parse_events_term **_term, |
| struct parse_events_term *temp, |
| char *str, u64 num) |
| { |
| struct parse_events_term *term; |
| |
| term = malloc(sizeof(*term)); |
| if (!term) |
| return -ENOMEM; |
| |
| *term = *temp; |
| INIT_LIST_HEAD(&term->list); |
| term->weak = false; |
| |
| switch (term->type_val) { |
| case PARSE_EVENTS__TERM_TYPE_NUM: |
| term->val.num = num; |
| break; |
| case PARSE_EVENTS__TERM_TYPE_STR: |
| term->val.str = str; |
| break; |
| default: |
| free(term); |
| return -EINVAL; |
| } |
| |
| *_term = term; |
| return 0; |
| } |
| |
| int parse_events_term__num(struct parse_events_term **term, |
| int type_term, char *config, u64 num, |
| bool no_value, |
| void *loc_term_, void *loc_val_) |
| { |
| YYLTYPE *loc_term = loc_term_; |
| YYLTYPE *loc_val = loc_val_; |
| |
| struct parse_events_term temp = { |
| .type_val = PARSE_EVENTS__TERM_TYPE_NUM, |
| .type_term = type_term, |
| .config = config ? : strdup(config_term_names[type_term]), |
| .no_value = no_value, |
| .err_term = loc_term ? loc_term->first_column : 0, |
| .err_val = loc_val ? loc_val->first_column : 0, |
| }; |
| |
| return new_term(term, &temp, NULL, num); |
| } |
| |
| int parse_events_term__str(struct parse_events_term **term, |
| int type_term, char *config, char *str, |
| void *loc_term_, void *loc_val_) |
| { |
| YYLTYPE *loc_term = loc_term_; |
| YYLTYPE *loc_val = loc_val_; |
| |
| struct parse_events_term temp = { |
| .type_val = PARSE_EVENTS__TERM_TYPE_STR, |
| .type_term = type_term, |
| .config = config, |
| .err_term = loc_term ? loc_term->first_column : 0, |
| .err_val = loc_val ? loc_val->first_column : 0, |
| }; |
| |
| return new_term(term, &temp, str, 0); |
| } |
| |
| int parse_events_term__sym_hw(struct parse_events_term **term, |
| char *config, unsigned idx) |
| { |
| struct event_symbol *sym; |
| char *str; |
| struct parse_events_term temp = { |
| .type_val = PARSE_EVENTS__TERM_TYPE_STR, |
| .type_term = PARSE_EVENTS__TERM_TYPE_USER, |
| .config = config, |
| }; |
| |
| if (!temp.config) { |
| temp.config = strdup("event"); |
| if (!temp.config) |
| return -ENOMEM; |
| } |
| BUG_ON(idx >= PERF_COUNT_HW_MAX); |
| sym = &event_symbols_hw[idx]; |
| |
| str = strdup(sym->symbol); |
| if (!str) |
| return -ENOMEM; |
| return new_term(term, &temp, str, 0); |
| } |
| |
| int parse_events_term__clone(struct parse_events_term **new, |
| struct parse_events_term *term) |
| { |
| char *str; |
| struct parse_events_term temp = { |
| .type_val = term->type_val, |
| .type_term = term->type_term, |
| .config = NULL, |
| .err_term = term->err_term, |
| .err_val = term->err_val, |
| }; |
| |
| if (term->config) { |
| temp.config = strdup(term->config); |
| if (!temp.config) |
| return -ENOMEM; |
| } |
| if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) |
| return new_term(new, &temp, NULL, term->val.num); |
| |
| str = strdup(term->val.str); |
| if (!str) |
| return -ENOMEM; |
| return new_term(new, &temp, str, 0); |
| } |
| |
| void parse_events_term__delete(struct parse_events_term *term) |
| { |
| if (term->array.nr_ranges) |
| zfree(&term->array.ranges); |
| |
| if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) |
| zfree(&term->val.str); |
| |
| zfree(&term->config); |
| free(term); |
| } |
| |
| int parse_events_copy_term_list(struct list_head *old, |
| struct list_head **new) |
| { |
| struct parse_events_term *term, *n; |
| int ret; |
| |
| if (!old) { |
| *new = NULL; |
| return 0; |
| } |
| |
| *new = malloc(sizeof(struct list_head)); |
| if (!*new) |
| return -ENOMEM; |
| INIT_LIST_HEAD(*new); |
| |
| list_for_each_entry (term, old, list) { |
| ret = parse_events_term__clone(&n, term); |
| if (ret) |
| return ret; |
| list_add_tail(&n->list, *new); |
| } |
| return 0; |
| } |
| |
| void parse_events_terms__purge(struct list_head *terms) |
| { |
| struct parse_events_term *term, *h; |
| |
| list_for_each_entry_safe(term, h, terms, list) { |
| list_del_init(&term->list); |
| parse_events_term__delete(term); |
| } |
| } |
| |
| void parse_events_terms__delete(struct list_head *terms) |
| { |
| if (!terms) |
| return; |
| parse_events_terms__purge(terms); |
| free(terms); |
| } |
| |
| void parse_events__clear_array(struct parse_events_array *a) |
| { |
| zfree(&a->ranges); |
| } |
| |
| void parse_events_evlist_error(struct parse_events_state *parse_state, |
| int idx, const char *str) |
| { |
| if (!parse_state->error) |
| return; |
| |
| parse_events_error__handle(parse_state->error, idx, strdup(str), NULL); |
| } |
| |
| static void config_terms_list(char *buf, size_t buf_sz) |
| { |
| int i; |
| bool first = true; |
| |
| buf[0] = '\0'; |
| for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { |
| const char *name = config_term_names[i]; |
| |
| if (!config_term_avail(i, NULL)) |
| continue; |
| if (!name) |
| continue; |
| if (name[0] == '<') |
| continue; |
| |
| if (strlen(buf) + strlen(name) + 2 >= buf_sz) |
| return; |
| |
| if (!first) |
| strcat(buf, ","); |
| else |
| first = false; |
| strcat(buf, name); |
| } |
| } |
| |
| /* |
| * Return string contains valid config terms of an event. |
| * @additional_terms: For terms such as PMU sysfs terms. |
| */ |
| char *parse_events_formats_error_string(char *additional_terms) |
| { |
| char *str; |
| /* "no-overwrite" is the longest name */ |
| char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * |
| (sizeof("no-overwrite") - 1)]; |
| |
| config_terms_list(static_terms, sizeof(static_terms)); |
| /* valid terms */ |
| if (additional_terms) { |
| if (asprintf(&str, "valid terms: %s,%s", |
| additional_terms, static_terms) < 0) |
| goto fail; |
| } else { |
| if (asprintf(&str, "valid terms: %s", static_terms) < 0) |
| goto fail; |
| } |
| return str; |
| |
| fail: |
| return NULL; |
| } |
| |
| struct evsel *parse_events__add_event_hybrid(struct list_head *list, int *idx, |
| struct perf_event_attr *attr, |
| const char *name, |
| const char *metric_id, |
| struct perf_pmu *pmu, |
| struct list_head *config_terms) |
| { |
| return __add_event(list, idx, attr, /*init_attr=*/true, name, metric_id, |
| pmu, config_terms, /*auto_merge_stats=*/false, |
| /*cpu_list=*/NULL); |
| } |