v4.19.13 snapshot.
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
new file mode 100644
index 0000000..f8cd3e7
--- /dev/null
+++ b/tools/perf/util/parse-events.c
@@ -0,0 +1,2755 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/hw_breakpoint.h>
+#include <linux/err.h>
+#include <dirent.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/param.h>
+#include "term.h"
+#include "../perf.h"
+#include "evlist.h"
+#include "evsel.h"
+#include <subcmd/parse-options.h>
+#include "parse-events.h"
+#include <subcmd/exec-cmd.h>
+#include "string2.h"
+#include "strlist.h"
+#include "symbol.h"
+#include "cache.h"
+#include "header.h"
+#include "bpf-loader.h"
+#include "debug.h"
+#include <api/fs/tracing_path.h>
+#include "parse-events-bison.h"
+#define YY_EXTRA_TYPE int
+#include "parse-events-flex.h"
+#include "pmu.h"
+#include "thread_map.h"
+#include "cpumap.h"
+#include "probe-file.h"
+#include "asm/bug.h"
+#include "util/parse-branch-options.h"
+#include "metricgroup.h"
+
+#define MAX_NAME_LEN 100
+
+#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 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 = "",
+ },
+};
+
+#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)
+
+#define for_each_subsystem(sys_dir, sys_dirent) \
+ while ((sys_dirent = readdir(sys_dir)) != NULL) \
+ if (sys_dirent->d_type == DT_DIR && \
+ (strcmp(sys_dirent->d_name, ".")) && \
+ (strcmp(sys_dirent->d_name, "..")))
+
+static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
+{
+ char evt_path[MAXPATHLEN];
+ int fd;
+
+ snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
+ fd = open(evt_path, O_RDONLY);
+ if (fd < 0)
+ return -EINVAL;
+ close(fd);
+
+ return 0;
+}
+
+#define for_each_event(dir_path, evt_dir, evt_dirent) \
+ while ((evt_dirent = readdir(evt_dir)) != NULL) \
+ if (evt_dirent->d_type == DT_DIR && \
+ (strcmp(evt_dirent->d_name, ".")) && \
+ (strcmp(evt_dirent->d_name, "..")) && \
+ (!tp_event_has_id(dir_path, evt_dirent)))
+
+#define MAX_EVENT_LENGTH 512
+
+
+struct tracepoint_path *tracepoint_id_to_path(u64 config)
+{
+ struct tracepoint_path *path = NULL;
+ DIR *sys_dir, *evt_dir;
+ struct dirent *sys_dirent, *evt_dirent;
+ char id_buf[24];
+ int fd;
+ u64 id;
+ char evt_path[MAXPATHLEN];
+ char *dir_path;
+
+ sys_dir = tracing_events__opendir();
+ if (!sys_dir)
+ return NULL;
+
+ for_each_subsystem(sys_dir, sys_dirent) {
+ dir_path = get_events_file(sys_dirent->d_name);
+ if (!dir_path)
+ continue;
+ evt_dir = opendir(dir_path);
+ if (!evt_dir)
+ goto next;
+
+ for_each_event(dir_path, evt_dir, evt_dirent) {
+
+ scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
+ evt_dirent->d_name);
+ fd = open(evt_path, O_RDONLY);
+ if (fd < 0)
+ continue;
+ if (read(fd, id_buf, sizeof(id_buf)) < 0) {
+ close(fd);
+ continue;
+ }
+ close(fd);
+ id = atoll(id_buf);
+ if (id == config) {
+ put_events_file(dir_path);
+ closedir(evt_dir);
+ closedir(sys_dir);
+ path = zalloc(sizeof(*path));
+ if (!path)
+ return NULL;
+ path->system = malloc(MAX_EVENT_LENGTH);
+ if (!path->system) {
+ free(path);
+ return NULL;
+ }
+ path->name = malloc(MAX_EVENT_LENGTH);
+ if (!path->name) {
+ zfree(&path->system);
+ free(path);
+ return NULL;
+ }
+ strncpy(path->system, sys_dirent->d_name,
+ MAX_EVENT_LENGTH);
+ strncpy(path->name, evt_dirent->d_name,
+ MAX_EVENT_LENGTH);
+ return path;
+ }
+ }
+ closedir(evt_dir);
+next:
+ put_events_file(dir_path);
+ }
+
+ closedir(sys_dir);
+ return NULL;
+}
+
+struct tracepoint_path *tracepoint_name_to_path(const char *name)
+{
+ struct tracepoint_path *path = zalloc(sizeof(*path));
+ char *str = strchr(name, ':');
+
+ if (path == NULL || str == NULL) {
+ free(path);
+ return NULL;
+ }
+
+ path->system = strndup(name, str - name);
+ path->name = strdup(str+1);
+
+ if (path->system == NULL || path->name == NULL) {
+ zfree(&path->system);
+ zfree(&path->name);
+ zfree(&path);
+ }
+
+ return path;
+}
+
+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 int parse_events__is_name_term(struct parse_events_term *term)
+{
+ return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
+}
+
+static char *get_config_name(struct list_head *head_terms)
+{
+ struct parse_events_term *term;
+
+ if (!head_terms)
+ return NULL;
+
+ list_for_each_entry(term, head_terms, list)
+ if (parse_events__is_name_term(term))
+ return term->val.str;
+
+ return NULL;
+}
+
+static struct perf_evsel *
+__add_event(struct list_head *list, int *idx,
+ struct perf_event_attr *attr,
+ char *name, struct perf_pmu *pmu,
+ struct list_head *config_terms, bool auto_merge_stats)
+{
+ struct perf_evsel *evsel;
+ struct cpu_map *cpus = pmu ? pmu->cpus : NULL;
+
+ event_attr_init(attr);
+
+ evsel = perf_evsel__new_idx(attr, *idx);
+ if (!evsel)
+ return NULL;
+
+ (*idx)++;
+ evsel->cpus = cpu_map__get(cpus);
+ evsel->own_cpus = cpu_map__get(cpus);
+ evsel->system_wide = pmu ? pmu->is_uncore : false;
+ evsel->auto_merge_stats = auto_merge_stats;
+
+ if (name)
+ evsel->name = strdup(name);
+
+ if (config_terms)
+ list_splice(config_terms, &evsel->config_terms);
+
+ list_add_tail(&evsel->node, list);
+ return evsel;
+}
+
+static int add_event(struct list_head *list, int *idx,
+ struct perf_event_attr *attr, char *name,
+ struct list_head *config_terms)
+{
+ return __add_event(list, idx, attr, name, NULL, config_terms, false) ? 0 : -ENOMEM;
+}
+
+static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
+{
+ int i, j;
+ int n, longest = -1;
+
+ for (i = 0; i < size; i++) {
+ for (j = 0; j < PERF_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 perf_event_attr attr;
+ LIST_HEAD(config_terms);
+ char name[MAX_NAME_LEN], *config_name;
+ int cache_type = -1, cache_op = -1, cache_result = -1;
+ char *op_result[2] = { op_result1, op_result2 };
+ int i, n;
+
+ /*
+ * No fallback - if we cannot get a clear cache type
+ * then bail out:
+ */
+ cache_type = parse_aliases(type, perf_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, perf_evsel__hw_cache_op,
+ PERF_COUNT_HW_CACHE_OP_MAX);
+ if (cache_op >= 0) {
+ if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
+ return -EINVAL;
+ continue;
+ }
+ }
+
+ if (cache_result == -1) {
+ cache_result = parse_aliases(str, perf_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;
+ }
+ return add_event(list, idx, &attr, config_name ? : name, &config_terms);
+}
+
+static void tracepoint_error(struct parse_events_error *e, int err,
+ const char *sys, const char *name)
+{
+ 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:
+ e->str = strdup("can't access trace events");
+ break;
+ case ENOENT:
+ e->str = strdup("unknown tracepoint");
+ break;
+ default:
+ e->str = strdup("failed to add tracepoint");
+ break;
+ }
+
+ tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
+ e->help = 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 perf_evsel *evsel;
+
+ evsel = perf_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->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;
+}
+
+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,
+ 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 perf_evsel *pos;
+ int err;
+
+ 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 perf_evsel *evsel, *tmp;
+
+ pr_debug("Failed to add BPF event %s:%s\n",
+ group, event);
+ list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
+ list_del(&evsel->node);
+ perf_evsel__delete(evsel);
+ }
+ return err;
+ }
+ pr_debug("adding %s:%s\n", group, event);
+
+ list_for_each_entry(pos, &new_evsels, node) {
+ pr_debug("adding %s:%s to %p\n",
+ group, event, pos);
+ pos->bpf_fd = fd;
+ }
+ 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_state->error->help = strdup("(add -v to see detail)");
+ parse_state->error->str = strdup(errbuf);
+ 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) {
+ char errbuf[BUFSIZ];
+ int err;
+
+ if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
+ snprintf(errbuf, sizeof(errbuf),
+ "Invalid config term for BPF object");
+ errbuf[BUFSIZ - 1] = '\0';
+
+ parse_state->error->idx = term->err_term;
+ parse_state->error->str = strdup(errbuf);
+ return -EINVAL;
+ }
+
+ err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
+ if (err) {
+ bpf__strerror_config_obj(obj, term, parse_state->evlist,
+ &error_pos, err, errbuf,
+ sizeof(errbuf));
+ parse_state->error->help = 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)");
+ parse_state->error->str = strdup(errbuf);
+ if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
+ parse_state->error->idx = term->err_val;
+ else
+ parse_state->error->idx = term->err_term + error_pos;
+ 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;
+
+ /*
+ * Currectly, all possible user config term
+ * belong to bpf object. parse_events__is_hardcoded_term()
+ * happends 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_state->error->help = strdup("(add -v to see detail)");
+ parse_state->error->str = strdup(errbuf);
+ 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 returnning.
+ */
+ if (head_config)
+ list_splice_tail(&obj_head_config, head_config);
+ return err;
+}
+
+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,
+ void *ptr, char *type, u64 len)
+{
+ struct perf_event_attr attr;
+
+ memset(&attr, 0, sizeof(attr));
+ attr.bp_addr = (unsigned long) ptr;
+
+ 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, NULL, 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) {
+ err->idx = term->err_val;
+ if (type == PARSE_EVENTS__TERM_TYPE_NUM)
+ err->str = strdup("expected numeric value");
+ else
+ err->str = strdup("expected string value");
+ }
+ 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_OVERWRITE] = "overwrite",
+ [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
+ [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
+};
+
+static bool config_term_shrinked;
+
+static bool
+config_term_avail(int term_type, struct parse_events_error *err)
+{
+ if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
+ err->str = strdup("Invalid term_type");
+ 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_SAMPLE_PERIOD:
+ 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)
+ 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)) {
+ err->str = strdup("invalid branch sample type");
+ err->idx = term->err_val;
+ return -EINVAL;
+ }
+ break;
+ case PARSE_EVENTS__TERM_TYPE_TIME:
+ CHECK_TYPE_VAL(NUM);
+ if (term->val.num > 1) {
+ err->str = strdup("expected 0 or 1");
+ err->idx = term->err_val;
+ 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_MAX_STACK:
+ CHECK_TYPE_VAL(NUM);
+ break;
+ default:
+ err->str = strdup("unknown term");
+ err->idx = term->err_term;
+ err->help = parse_events_formats_error_string(NULL);
+ return -EINVAL;
+ }
+
+ /*
+ * Check term availbility after basic checking so
+ * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
+ *
+ * If check availbility 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_OVERWRITE:
+ case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
+ return config_term_common(attr, term, err);
+ default:
+ if (err) {
+ err->idx = term->err_term;
+ err->str = strdup("unknown term");
+ err->help = 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, __name, __val) \
+do { \
+ struct perf_evsel_config_term *__t; \
+ \
+ __t = zalloc(sizeof(*__t)); \
+ if (!__t) \
+ return -ENOMEM; \
+ \
+ INIT_LIST_HEAD(&__t->list); \
+ __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
+ __t->val.__name = __val; \
+ __t->weak = term->weak; \
+ list_add_tail(&__t->list, head_terms); \
+} 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(PERIOD, period, term->val.num);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
+ ADD_CONFIG_TERM(FREQ, freq, term->val.num);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_TIME:
+ ADD_CONFIG_TERM(TIME, time, term->val.num);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
+ ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
+ ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
+ ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_INHERIT:
+ ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
+ ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
+ ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
+ ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
+ ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
+ ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
+ break;
+ default:
+ break;
+ }
+ }
+#undef ADD_EVSEL_CONFIG
+ 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);
+
+ 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;
+ }
+
+ return add_event(list, &parse_state->idx, &attr,
+ get_config_name(head_config), &config_terms);
+}
+
+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 perf_evsel *evsel;
+ struct parse_events_error *err = parse_state->error;
+ bool use_uncore_alias;
+ LIST_HEAD(config_terms);
+
+ pmu = perf_pmu__find(name);
+ if (!pmu) {
+ if (asprintf(&err->str,
+ "Cannot find PMU `%s'. Missing kernel support?",
+ name) < 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, NULL, pmu, NULL, auto_merge_stats);
+ if (evsel) {
+ evsel->pmu_name = name;
+ evsel->use_uncore_alias = use_uncore_alias;
+ return 0;
+ } else {
+ return -ENOMEM;
+ }
+ }
+
+ if (perf_pmu__check_alias(pmu, head_config, &info))
+ return -EINVAL;
+
+ /*
+ * 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;
+
+ if (perf_pmu__config(pmu, &attr, head_config, parse_state->error))
+ return -EINVAL;
+
+ evsel = __add_event(list, &parse_state->idx, &attr,
+ get_config_name(head_config), pmu,
+ &config_terms, auto_merge_stats);
+ if (evsel) {
+ evsel->unit = 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;
+ evsel->pmu_name = name;
+ evsel->use_uncore_alias = use_uncore_alias;
+ }
+
+ return evsel ? 0 : -ENOMEM;
+}
+
+int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
+ char *str, struct list_head **listp)
+{
+ struct list_head *head;
+ struct parse_events_term *term;
+ struct list_head *list;
+ struct perf_pmu *pmu = NULL;
+ int ok = 0;
+
+ *listp = NULL;
+ /* Add it for all PMUs that support the alias */
+ list = malloc(sizeof(struct list_head));
+ if (!list)
+ return -1;
+ 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)) {
+ head = malloc(sizeof(struct list_head));
+ if (!head)
+ return -1;
+ INIT_LIST_HEAD(head);
+ if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
+ str, 1, false, &str, NULL) < 0)
+ return -1;
+ list_add_tail(&term->list, head);
+
+ if (!parse_events_add_pmu(parse_state, list,
+ pmu->name, head,
+ true, true)) {
+ pr_debug("%s -> %s/%s/\n", str,
+ pmu->name, alias->str);
+ ok++;
+ }
+
+ parse_events_terms__delete(head);
+ }
+ }
+ }
+ if (!ok)
+ return -1;
+ *listp = list;
+ return 0;
+}
+
+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 perf_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 perf_evsel, node);
+ evsel = list_last_entry(list, struct perf_evsel, node);
+ total_members = evsel->idx - leader->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) && (leader->pmu_name == evsel->pmu_name)) {
+ is_leader = false;
+ continue;
+ }
+ /* The name is always alias name */
+ WARN_ON(strcmp(leader->name, evsel->name));
+
+ /* 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->leader = (struct perf_evsel *) leaders[i++];
+ }
+
+ /* The number of members and group name are same for each group */
+ for (i = 0; i < nr_pmu; i++) {
+ evsel = (struct perf_evsel *) leaders[i];
+ evsel->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;
+}
+
+void parse_events__set_leader(char *name, struct list_head *list,
+ struct parse_events_state *parse_state)
+{
+ struct perf_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;
+
+ __perf_evlist__set_leader(list);
+ leader = list_entry(list->next, struct perf_evsel, node);
+ leader->group_name = name ? strdup(name) : NULL;
+}
+
+/* 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;
+};
+
+static int get_event_modifier(struct event_modifier *mod, char *str,
+ struct perf_evsel *evsel)
+{
+ int eu = evsel ? evsel->attr.exclude_user : 0;
+ int ek = evsel ? evsel->attr.exclude_kernel : 0;
+ int eh = evsel ? evsel->attr.exclude_hv : 0;
+ int eH = evsel ? evsel->attr.exclude_host : 0;
+ int eG = evsel ? evsel->attr.exclude_guest : 0;
+ int eI = evsel ? evsel->attr.exclude_idle : 0;
+ int precise = evsel ? evsel->attr.precise_ip : 0;
+ int precise_max = 0;
+ int sample_read = 0;
+ int pinned = evsel ? evsel->attr.pinned : 0;
+
+ int exclude = eu | ek | eh;
+ int exclude_GH = evsel ? evsel->exclude_GH : 0;
+ int weak = 0;
+
+ memset(mod, 0, sizeof(*mod));
+
+ while (*str) {
+ if (*str == 'u') {
+ if (!exclude)
+ exclude = eu = ek = eh = 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 == 'W') {
+ weak = 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;
+
+ 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("ukhGHpppPSDIW") - 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 perf_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->attr.exclude_user = mod.eu;
+ evsel->attr.exclude_kernel = mod.ek;
+ evsel->attr.exclude_hv = mod.eh;
+ evsel->attr.precise_ip = mod.precise;
+ evsel->attr.exclude_host = mod.eH;
+ evsel->attr.exclude_guest = mod.eG;
+ evsel->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;
+
+ if (perf_evsel__is_group_leader(evsel))
+ evsel->attr.pinned = mod.pinned;
+ }
+
+ return 0;
+}
+
+int parse_events_name(struct list_head *list, char *name)
+{
+ struct perf_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) {
+ if (strchr(alias->name, '-'))
+ 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, '-');
+
+ if (tmp != NULL) {
+ 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();
+}
+
+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, void *parse_state, int start_token)
+{
+ YY_BUFFER_STATE buffer;
+ void *scanner;
+ int ret;
+
+ ret = parse_events_lex_init_extra(start_token, &scanner);
+ if (ret)
+ return ret;
+
+ buffer = parse_events__scan_string(str, scanner);
+
+#ifdef PARSER_DEBUG
+ parse_events_debug = 1;
+#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,
+ };
+ int ret;
+
+ ret = parse_events__scanner(str, &parse_state, PE_START_TERMS);
+ if (!ret) {
+ list_splice(parse_state.terms, terms);
+ zfree(&parse_state.terms);
+ return 0;
+ }
+
+ parse_events_terms__delete(parse_state.terms);
+ return ret;
+}
+
+int parse_events(struct perf_evlist *evlist, const char *str,
+ struct parse_events_error *err)
+{
+ struct parse_events_state parse_state = {
+ .list = LIST_HEAD_INIT(parse_state.list),
+ .idx = evlist->nr_entries,
+ .error = err,
+ .evlist = evlist,
+ };
+ int ret;
+
+ ret = parse_events__scanner(str, &parse_state, PE_START_EVENTS);
+ perf_pmu__parse_cleanup();
+ if (!ret) {
+ struct perf_evsel *last;
+
+ if (list_empty(&parse_state.list)) {
+ WARN_ONCE(true, "WARNING: event parser found nothing\n");
+ return -1;
+ }
+
+ perf_evlist__splice_list_tail(evlist, &parse_state.list);
+ evlist->nr_groups += parse_state.nr_groups;
+ last = perf_evlist__last(evlist);
+ last->cmdline_group_boundary = true;
+
+ return 0;
+ }
+
+ /*
+ * There are 2 users - builtin-record and builtin-test objects.
+ * Both call perf_evlist__delete in case of error, so we dont
+ * need to bother.
+ */
+ return ret;
+}
+
+#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;
+}
+
+void parse_events_print_error(struct parse_events_error *err,
+ 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);
+ zfree(&err->str);
+ zfree(&err->help);
+ }
+}
+
+#undef MAX_WIDTH
+
+int parse_events_option(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+ struct parse_events_error err = { .idx = 0, };
+ int ret = parse_events(evlist, str, &err);
+
+ if (ret) {
+ parse_events_print_error(&err, str);
+ fprintf(stderr, "Run 'perf list' for a list of valid events\n");
+ }
+
+ return ret;
+}
+
+static int
+foreach_evsel_in_last_glob(struct perf_evlist *evlist,
+ int (*func)(struct perf_evsel *evsel,
+ const void *arg),
+ const void *arg)
+{
+ struct perf_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->nr_entries > 0)
+ last = perf_evlist__last(evlist);
+
+ do {
+ err = (*func)(last, arg);
+ if (err)
+ return -1;
+ if (!last)
+ return 0;
+
+ if (last->node.prev == &evlist->entries)
+ return 0;
+ last = list_entry(last->node.prev, struct perf_evsel, node);
+ } while (!last->cmdline_group_boundary);
+
+ return 0;
+}
+
+static int set_filter(struct perf_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->attr.type == PERF_TYPE_TRACEPOINT) {
+ if (perf_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->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 (perf_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 perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+
+ return foreach_evsel_in_last_glob(evlist, set_filter,
+ (const void *)str);
+}
+
+static int add_exclude_perf_filter(struct perf_evsel *evsel,
+ const void *arg __maybe_unused)
+{
+ char new_filter[64];
+
+ if (evsel == NULL || evsel->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 (perf_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 perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+
+ return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
+ NULL);
+}
+
+static const char * const event_type_descriptors[] = {
+ "Hardware event",
+ "Software event",
+ "Tracepoint event",
+ "Hardware cache event",
+ "Raw hardware event descriptor",
+ "Hardware breakpoint",
+};
+
+static int cmp_string(const void *a, const void *b)
+{
+ const char * const *as = a;
+ const char * const *bs = b;
+
+ return strcmp(*as, *bs);
+}
+
+/*
+ * Print the events from <debugfs_mount_point>/tracing/events
+ */
+
+void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
+ bool name_only)
+{
+ DIR *sys_dir, *evt_dir;
+ struct dirent *sys_dirent, *evt_dirent;
+ char evt_path[MAXPATHLEN];
+ char *dir_path;
+ char **evt_list = NULL;
+ unsigned int evt_i = 0, evt_num = 0;
+ bool evt_num_known = false;
+
+restart:
+ sys_dir = tracing_events__opendir();
+ if (!sys_dir)
+ return;
+
+ if (evt_num_known) {
+ evt_list = zalloc(sizeof(char *) * evt_num);
+ if (!evt_list)
+ goto out_close_sys_dir;
+ }
+
+ for_each_subsystem(sys_dir, sys_dirent) {
+ if (subsys_glob != NULL &&
+ !strglobmatch(sys_dirent->d_name, subsys_glob))
+ continue;
+
+ dir_path = get_events_file(sys_dirent->d_name);
+ if (!dir_path)
+ continue;
+ evt_dir = opendir(dir_path);
+ if (!evt_dir)
+ goto next;
+
+ for_each_event(dir_path, evt_dir, evt_dirent) {
+ if (event_glob != NULL &&
+ !strglobmatch(evt_dirent->d_name, event_glob))
+ continue;
+
+ if (!evt_num_known) {
+ evt_num++;
+ continue;
+ }
+
+ snprintf(evt_path, MAXPATHLEN, "%s:%s",
+ sys_dirent->d_name, evt_dirent->d_name);
+
+ evt_list[evt_i] = strdup(evt_path);
+ if (evt_list[evt_i] == NULL) {
+ put_events_file(dir_path);
+ goto out_close_evt_dir;
+ }
+ evt_i++;
+ }
+ closedir(evt_dir);
+next:
+ put_events_file(dir_path);
+ }
+ closedir(sys_dir);
+
+ if (!evt_num_known) {
+ evt_num_known = true;
+ goto restart;
+ }
+ qsort(evt_list, evt_num, sizeof(char *), cmp_string);
+ evt_i = 0;
+ while (evt_i < evt_num) {
+ if (name_only) {
+ printf("%s ", evt_list[evt_i++]);
+ continue;
+ }
+ printf(" %-50s [%s]\n", evt_list[evt_i++],
+ event_type_descriptors[PERF_TYPE_TRACEPOINT]);
+ }
+ if (evt_num && pager_in_use())
+ printf("\n");
+
+out_free:
+ evt_num = evt_i;
+ for (evt_i = 0; evt_i < evt_num; evt_i++)
+ zfree(&evt_list[evt_i]);
+ zfree(&evt_list);
+ return;
+
+out_close_evt_dir:
+ closedir(evt_dir);
+out_close_sys_dir:
+ closedir(sys_dir);
+
+ printf("FATAL: not enough memory to print %s\n",
+ event_type_descriptors[PERF_TYPE_TRACEPOINT]);
+ if (evt_list)
+ goto out_free;
+}
+
+/*
+ * Check whether event is in <debugfs_mount_point>/tracing/events
+ */
+
+int is_valid_tracepoint(const char *event_string)
+{
+ DIR *sys_dir, *evt_dir;
+ struct dirent *sys_dirent, *evt_dirent;
+ char evt_path[MAXPATHLEN];
+ char *dir_path;
+
+ sys_dir = tracing_events__opendir();
+ if (!sys_dir)
+ return 0;
+
+ for_each_subsystem(sys_dir, sys_dirent) {
+ dir_path = get_events_file(sys_dirent->d_name);
+ if (!dir_path)
+ continue;
+ evt_dir = opendir(dir_path);
+ if (!evt_dir)
+ goto next;
+
+ for_each_event(dir_path, evt_dir, evt_dirent) {
+ snprintf(evt_path, MAXPATHLEN, "%s:%s",
+ sys_dirent->d_name, evt_dirent->d_name);
+ if (!strcmp(evt_path, event_string)) {
+ closedir(evt_dir);
+ closedir(sys_dir);
+ return 1;
+ }
+ }
+ closedir(evt_dir);
+next:
+ put_events_file(dir_path);
+ }
+ closedir(sys_dir);
+ return 0;
+}
+
+static bool is_event_supported(u8 type, unsigned config)
+{
+ bool ret = true;
+ int open_return;
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr = {
+ .type = type,
+ .config = config,
+ .disabled = 1,
+ };
+ struct thread_map *tmap = thread_map__new_by_tid(0);
+
+ if (tmap == NULL)
+ return false;
+
+ evsel = perf_evsel__new(&attr);
+ if (evsel) {
+ open_return = perf_evsel__open(evsel, NULL, tmap);
+ ret = open_return >= 0;
+
+ if (open_return == -EACCES) {
+ /*
+ * This happens if the paranoid value
+ * /proc/sys/kernel/perf_event_paranoid is set to 2
+ * Re-run with exclude_kernel set; we don't do that
+ * by default as some ARM machines do not support it.
+ *
+ */
+ evsel->attr.exclude_kernel = 1;
+ ret = perf_evsel__open(evsel, NULL, tmap) >= 0;
+ }
+ perf_evsel__delete(evsel);
+ }
+
+ return ret;
+}
+
+void print_sdt_events(const char *subsys_glob, const char *event_glob,
+ bool name_only)
+{
+ struct probe_cache *pcache;
+ struct probe_cache_entry *ent;
+ struct strlist *bidlist, *sdtlist;
+ struct strlist_config cfg = {.dont_dupstr = true};
+ struct str_node *nd, *nd2;
+ char *buf, *path, *ptr = NULL;
+ bool show_detail = false;
+ int ret;
+
+ sdtlist = strlist__new(NULL, &cfg);
+ if (!sdtlist) {
+ pr_debug("Failed to allocate new strlist for SDT\n");
+ return;
+ }
+ bidlist = build_id_cache__list_all(true);
+ if (!bidlist) {
+ pr_debug("Failed to get buildids: %d\n", errno);
+ return;
+ }
+ strlist__for_each_entry(nd, bidlist) {
+ pcache = probe_cache__new(nd->s, NULL);
+ if (!pcache)
+ continue;
+ list_for_each_entry(ent, &pcache->entries, node) {
+ if (!ent->sdt)
+ continue;
+ if (subsys_glob &&
+ !strglobmatch(ent->pev.group, subsys_glob))
+ continue;
+ if (event_glob &&
+ !strglobmatch(ent->pev.event, event_glob))
+ continue;
+ ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
+ ent->pev.event, nd->s);
+ if (ret > 0)
+ strlist__add(sdtlist, buf);
+ }
+ probe_cache__delete(pcache);
+ }
+ strlist__delete(bidlist);
+
+ strlist__for_each_entry(nd, sdtlist) {
+ buf = strchr(nd->s, '@');
+ if (buf)
+ *(buf++) = '\0';
+ if (name_only) {
+ printf("%s ", nd->s);
+ continue;
+ }
+ nd2 = strlist__next(nd);
+ if (nd2) {
+ ptr = strchr(nd2->s, '@');
+ if (ptr)
+ *ptr = '\0';
+ if (strcmp(nd->s, nd2->s) == 0)
+ show_detail = true;
+ }
+ if (show_detail) {
+ path = build_id_cache__origname(buf);
+ ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
+ if (ret > 0) {
+ printf(" %-50s [%s]\n", buf, "SDT event");
+ free(buf);
+ }
+ } else
+ printf(" %-50s [%s]\n", nd->s, "SDT event");
+ if (nd2) {
+ if (strcmp(nd->s, nd2->s) != 0)
+ show_detail = false;
+ if (ptr)
+ *ptr = '@';
+ }
+ }
+ strlist__delete(sdtlist);
+}
+
+int print_hwcache_events(const char *event_glob, bool name_only)
+{
+ unsigned int type, op, i, evt_i = 0, evt_num = 0;
+ char name[64];
+ char **evt_list = NULL;
+ bool evt_num_known = false;
+
+restart:
+ if (evt_num_known) {
+ evt_list = zalloc(sizeof(char *) * evt_num);
+ if (!evt_list)
+ goto out_enomem;
+ }
+
+ for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
+ for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
+ /* skip invalid cache type */
+ if (!perf_evsel__is_cache_op_valid(type, op))
+ continue;
+
+ for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
+ __perf_evsel__hw_cache_type_op_res_name(type, op, i,
+ name, sizeof(name));
+ if (event_glob != NULL && !strglobmatch(name, event_glob))
+ continue;
+
+ if (!is_event_supported(PERF_TYPE_HW_CACHE,
+ type | (op << 8) | (i << 16)))
+ continue;
+
+ if (!evt_num_known) {
+ evt_num++;
+ continue;
+ }
+
+ evt_list[evt_i] = strdup(name);
+ if (evt_list[evt_i] == NULL)
+ goto out_enomem;
+ evt_i++;
+ }
+ }
+ }
+
+ if (!evt_num_known) {
+ evt_num_known = true;
+ goto restart;
+ }
+ qsort(evt_list, evt_num, sizeof(char *), cmp_string);
+ evt_i = 0;
+ while (evt_i < evt_num) {
+ if (name_only) {
+ printf("%s ", evt_list[evt_i++]);
+ continue;
+ }
+ printf(" %-50s [%s]\n", evt_list[evt_i++],
+ event_type_descriptors[PERF_TYPE_HW_CACHE]);
+ }
+ if (evt_num && pager_in_use())
+ printf("\n");
+
+out_free:
+ evt_num = evt_i;
+ for (evt_i = 0; evt_i < evt_num; evt_i++)
+ zfree(&evt_list[evt_i]);
+ zfree(&evt_list);
+ return evt_num;
+
+out_enomem:
+ printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
+ if (evt_list)
+ goto out_free;
+ return evt_num;
+}
+
+void print_symbol_events(const char *event_glob, unsigned type,
+ struct event_symbol *syms, unsigned max,
+ bool name_only)
+{
+ unsigned int i, evt_i = 0, evt_num = 0;
+ char name[MAX_NAME_LEN];
+ char **evt_list = NULL;
+ bool evt_num_known = false;
+
+restart:
+ if (evt_num_known) {
+ evt_list = zalloc(sizeof(char *) * evt_num);
+ if (!evt_list)
+ goto out_enomem;
+ syms -= max;
+ }
+
+ for (i = 0; i < max; i++, syms++) {
+
+ if (event_glob != NULL && syms->symbol != NULL &&
+ !(strglobmatch(syms->symbol, event_glob) ||
+ (syms->alias && strglobmatch(syms->alias, event_glob))))
+ continue;
+
+ if (!is_event_supported(type, i))
+ continue;
+
+ if (!evt_num_known) {
+ evt_num++;
+ continue;
+ }
+
+ if (!name_only && strlen(syms->alias))
+ snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
+ else
+ strncpy(name, syms->symbol, MAX_NAME_LEN);
+
+ evt_list[evt_i] = strdup(name);
+ if (evt_list[evt_i] == NULL)
+ goto out_enomem;
+ evt_i++;
+ }
+
+ if (!evt_num_known) {
+ evt_num_known = true;
+ goto restart;
+ }
+ qsort(evt_list, evt_num, sizeof(char *), cmp_string);
+ evt_i = 0;
+ while (evt_i < evt_num) {
+ if (name_only) {
+ printf("%s ", evt_list[evt_i++]);
+ continue;
+ }
+ printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
+ }
+ if (evt_num && pager_in_use())
+ printf("\n");
+
+out_free:
+ evt_num = evt_i;
+ for (evt_i = 0; evt_i < evt_num; evt_i++)
+ zfree(&evt_list[evt_i]);
+ zfree(&evt_list);
+ return;
+
+out_enomem:
+ printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
+ if (evt_list)
+ goto out_free;
+}
+
+/*
+ * Print the help text for the event symbols:
+ */
+void print_events(const char *event_glob, bool name_only, bool quiet_flag,
+ bool long_desc, bool details_flag)
+{
+ print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
+ event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
+
+ print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
+ event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
+
+ print_hwcache_events(event_glob, name_only);
+
+ print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
+ details_flag);
+
+ if (event_glob != NULL)
+ return;
+
+ if (!name_only) {
+ printf(" %-50s [%s]\n",
+ "rNNN",
+ event_type_descriptors[PERF_TYPE_RAW]);
+ printf(" %-50s [%s]\n",
+ "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
+ event_type_descriptors[PERF_TYPE_RAW]);
+ if (pager_in_use())
+ printf(" (see 'man perf-list' on how to encode it)\n\n");
+
+ printf(" %-50s [%s]\n",
+ "mem:<addr>[/len][:access]",
+ event_type_descriptors[PERF_TYPE_BREAKPOINT]);
+ if (pager_in_use())
+ printf("\n");
+ }
+
+ print_tracepoint_events(NULL, NULL, name_only);
+
+ print_sdt_events(NULL, NULL, name_only);
+
+ metricgroup__print(true, true, NULL, name_only);
+}
+
+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,
+ .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;
+ struct parse_events_term temp = {
+ .type_val = PARSE_EVENTS__TERM_TYPE_STR,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ .config = config ?: (char *) "event",
+ };
+
+ BUG_ON(idx >= PERF_COUNT_HW_MAX);
+ sym = &event_symbols_hw[idx];
+
+ return new_term(term, &temp, (char *) sym->symbol, 0);
+}
+
+int parse_events_term__clone(struct parse_events_term **new,
+ struct parse_events_term *term)
+{
+ struct parse_events_term temp = {
+ .type_val = term->type_val,
+ .type_term = term->type_term,
+ .config = term->config,
+ .err_term = term->err_term,
+ .err_val = term->err_val,
+ };
+
+ return new_term(new, &temp, term->val.str, term->val.num);
+}
+
+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) {
+ if (term->array.nr_ranges)
+ zfree(&term->array.ranges);
+ list_del_init(&term->list);
+ free(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)
+{
+ struct parse_events_error *err = parse_state->error;
+
+ if (!err)
+ return;
+ err->idx = idx;
+ err->str = strdup(str);
+ WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
+}
+
+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;
+}