From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook --- tools/perf/util/parse-events.c | 2959 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2959 insertions(+) create mode 100644 tools/perf/util/parse-events.c (limited to 'tools/perf/util/parse-events.c') diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c new file mode 100644 index 000000000..cc7ad331a --- /dev/null +++ b/tools/perf/util/parse-events.c @@ -0,0 +1,2959 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include +#include +#include +#include +#include "cpumap.h" +#include "term.h" +#include "env.h" +#include "evlist.h" +#include "evsel.h" +#include +#include "parse-events.h" +#include "string2.h" +#include "strbuf.h" +#include "debug.h" +#include +#include +#include +#include "pmu.h" +#include "pmus.h" +#include "tp_pmu.h" +#include "asm/bug.h" +#include "ui/ui.h" +#include "util/parse-branch-options.h" +#include "util/evsel_config.h" +#include "util/event.h" +#include "util/bpf-filter.h" +#include "util/stat.h" +#include "util/util.h" +#include "tracepoint.h" +#include + +#define MAX_NAME_LEN 100 + +static int get_config_terms(const struct parse_events_terms *head_config, + struct list_head *head_terms); +static int parse_events_terms__copy(const struct parse_events_terms *src, + struct parse_events_terms *dest); +static int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb); + +static const char *const event_types[] = { + [PERF_TYPE_HARDWARE] = "hardware", + [PERF_TYPE_SOFTWARE] = "software", + [PERF_TYPE_TRACEPOINT] = "tracepoint", + [PERF_TYPE_HW_CACHE] = "hardware-cache", + [PERF_TYPE_RAW] = "raw", + [PERF_TYPE_BREAKPOINT] = "breakpoint", +}; + +const char *event_type(size_t type) +{ + if (type >= PERF_TYPE_MAX) + return "unknown"; + + return event_types[type]; +} + +static char *get_config_str(const struct parse_events_terms *head_terms, + enum parse_events__term_type type_term) +{ + struct parse_events_term *term; + + if (!head_terms) + return NULL; + + list_for_each_entry(term, &head_terms->terms, list) + if (term->type_term == type_term) + return term->val.str; + + return NULL; +} + +static char *get_config_metric_id(const struct parse_events_terms *head_terms) +{ + return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); +} + +static char *get_config_name(const struct parse_events_terms *head_terms) +{ + return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); +} + +static struct perf_cpu_map *get_config_cpu(const struct parse_events_terms *head_terms, + bool fake_pmu) +{ + struct parse_events_term *term; + struct perf_cpu_map *cpus = NULL; + + if (!head_terms) + return NULL; + + list_for_each_entry(term, &head_terms->terms, list) { + struct perf_cpu_map *term_cpus; + + if (term->type_term != PARSE_EVENTS__TERM_TYPE_CPU) + continue; + + if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { + term_cpus = perf_cpu_map__new_int(term->val.num); + } else { + struct perf_pmu *pmu = perf_pmus__find(term->val.str); + + if (pmu) { + term_cpus = pmu->is_core && perf_cpu_map__is_empty(pmu->cpus) + ? cpu_map__online() + : perf_cpu_map__get(pmu->cpus); + } else { + term_cpus = perf_cpu_map__new(term->val.str); + if (!term_cpus && fake_pmu) { + /* + * Assume the PMU string makes sense on a different + * machine and fake a value with all online CPUs. + */ + term_cpus = cpu_map__online(); + } + } + } + perf_cpu_map__merge(&cpus, term_cpus); + perf_cpu_map__put(term_cpus); + } + + return cpus; +} + +/** + * fix_raw - For each raw term see if there is an event (aka alias) in pmu that + * matches the raw's string value. If the string value matches an + * event then change the term to be an event, if not then change it to + * be a config term. For example, "read" may be an event of the PMU or + * a raw hex encoding of 0xead. The fix-up is done late so the PMU of + * the event can be determined and we don't need to scan all PMUs + * ahead-of-time. + * @config_terms: the list of terms that may contain a raw term. + * @pmu: the PMU to scan for events from. + */ +static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu) +{ + struct parse_events_term *term; + + list_for_each_entry(term, &config_terms->terms, list) { + u64 num; + + if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW) + continue; + + if (perf_pmu__have_event(pmu, term->val.str)) { + zfree(&term->config); + term->config = term->val.str; + term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; + term->type_term = PARSE_EVENTS__TERM_TYPE_USER; + term->val.num = 1; + term->no_value = true; + continue; + } + + zfree(&term->config); + term->config = strdup("config"); + errno = 0; + num = strtoull(term->val.str + 1, NULL, 16); + assert(errno == 0); + free(term->val.str); + term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; + term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG; + term->val.num = num; + term->no_value = false; + } +} + +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, struct evsel *first_wildcard_match, + struct perf_cpu_map *user_cpus, u64 alternate_hw_config) +{ + struct evsel *evsel; + bool is_pmu_core; + struct perf_cpu_map *cpus, *pmu_cpus; + bool has_user_cpus = !perf_cpu_map__is_empty(user_cpus); + + /* + * Ensure the first_wildcard_match's PMU matches that of the new event + * being added. Otherwise try to match with another event further down + * the evlist. + */ + if (first_wildcard_match) { + struct evsel *pos = list_prev_entry(first_wildcard_match, core.node); + + first_wildcard_match = NULL; + list_for_each_entry_continue(pos, list, core.node) { + if (perf_pmu__name_no_suffix_match(pos->pmu, pmu->name)) { + first_wildcard_match = pos; + break; + } + if (pos->pmu->is_core && (!pmu || pmu->is_core)) { + first_wildcard_match = pos; + break; + } + } + } + + if (pmu) { + perf_pmu__warn_invalid_formats(pmu); + if (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX) { + perf_pmu__warn_invalid_config(pmu, attr->config, name, + PERF_PMU_FORMAT_VALUE_CONFIG, "config"); + perf_pmu__warn_invalid_config(pmu, attr->config1, name, + PERF_PMU_FORMAT_VALUE_CONFIG1, "config1"); + perf_pmu__warn_invalid_config(pmu, attr->config2, name, + PERF_PMU_FORMAT_VALUE_CONFIG2, "config2"); + perf_pmu__warn_invalid_config(pmu, attr->config3, name, + PERF_PMU_FORMAT_VALUE_CONFIG3, "config3"); + perf_pmu__warn_invalid_config(pmu, attr->config4, name, + PERF_PMU_FORMAT_VALUE_CONFIG4, "config4"); + } + } + /* + * If a PMU wasn't given, such as for legacy events, find now that + * warnings won't be generated. + */ + if (!pmu) + pmu = perf_pmus__find_by_attr(attr); + + if (pmu) { + is_pmu_core = pmu->is_core; + pmu_cpus = perf_cpu_map__get(pmu->cpus); + if (perf_cpu_map__is_empty(pmu_cpus)) + pmu_cpus = cpu_map__online(); + } else { + is_pmu_core = (attr->type == PERF_TYPE_HARDWARE || + attr->type == PERF_TYPE_HW_CACHE); + pmu_cpus = is_pmu_core ? cpu_map__online() : NULL; + } + + if (has_user_cpus) + cpus = perf_cpu_map__get(user_cpus); + else + cpus = perf_cpu_map__get(pmu_cpus); + + if (init_attr) + event_attr_init(attr); + + evsel = evsel__new_idx(attr, *idx); + if (!evsel) { + perf_cpu_map__put(cpus); + perf_cpu_map__put(pmu_cpus); + return NULL; + } + + if (name) { + evsel->name = strdup(name); + if (!evsel->name) + goto out_err; + } + + if (metric_id) { + evsel->metric_id = strdup(metric_id); + if (!evsel->metric_id) + goto out_err; + } + + (*idx)++; + evsel->core.cpus = cpus; + evsel->core.pmu_cpus = pmu_cpus; + evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; + evsel->core.is_pmu_core = is_pmu_core; + evsel->core.reads_only_on_cpu_idx0 = perf_pmu__reads_only_on_cpu_idx0(attr); + evsel->pmu = pmu; + evsel->alternate_hw_config = alternate_hw_config; + evsel->first_wildcard_match = first_wildcard_match; + + if (config_terms) + list_splice_init(config_terms, &evsel->config_terms); + + if (list) + list_add_tail(&evsel->core.node, list); + + if (has_user_cpus) + evsel__warn_user_requested_cpus(evsel, user_cpus); + + return evsel; +out_err: + perf_cpu_map__put(cpus); + perf_cpu_map__put(pmu_cpus); + zfree(&evsel->name); + zfree(&evsel->metric_id); + free(evsel); + return NULL; +} + +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, + /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, + /*alternate_hw_config=*/PERF_COUNT_HW_MAX); +} + +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, + u64 alternate_hw_config) +{ + return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, + /*pmu=*/NULL, config_terms, + /*first_wildcard_match=*/NULL, /*cpu_list=*/NULL, + alternate_hw_config) ? 0 : -ENOMEM; +} + +/** + * parse_aliases - search names for entries beginning or equalling str ignoring + * case. If mutliple entries in names match str then the longest + * is chosen. + * @str: The needle to look for. + * @names: The haystack to search. + * @size: The size of the haystack. + * @longest: Out argument giving the length of the matching entry. + */ +static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size, + int *longest) +{ + *longest = -1; + for (int i = 0; i < size; i++) { + for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { + int 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_state *parse_state); +static int config_term_common(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_state *parse_state); +static int config_attr(struct perf_event_attr *attr, + const struct parse_events_terms *head, + struct parse_events_state *parse_state, + config_term_func_t config_term); + +/** + * parse_events__decode_legacy_cache - Search name for the legacy cache event + * name composed of 1, 2 or 3 hyphen + * separated sections. The first section is + * the cache type while the others are the + * optional op and optional result. To make + * life hard the names in the table also + * contain hyphens and the longest name + * should always be selected. + */ +int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config) +{ + int len, cache_type = -1, cache_op = -1, cache_result = -1; + const char *name_end = &name[strlen(name) + 1]; + const char *str = name; + + cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len); + if (cache_type == -1) + return -EINVAL; + str += len + 1; + + if (str < name_end) { + cache_op = parse_aliases(str, evsel__hw_cache_op, + PERF_COUNT_HW_CACHE_OP_MAX, &len); + if (cache_op >= 0) { + if (!evsel__is_cache_op_valid(cache_type, cache_op)) + return -EINVAL; + str += len + 1; + } else { + cache_result = parse_aliases(str, evsel__hw_cache_result, + PERF_COUNT_HW_CACHE_RESULT_MAX, &len); + if (cache_result >= 0) + str += len + 1; + } + } + if (str < name_end) { + if (cache_op < 0) { + cache_op = parse_aliases(str, evsel__hw_cache_op, + PERF_COUNT_HW_CACHE_OP_MAX, &len); + if (cache_op >= 0) { + if (!evsel__is_cache_op_valid(cache_type, cache_op)) + return -EINVAL; + } + } else if (cache_result < 0) { + cache_result = parse_aliases(str, evsel__hw_cache_result, + PERF_COUNT_HW_CACHE_RESULT_MAX, &len); + } + } + + /* + * 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; + + *config = cache_type | (cache_op << 8) | (cache_result << 16); + if (perf_pmus__supports_extended_type()) + *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT; + return 0; +} + +/** + * parse_events__filter_pmu - returns false if a wildcard PMU should be + * considered, true if it should be filtered. + */ +bool parse_events__filter_pmu(const struct parse_events_state *parse_state, + const struct perf_pmu *pmu) +{ + if (parse_state->pmu_filter == NULL) + return false; + + if (parse_state->cputype_filter && !pmu->is_core) + return false; + + return perf_pmu__wildcard_match(pmu, parse_state->pmu_filter) == 0; +} + +static int parse_events_add_pmu(struct parse_events_state *parse_state, + struct list_head *list, struct perf_pmu *pmu, + const struct parse_events_terms *const_parsed_terms, + struct evsel *first_wildcard_match); + +static void tracepoint_error(struct parse_events_error *e, int err, + const char *sys, const char *name, int column) +{ + 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, column, strdup(str), strdup(help)); +} + +static int add_tracepoint(struct parse_events_state *parse_state, + struct list_head *list, + const char *sys_name, const char *evt_name, + struct parse_events_error *err, + struct parse_events_terms *head_config, void *loc_) +{ + YYLTYPE *loc = loc_; + struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++, + !parse_state->fake_tp); + + if (IS_ERR(evsel)) { + tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); + 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; +} + +struct add_tracepoint_multi_args { + struct parse_events_state *parse_state; + struct list_head *list; + const char *sys_glob; + const char *evt_glob; + struct parse_events_error *err; + struct parse_events_terms *head_config; + YYLTYPE *loc; + int found; +}; + +static int add_tracepoint_multi_event_cb(void *state, const char *sys_name, const char *evt_name) +{ + struct add_tracepoint_multi_args *args = state; + int ret; + + if (!strglobmatch(evt_name, args->evt_glob)) + return 0; + + args->found++; + ret = add_tracepoint(args->parse_state, args->list, sys_name, evt_name, + args->err, args->head_config, args->loc); + + return ret; +} + +static int add_tracepoint_multi_event(struct add_tracepoint_multi_args *args, const char *sys_name) +{ + if (strpbrk(args->evt_glob, "*?") == NULL) { + /* Not a glob. */ + args->found++; + return add_tracepoint(args->parse_state, args->list, sys_name, args->evt_glob, + args->err, args->head_config, args->loc); + } + + return tp_pmu__for_each_tp_event(sys_name, args, add_tracepoint_multi_event_cb); +} + +static int add_tracepoint_multi_sys_cb(void *state, const char *sys_name) +{ + struct add_tracepoint_multi_args *args = state; + + if (!strglobmatch(sys_name, args->sys_glob)) + return 0; + + return add_tracepoint_multi_event(args, sys_name); +} + +static int add_tracepoint_multi_sys(struct parse_events_state *parse_state, + struct list_head *list, + const char *sys_glob, const char *evt_glob, + struct parse_events_error *err, + struct parse_events_terms *head_config, YYLTYPE *loc) +{ + struct add_tracepoint_multi_args args = { + .parse_state = parse_state, + .list = list, + .sys_glob = sys_glob, + .evt_glob = evt_glob, + .err = err, + .head_config = head_config, + .loc = loc, + .found = 0, + }; + int ret; + + if (strpbrk(sys_glob, "*?") == NULL) { + /* Not a glob. */ + ret = add_tracepoint_multi_event(&args, sys_glob); + } else { + ret = tp_pmu__for_each_tp_sys(&args, add_tracepoint_multi_sys_cb); + } + if (args.found == 0) { + tracepoint_error(err, ENOENT, sys_glob, evt_glob, loc->first_column); + return -ENOENT; + } + return ret; +} + +size_t default_breakpoint_len(void) +{ +#if defined(__i386__) + static int len; + + if (len == 0) { + struct perf_env env = {}; + + perf_env__init(&env); + len = perf_env__kernel_is_64_bit(&env) ? sizeof(u64) : sizeof(long); + perf_env__exit(&env); + } + return len; +#elif defined(__aarch64__) + return 4; +#else + return sizeof(long); +#endif +} + +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 parse_events_state *parse_state, + struct list_head *list, + u64 addr, char *type, u64 len, + struct parse_events_terms *head_config) +{ + struct perf_event_attr attr; + LIST_HEAD(config_terms); + const char *name; + + 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 = default_breakpoint_len(); + else + len = HW_BREAKPOINT_LEN_4; + } + + attr.bp_len = len; + + attr.type = PERF_TYPE_BREAKPOINT; + attr.sample_period = 1; + + if (head_config) { + if (config_attr(&attr, head_config, parse_state, config_term_common)) + return -EINVAL; + + if (get_config_terms(head_config, &config_terms)) + return -ENOMEM; + } + + name = get_config_name(head_config); + + return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, + &config_terms, /*alternate_hw_config=*/PERF_COUNT_HW_MAX); +} + +static int check_type_val(struct parse_events_term *term, + struct parse_events_error *err, + enum parse_events__term_val_type 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; +} + +static bool config_term_shrinked; + +const char *parse_events__term_type_str(enum parse_events__term_type term_type) +{ + /* + * Update according to parse-events.l + */ + static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { + [PARSE_EVENTS__TERM_TYPE_USER] = "", + [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", + [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", + [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", + [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3", + [PARSE_EVENTS__TERM_TYPE_CONFIG4] = "config4", + [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_ACTION] = "aux-action", + [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", + [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", + [PARSE_EVENTS__TERM_TYPE_RAW] = "raw", + [PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG] = "legacy-hardware-config", + [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG] = "legacy-cache-config", + [PARSE_EVENTS__TERM_TYPE_CPU] = "cpu", + [PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV] = "ratio-to-prev", + }; + if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR) + return "unknown term"; + + return config_term_names[term_type]; +} + +static bool +config_term_avail(enum parse_events__term_type 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_CONFIG3: + case PARSE_EVENTS__TERM_TYPE_CONFIG4: + 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: + case PARSE_EVENTS__TERM_TYPE_CPU: + return true; + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + case PARSE_EVENTS__TERM_TYPE_TIME: + case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: + case PARSE_EVENTS__TERM_TYPE_STACKSIZE: + case PARSE_EVENTS__TERM_TYPE_NOINHERIT: + case PARSE_EVENTS__TERM_TYPE_INHERIT: + case PARSE_EVENTS__TERM_TYPE_MAX_STACK: + case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: + case PARSE_EVENTS__TERM_TYPE_OVERWRITE: + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: + case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + case PARSE_EVENTS__TERM_TYPE_RAW: + case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: + case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: + default: + if (!err) + return false; + + /* term_type is validated so indexing is safe */ + if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", + parse_events__term_type_str(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_state *parse_state) +{ +#define CHECK_TYPE_VAL(type) \ +do { \ + if (check_type_val(term, parse_state->error, 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_CONFIG3: + CHECK_TYPE_VAL(NUM); + attr->config3 = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG4: + CHECK_TYPE_VAL(NUM); + attr->config4 = 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(parse_state->error, 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(parse_state->error, 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_RAW: + 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(parse_state->error, 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_ACTION: + CHECK_TYPE_VAL(STR); + break; + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + CHECK_TYPE_VAL(NUM); + if (term->val.num > UINT_MAX) { + parse_events_error__handle(parse_state->error, term->err_val, + strdup("too big"), + NULL); + return -EINVAL; + } + break; + case PARSE_EVENTS__TERM_TYPE_CPU: { + struct perf_cpu_map *map; + + if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { + if (term->val.num >= (u64)cpu__max_present_cpu().cpu) { + parse_events_error__handle(parse_state->error, term->err_val, + strdup("too big"), + /*help=*/NULL); + return -EINVAL; + } + break; + } + assert(term->type_val == PARSE_EVENTS__TERM_TYPE_STR); + if (perf_pmus__find(term->val.str) != NULL) + break; + + map = perf_cpu_map__new(term->val.str); + if (!map && !parse_state->fake_pmu) { + parse_events_error__handle(parse_state->error, term->err_val, + strdup("not a valid PMU or CPU number"), + /*help=*/NULL); + return -EINVAL; + } + perf_cpu_map__put(map); + break; + } + case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: + CHECK_TYPE_VAL(STR); + if (strtod(term->val.str, NULL) <= 0) { + parse_events_error__handle(parse_state->error, term->err_val, + strdup("zero or negative"), + NULL); + return -EINVAL; + } + if (errno == ERANGE) { + parse_events_error__handle(parse_state->error, term->err_val, + strdup("too big"), + NULL); + return -EINVAL; + } + break; + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: + default: + parse_events_error__handle(parse_state->error, term->err_term, + strdup(parse_events__term_type_str(term->type_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 "'' 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, parse_state->error)) + return -EINVAL; + return 0; +#undef CHECK_TYPE_VAL +} + +static bool check_pmu_is_core(__u32 type, const struct parse_events_term *term, + struct parse_events_error *err) +{ + struct perf_pmu *pmu = NULL; + + /* Avoid loading all PMUs with perf_pmus__find_by_type, just scan the core ones. */ + while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + if (pmu->type == type) + return true; + } + parse_events_error__handle(err, term->err_val, + strdup("needs a core PMU"), + NULL); + return false; +} + +static int config_term_pmu(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_state *parse_state) +{ + if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG) { + if (check_type_val(term, parse_state->error, PARSE_EVENTS__TERM_TYPE_NUM)) + return -EINVAL; + if (term->val.num >= PERF_COUNT_HW_MAX) { + parse_events_error__handle(parse_state->error, term->err_val, + strdup("too big"), + NULL); + return -EINVAL; + } + if (!check_pmu_is_core(attr->type, term, parse_state->error)) + return -EINVAL; + attr->config = term->val.num; + if (perf_pmus__supports_extended_type()) + attr->config |= (__u64)attr->type << PERF_PMU_TYPE_SHIFT; + attr->type = PERF_TYPE_HARDWARE; + return 0; + } + if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG) { + int cache_type, cache_op, cache_result; + + if (check_type_val(term, parse_state->error, PARSE_EVENTS__TERM_TYPE_NUM)) + return -EINVAL; + cache_type = term->val.num & 0xFF; + cache_op = (term->val.num >> 8) & 0xFF; + cache_result = (term->val.num >> 16) & 0xFF; + if ((term->val.num & ~0xFFFFFF) || + cache_type >= PERF_COUNT_HW_CACHE_MAX || + cache_op >= PERF_COUNT_HW_CACHE_OP_MAX || + cache_result >= PERF_COUNT_HW_CACHE_RESULT_MAX) { + parse_events_error__handle(parse_state->error, term->err_val, + strdup("too big"), + NULL); + return -EINVAL; + } + if (!check_pmu_is_core(attr->type, term, parse_state->error)) + return -EINVAL; + attr->config = term->val.num; + if (perf_pmus__supports_extended_type()) + attr->config |= (__u64)attr->type << PERF_PMU_TYPE_SHIFT; + attr->type = PERF_TYPE_HW_CACHE; + return 0; + } + 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; + } + return config_term_common(attr, term, parse_state); +} + +static int config_term_tracepoint(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_state *parse_state) +{ + 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_ACTION: + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + return config_term_common(attr, term, parse_state); + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + case PARSE_EVENTS__TERM_TYPE_CONFIG4: + case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_NAME: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + case PARSE_EVENTS__TERM_TYPE_TIME: + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + case PARSE_EVENTS__TERM_TYPE_PERCORE: + case PARSE_EVENTS__TERM_TYPE_METRIC_ID: + case PARSE_EVENTS__TERM_TYPE_RAW: + case PARSE_EVENTS__TERM_TYPE_CPU: + case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: + default: + parse_events_error__handle(parse_state->error, term->err_term, + strdup(parse_events__term_type_str(term->type_term)), + strdup("valid terms: call-graph,stack-size\n") + ); + return -EINVAL; + } + + return 0; +} + +static int config_attr(struct perf_event_attr *attr, + const struct parse_events_terms *head, + struct parse_events_state *parse_state, + config_term_func_t config_term) +{ + struct parse_events_term *term; + + list_for_each_entry(term, &head->terms, list) + if (config_term(attr, term, parse_state)) + return -EINVAL; + + return 0; +} + +static struct evsel_config_term *add_config_term(enum evsel_term_type type, + struct list_head *head_terms, + bool weak, char *str, u64 val) +{ + struct evsel_config_term *t; + + t = zalloc(sizeof(*t)); + if (!t) + return NULL; + + INIT_LIST_HEAD(&t->list); + t->type = type; + t->weak = weak; + + switch (type) { + case EVSEL__CONFIG_TERM_PERIOD: + case EVSEL__CONFIG_TERM_FREQ: + case EVSEL__CONFIG_TERM_STACK_USER: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG1: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG2: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG3: + case EVSEL__CONFIG_TERM_USR_CHG_CONFIG4: + t->val.val = val; + break; + case EVSEL__CONFIG_TERM_TIME: + t->val.time = val; + break; + case EVSEL__CONFIG_TERM_INHERIT: + t->val.inherit = val; + break; + case EVSEL__CONFIG_TERM_OVERWRITE: + t->val.overwrite = val; + break; + case EVSEL__CONFIG_TERM_MAX_STACK: + t->val.max_stack = val; + break; + case EVSEL__CONFIG_TERM_MAX_EVENTS: + t->val.max_events = val; + break; + case EVSEL__CONFIG_TERM_PERCORE: + t->val.percore = val; + break; + case EVSEL__CONFIG_TERM_AUX_OUTPUT: + t->val.aux_output = val; + break; + case EVSEL__CONFIG_TERM_AUX_SAMPLE_SIZE: + t->val.aux_sample_size = val; + break; + case EVSEL__CONFIG_TERM_CALLGRAPH: + case EVSEL__CONFIG_TERM_BRANCH: + case EVSEL__CONFIG_TERM_DRV_CFG: + case EVSEL__CONFIG_TERM_RATIO_TO_PREV: + case EVSEL__CONFIG_TERM_AUX_ACTION: + if (str) { + t->val.str = strdup(str); + if (!t->val.str) { + zfree(&t); + return NULL; + } + t->free_str = true; + } + break; + default: + t->val.val = val; + break; + } + + list_add_tail(&t->list, head_terms); + return t; +} + +static int get_config_terms(const struct parse_events_terms *head_config, + struct list_head *head_terms) +{ + struct parse_events_term *term; + + list_for_each_entry(term, &head_config->terms, list) { + struct evsel_config_term *new_term; + enum evsel_term_type new_type; + bool str_type = false; + u64 val = 0; + + switch (term->type_term) { + case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: + new_type = EVSEL__CONFIG_TERM_PERIOD; + val = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + new_type = EVSEL__CONFIG_TERM_FREQ; + val = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_TIME: + new_type = EVSEL__CONFIG_TERM_TIME; + val = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: + new_type = EVSEL__CONFIG_TERM_CALLGRAPH; + str_type = true; + break; + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + new_type = EVSEL__CONFIG_TERM_BRANCH; + str_type = true; + break; + case PARSE_EVENTS__TERM_TYPE_STACKSIZE: + new_type = EVSEL__CONFIG_TERM_STACK_USER; + val = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_INHERIT: + new_type = EVSEL__CONFIG_TERM_INHERIT; + val = term->val.num ? 1 : 0; + break; + case PARSE_EVENTS__TERM_TYPE_NOINHERIT: + new_type = EVSEL__CONFIG_TERM_INHERIT; + val = term->val.num ? 0 : 1; + break; + case PARSE_EVENTS__TERM_TYPE_MAX_STACK: + new_type = EVSEL__CONFIG_TERM_MAX_STACK; + val = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: + new_type = EVSEL__CONFIG_TERM_MAX_EVENTS; + val = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_OVERWRITE: + new_type = EVSEL__CONFIG_TERM_OVERWRITE; + val = term->val.num ? 1 : 0; + break; + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: + new_type = EVSEL__CONFIG_TERM_OVERWRITE; + val = term->val.num ? 0 : 1; + break; + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + new_type = EVSEL__CONFIG_TERM_DRV_CFG; + str_type = true; + break; + case PARSE_EVENTS__TERM_TYPE_PERCORE: + new_type = EVSEL__CONFIG_TERM_PERCORE; + val = term->val.num ? true : false; + break; + case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: + new_type = EVSEL__CONFIG_TERM_AUX_OUTPUT; + val = term->val.num ? 1 : 0; + break; + case PARSE_EVENTS__TERM_TYPE_AUX_ACTION: + new_type = EVSEL__CONFIG_TERM_AUX_ACTION; + str_type = true; + break; + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + new_type = EVSEL__CONFIG_TERM_AUX_SAMPLE_SIZE; + val = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_RATIO_TO_PREV: + new_type = EVSEL__CONFIG_TERM_RATIO_TO_PREV; + str_type = true; + break; + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + case PARSE_EVENTS__TERM_TYPE_CONFIG4: + case PARSE_EVENTS__TERM_TYPE_LEGACY_HARDWARE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_NAME: + case PARSE_EVENTS__TERM_TYPE_METRIC_ID: + case PARSE_EVENTS__TERM_TYPE_RAW: + case PARSE_EVENTS__TERM_TYPE_CPU: + default: + /* Don't add a new term for these ones */ + continue; + } + + /* + * Note: Members evsel_config_term::val and + * parse_events_term::val are unions and endianness needs + * to be taken into account when changing such union members. + */ + new_term = add_config_term(new_type, head_terms, term->weak, + str_type ? term->val.str : NULL, val); + if (!new_term) + return -ENOMEM; + } + return 0; +} + +static int add_cfg_chg(const struct perf_pmu *pmu, + const struct parse_events_terms *head_config, + struct list_head *head_terms, + int format_type, + enum parse_events__term_type term_type, + enum evsel_term_type new_term_type) +{ + struct parse_events_term *term; + u64 bits = 0; + int type; + + list_for_each_entry(term, &head_config->terms, list) { + if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER) { + type = perf_pmu__format_type(pmu, term->config); + if (type != format_type) + continue; + bits |= perf_pmu__format_bits(pmu, term->config); + } else if (term->type_term == term_type) { + bits = ~(u64)0; + } + } + + if (bits) { + struct evsel_config_term *new_term; + + new_term = add_config_term(new_term_type, head_terms, false, NULL, bits); + if (!new_term) + return -ENOMEM; + } + + return 0; +} + +/* + * Add EVSEL__CONFIG_TERM_USR_CFG_CONFIGn where cfg_chg will have a bit set for + * each bit of attr->configN that the user has changed. + */ +static int get_config_chgs(const struct perf_pmu *pmu, + const struct parse_events_terms *head_config, + struct list_head *head_terms) +{ + int ret; + + ret = add_cfg_chg(pmu, head_config, head_terms, + PERF_PMU_FORMAT_VALUE_CONFIG, + PARSE_EVENTS__TERM_TYPE_CONFIG, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG); + if (ret) + return ret; + + ret = add_cfg_chg(pmu, head_config, head_terms, + PERF_PMU_FORMAT_VALUE_CONFIG1, + PARSE_EVENTS__TERM_TYPE_CONFIG1, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG1); + if (ret) + return ret; + + ret = add_cfg_chg(pmu, head_config, head_terms, + PERF_PMU_FORMAT_VALUE_CONFIG2, + PARSE_EVENTS__TERM_TYPE_CONFIG2, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG2); + if (ret) + return ret; + + ret = add_cfg_chg(pmu, head_config, head_terms, + PERF_PMU_FORMAT_VALUE_CONFIG3, + PARSE_EVENTS__TERM_TYPE_CONFIG3, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG3); + if (ret) + return ret; + + return add_cfg_chg(pmu, head_config, head_terms, + PERF_PMU_FORMAT_VALUE_CONFIG4, + PARSE_EVENTS__TERM_TYPE_CONFIG4, + EVSEL__CONFIG_TERM_USR_CHG_CONFIG4); +} + +int parse_events_add_tracepoint(struct parse_events_state *parse_state, + struct list_head *list, + const char *sys, const char *event, + struct parse_events_error *err, + struct parse_events_terms *head_config, void *loc_) +{ + YYLTYPE *loc = loc_; + + if (head_config) { + struct perf_event_attr attr; + + if (config_attr(&attr, head_config, parse_state, config_term_tracepoint)) + return -EINVAL; + } + + return add_tracepoint_multi_sys(parse_state, list, sys, event, + err, head_config, loc); +} + +static int __parse_events_add_numeric(struct parse_events_state *parse_state, + struct list_head *list, + struct perf_pmu *pmu, u32 type, u32 extended_type, + u64 config, const struct parse_events_terms *head_config, + struct evsel *first_wildcard_match) +{ + struct perf_event_attr attr; + LIST_HEAD(config_terms); + const char *name, *metric_id; + struct perf_cpu_map *cpus; + int ret; + + memset(&attr, 0, sizeof(attr)); + attr.type = type; + attr.config = config; + if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) { + assert(perf_pmus__supports_extended_type()); + attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT; + } + + if (head_config) { + if (config_attr(&attr, head_config, parse_state, 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); + cpus = get_config_cpu(head_config, parse_state->fake_pmu); + ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, + metric_id, pmu, &config_terms, first_wildcard_match, + cpus, /*alternate_hw_config=*/PERF_COUNT_HW_MAX) ? 0 : -ENOMEM; + perf_cpu_map__put(cpus); + free_config_terms(&config_terms); + return ret; +} + +int parse_events_add_numeric(struct parse_events_state *parse_state, + struct list_head *list, + u32 type, u64 config, + const struct parse_events_terms *head_config, + bool wildcard) +{ + struct perf_pmu *pmu = NULL; + bool found_supported = false; + + /* Wildcards on numeric values are only supported by core PMUs. */ + if (wildcard && perf_pmus__supports_extended_type()) { + struct evsel *first_wildcard_match = NULL; + while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + int ret; + + found_supported = true; + if (parse_events__filter_pmu(parse_state, pmu)) + continue; + + ret = __parse_events_add_numeric(parse_state, list, pmu, + type, pmu->type, + config, head_config, + first_wildcard_match); + if (ret) + return ret; + if (first_wildcard_match == NULL) + first_wildcard_match = + container_of(list->prev, struct evsel, core.node); + } + if (found_supported) + return 0; + } + return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type), + type, /*extended_type=*/0, config, head_config, + /*first_wildcard_match=*/NULL); +} + +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_add_pmu(struct parse_events_state *parse_state, + struct list_head *list, struct perf_pmu *pmu, + const struct parse_events_terms *const_parsed_terms, + struct evsel *first_wildcard_match) +{ + u64 alternate_hw_config = PERF_COUNT_HW_MAX; + struct perf_event_attr attr; + struct perf_pmu_info info; + struct evsel *evsel; + struct parse_events_error *err = parse_state->error; + LIST_HEAD(config_terms); + struct parse_events_terms parsed_terms; + bool alias_rewrote_terms = false; + struct perf_cpu_map *term_cpu = NULL; + + if (verbose > 1) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + if (pmu->selectable && const_parsed_terms && + list_empty(&const_parsed_terms->terms)) { + strbuf_addf(&sb, "%s//", pmu->name); + } else { + strbuf_addf(&sb, "%s/", pmu->name); + parse_events_terms__to_strbuf(const_parsed_terms, &sb); + strbuf_addch(&sb, '/'); + } + fprintf(stderr, "Attempt to add: %s\n", sb.buf); + strbuf_release(&sb); + } + + memset(&attr, 0, sizeof(attr)); + if (pmu->perf_event_attr_init_default) + pmu->perf_event_attr_init_default(pmu, &attr); + + attr.type = pmu->type; + + if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) { + evsel = __add_event(list, &parse_state->idx, &attr, + /*init_attr=*/true, /*name=*/NULL, + /*metric_id=*/NULL, pmu, + /*config_terms=*/NULL, first_wildcard_match, + /*cpu_list=*/NULL, alternate_hw_config); + return evsel ? 0 : -ENOMEM; + } + + parse_events_terms__init(&parsed_terms); + if (const_parsed_terms) { + int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); + + if (ret) + return ret; + } + fix_raw(&parsed_terms, pmu); + + /* Configure attr/terms with a known PMU, this will set hardcoded terms. */ + if (config_attr(&attr, &parsed_terms, parse_state, config_term_pmu)) { + parse_events_terms__exit(&parsed_terms); + return -EINVAL; + } + + /* Look for event names in the terms and rewrite into format based terms. */ + if (perf_pmu__check_alias(pmu, &parsed_terms, + &info, &alias_rewrote_terms, + &alternate_hw_config, err)) { + parse_events_terms__exit(&parsed_terms); + return -EINVAL; + } + + if (verbose > 1) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + parse_events_terms__to_strbuf(&parsed_terms, &sb); + fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf); + strbuf_release(&sb); + } + + /* Configure attr/terms again if an alias was expanded. */ + if (alias_rewrote_terms && + config_attr(&attr, &parsed_terms, parse_state, config_term_pmu)) { + parse_events_terms__exit(&parsed_terms); + return -EINVAL; + } + + if (get_config_terms(&parsed_terms, &config_terms)) { + parse_events_terms__exit(&parsed_terms); + return -ENOMEM; + } + + /* Record which bits of attr->config were changed by the user. */ + if (get_config_chgs(pmu, &parsed_terms, &config_terms)) { + parse_events_terms__exit(&parsed_terms); + return -ENOMEM; + } + + /* Skip configuring hard coded terms that were applied by config_attr. */ + if (perf_pmu__config(pmu, &attr, &parsed_terms, /*apply_hardcoded=*/false, + parse_state->error)) { + free_config_terms(&config_terms); + parse_events_terms__exit(&parsed_terms); + return -EINVAL; + } + + term_cpu = get_config_cpu(&parsed_terms, parse_state->fake_pmu); + evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, + get_config_name(&parsed_terms), + get_config_metric_id(&parsed_terms), pmu, + &config_terms, first_wildcard_match, term_cpu, alternate_hw_config); + perf_cpu_map__put(term_cpu); + if (!evsel) { + parse_events_terms__exit(&parsed_terms); + return -ENOMEM; + } + + if (evsel->name) + evsel->use_config_name = true; + + evsel->percore = config_term_percore(&evsel->config_terms); + + parse_events_terms__exit(&parsed_terms); + free((char *)evsel->unit); + evsel->unit = strdup(info.unit); + evsel->scale = info.scale; + evsel->per_pkg = info.per_pkg; + evsel->snapshot = info.snapshot; + evsel->retirement_latency.mean = info.retirement_latency_mean; + evsel->retirement_latency.min = info.retirement_latency_min; + evsel->retirement_latency.max = info.retirement_latency_max; + + return 0; +} + +int parse_events_multi_pmu_add(struct parse_events_state *parse_state, + const char *event_name, + const struct parse_events_terms *const_parsed_terms, + struct list_head **listp, void *loc_) +{ + struct parse_events_term *term; + struct list_head *list = NULL; + struct perf_pmu *pmu = NULL; + YYLTYPE *loc = loc_; + int ok = 0; + const char *config; + struct parse_events_terms parsed_terms; + struct evsel *first_wildcard_match = NULL; + + *listp = NULL; + + parse_events_terms__init(&parsed_terms); + if (const_parsed_terms) { + int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms); + + if (ret) + return ret; + } + + config = strdup(event_name); + if (!config) + goto out_err; + + if (parse_events_term__num(&term, + PARSE_EVENTS__TERM_TYPE_USER, + config, /*num=*/1, /*novalue=*/true, + loc, /*loc_val=*/NULL) < 0) { + zfree(&config); + goto out_err; + } + list_add_tail(&term->list, &parsed_terms.terms); + + /* 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_pmus__scan_for_event(pmu, event_name)) != NULL) { + + if (parse_events__filter_pmu(parse_state, pmu)) + continue; + + if (!perf_pmu__have_event(pmu, event_name)) + continue; + + if (!parse_events_add_pmu(parse_state, list, pmu, + &parsed_terms, first_wildcard_match)) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + parse_events_terms__to_strbuf(&parsed_terms, &sb); + pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf); + strbuf_release(&sb); + ok++; + } + if (first_wildcard_match == NULL) + first_wildcard_match = container_of(list->prev, struct evsel, core.node); + } + + if (parse_state->fake_pmu) { + if (!parse_events_add_pmu(parse_state, list, perf_pmus__fake_pmu(), &parsed_terms, + first_wildcard_match)) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + parse_events_terms__to_strbuf(&parsed_terms, &sb); + pr_debug("%s -> fake/%s/\n", event_name, sb.buf); + strbuf_release(&sb); + ok++; + } + } + +out_err: + parse_events_terms__exit(&parsed_terms); + if (ok) + *listp = list; + else + free(list); + + return ok ? 0 : -1; +} + +int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state, + const char *event_or_pmu, + const struct parse_events_terms *const_parsed_terms, + struct list_head **listp, + void *loc_) +{ + YYLTYPE *loc = loc_; + struct perf_pmu *pmu; + int ok = 0; + char *help; + struct evsel *first_wildcard_match = NULL; + + *listp = malloc(sizeof(**listp)); + if (!*listp) + return -ENOMEM; + + INIT_LIST_HEAD(*listp); + + /* Attempt to add to list assuming event_or_pmu is a PMU name. */ + pmu = perf_pmus__find(event_or_pmu); + if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, + first_wildcard_match)) + return 0; + + if (parse_state->fake_pmu) { + if (!parse_events_add_pmu(parse_state, *listp, perf_pmus__fake_pmu(), + const_parsed_terms, + first_wildcard_match)) + return 0; + } + + pmu = NULL; + /* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */ + while ((pmu = perf_pmus__scan_matching_wildcard(pmu, event_or_pmu)) != NULL) { + + if (parse_events__filter_pmu(parse_state, pmu)) + continue; + + if (!parse_events_add_pmu(parse_state, *listp, pmu, + const_parsed_terms, + first_wildcard_match)) { + ok++; + parse_state->wild_card_pmus = true; + } + if (first_wildcard_match == NULL) { + first_wildcard_match = + container_of((*listp)->prev, struct evsel, core.node); + } + } + if (ok) + return 0; + + /* Failure to add, assume event_or_pmu is an event name. */ + zfree(listp); + if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, + const_parsed_terms, listp, loc)) + return 0; + + if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0) + help = NULL; + parse_events_error__handle(parse_state->error, loc->first_column, + strdup("Bad event or PMU"), + help); + zfree(listp); + return -EINVAL; +} + +void parse_events__set_leader(char *name, struct list_head *list) +{ + struct evsel *leader; + + if (list_empty(list)) { + WARN_ONCE(true, "WARNING: failed to set leader: empty list"); + return; + } + + leader = list_first_entry(list, struct evsel, core.node); + __perf_evlist__set_leader(list, &leader->core); + zfree(&leader->group_name); + leader->group_name = name; +} + +static int parse_events__modifier_list(struct parse_events_state *parse_state, + YYLTYPE *loc, + struct list_head *list, + struct parse_events_modifier mod, + bool group) +{ + struct evsel *evsel; + + if (!group && mod.weak) { + parse_events_error__handle(parse_state->error, loc->first_column, + strdup("Weak modifier is for use with groups"), NULL); + return -EINVAL; + } + + __evlist__for_each_entry(list, evsel) { + /* Translate modifiers into the equivalent evsel excludes. */ + int eu = group ? evsel->core.attr.exclude_user : 0; + int ek = group ? evsel->core.attr.exclude_kernel : 0; + int eh = group ? evsel->core.attr.exclude_hv : 0; + int eH = group ? evsel->core.attr.exclude_host : 0; + int eG = group ? evsel->core.attr.exclude_guest : 0; + int exclude = eu | ek | eh; + int exclude_GH = eG | eH; + + if (mod.user) { + if (!exclude) + exclude = eu = ek = eh = 1; + eu = 0; + } + if (mod.kernel) { + if (!exclude) + exclude = eu = ek = eh = 1; + ek = 0; + } + if (mod.hypervisor) { + if (!exclude) + exclude = eu = ek = eh = 1; + eh = 0; + } + if (mod.guest) { + if (!exclude_GH) + exclude_GH = eG = eH = 1; + eG = 0; + } + if (mod.host) { + if (!exclude_GH) + exclude_GH = eG = eH = 1; + eH = 0; + } + if (!exclude_GH && exclude_GH_default) { + if (perf_host) + eG = 1; + else if (perf_guest) + eH = 1; + } + + evsel->core.attr.exclude_user = eu; + evsel->core.attr.exclude_kernel = ek; + evsel->core.attr.exclude_hv = eh; + evsel->core.attr.exclude_host = eH; + evsel->core.attr.exclude_guest = eG; + evsel->exclude_GH = exclude_GH; + + /* Simple modifiers copied to the evsel. */ + if (mod.precise) { + u8 precise = evsel->core.attr.precise_ip + mod.precise; + /* + * 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) { + char *help; + + if (asprintf(&help, + "Maximum combined precise value is 3, adding precision to \"%s\"", + evsel__name(evsel)) > 0) { + parse_events_error__handle(parse_state->error, + loc->first_column, + help, NULL); + } + return -EINVAL; + } + evsel->core.attr.precise_ip = precise; + } + if (mod.precise_max) + evsel->precise_max = 1; + if (mod.non_idle) + evsel->core.attr.exclude_idle = 1; + if (mod.sample_read) + evsel->sample_read = 1; + if (mod.pinned && evsel__is_group_leader(evsel)) + evsel->core.attr.pinned = 1; + if (mod.exclusive && evsel__is_group_leader(evsel)) + evsel->core.attr.exclusive = 1; + if (mod.weak) + evsel->weak_group = true; + if (mod.bpf) + evsel->bpf_counter = true; + if (mod.retire_lat) + evsel->retire_lat = true; + if (mod.dont_regroup) + evsel->dont_regroup = true; + } + return 0; +} + +int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc, + struct list_head *list, + struct parse_events_modifier mod) +{ + return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true); +} + +int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc, + struct list_head *list, + struct parse_events_modifier mod) +{ + return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false); +} + +int parse_events__set_default_name(struct list_head *list, char *name) +{ + struct evsel *evsel; + bool used_name = false; + + __evlist__for_each_entry(list, evsel) { + if (!evsel->name) { + evsel->name = used_name ? strdup(name) : name; + used_name = true; + if (!evsel->name) + return -ENOMEM; + } + } + if (!used_name) + free(name); + return 0; +} + +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 parse_events_terms *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); + if (!ret) + list_splice(&parse_state.terms->terms, &terms->terms); + + zfree(&parse_state.terms); + return ret; +} + +static int evsel__compute_group_pmu_name(struct evsel *evsel, + const struct list_head *head) +{ + struct evsel *leader = evsel__leader(evsel); + struct evsel *pos; + const char *group_pmu_name; + struct perf_pmu *pmu = evsel__find_pmu(evsel); + + if (!pmu) { + /* + * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU + * is a core PMU, but in heterogeneous systems this is + * unknown. For now pick the first core PMU. + */ + pmu = perf_pmus__scan_core(NULL); + } + if (!pmu) { + pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); + return -EINVAL; + } + group_pmu_name = pmu->name; + /* + * Software events may be in a group with other uncore PMU events. Use + * the pmu_name of the first non-software event to avoid breaking the + * software event out of the group. + * + * Aux event leaders, like intel_pt, expect a group with events from + * other PMUs, so substitute the AUX event's PMU in this case. + */ + if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { + struct perf_pmu *leader_pmu = evsel__find_pmu(leader); + + if (!leader_pmu) { + /* As with determining pmu above. */ + leader_pmu = perf_pmus__scan_core(NULL); + } + /* + * Starting with the leader, find the first event with a named + * non-software PMU. for_each_group_(member|evsel) isn't used as + * the list isn't yet sorted putting evsel's in the same group + * together. + */ + if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { + group_pmu_name = leader_pmu->name; + } else if (leader->core.nr_members > 1) { + list_for_each_entry(pos, head, core.node) { + struct perf_pmu *pos_pmu; + + if (pos == leader || evsel__leader(pos) != leader) + continue; + pos_pmu = evsel__find_pmu(pos); + if (!pos_pmu) { + /* As with determining pmu above. */ + pos_pmu = perf_pmus__scan_core(NULL); + } + if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { + group_pmu_name = pos_pmu->name; + break; + } + } + } + } + /* Record computed name. */ + evsel->group_pmu_name = strdup(group_pmu_name); + return evsel->group_pmu_name ? 0 : -ENOMEM; +} + +__weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) +{ + /* Order by insertion index. */ + return lhs->core.idx - rhs->core.idx; +} + +static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) +{ + const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); + const struct evsel *lhs = container_of(lhs_core, struct evsel, core); + const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); + const struct evsel *rhs = container_of(rhs_core, struct evsel, core); + int *force_grouped_idx = _fg_idx; + int lhs_sort_idx, rhs_sort_idx, ret; + const char *lhs_pmu_name, *rhs_pmu_name; + + /* + * Get the indexes of the 2 events to sort. If the events are + * in groups then the leader's index is used otherwise the + * event's index is used. An index may be forced for events that + * must be in the same group, namely Intel topdown events. + */ + if (lhs->dont_regroup) { + lhs_sort_idx = lhs_core->idx; + } else if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)) { + lhs_sort_idx = *force_grouped_idx; + } else { + bool lhs_has_group = lhs_core->leader != lhs_core || lhs_core->nr_members > 1; + + lhs_sort_idx = lhs_has_group ? lhs_core->leader->idx : lhs_core->idx; + } + if (rhs->dont_regroup) { + rhs_sort_idx = rhs_core->idx; + } else if (*force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)) { + rhs_sort_idx = *force_grouped_idx; + } else { + bool rhs_has_group = rhs_core->leader != rhs_core || rhs_core->nr_members > 1; + + rhs_sort_idx = rhs_has_group ? rhs_core->leader->idx : rhs_core->idx; + } + + /* If the indices differ then respect the insertion order. */ + if (lhs_sort_idx != rhs_sort_idx) + return lhs_sort_idx - rhs_sort_idx; + + /* + * Ignoring forcing, lhs_sort_idx == rhs_sort_idx so lhs and rhs should + * be in the same group. Events in the same group need to be ordered by + * their grouping PMU name as the group will be broken to ensure only + * events on the same PMU are programmed together. + * + * With forcing the lhs_sort_idx == rhs_sort_idx shows that one or both + * events are being forced to be at force_group_index. If only one event + * is being forced then the other event is the group leader of the group + * we're trying to force the event into. Ensure for the force grouped + * case that the PMU name ordering is also respected. + */ + lhs_pmu_name = lhs->group_pmu_name; + rhs_pmu_name = rhs->group_pmu_name; + ret = strcmp(lhs_pmu_name, rhs_pmu_name); + if (ret) + return ret; + + /* + * Architecture specific sorting, by default sort events in the same + * group with the same PMU by their insertion index. On Intel topdown + * constraints must be adhered to - slots first, etc. + */ + return arch_evlist__cmp(lhs, rhs); +} + +int __weak arch_evlist__add_required_events(struct list_head *list __always_unused) +{ + return 0; +} + +static int parse_events__sort_events_and_fix_groups(struct list_head *list) +{ + int idx = 0, force_grouped_idx = -1; + struct evsel *pos, *cur_leader = NULL; + struct perf_evsel *cur_leaders_grp = NULL; + bool idx_changed = false; + int orig_num_leaders = 0, num_leaders = 0; + int ret; + struct evsel *force_grouped_leader = NULL; + bool last_event_was_forced_leader = false; + + /* On x86 topdown metrics events require a slots event. */ + ret = arch_evlist__add_required_events(list); + if (ret) + return ret; + + /* + * Compute index to insert ungrouped events at. Place them where the + * first ungrouped event appears. + */ + list_for_each_entry(pos, list, core.node) { + const struct evsel *pos_leader = evsel__leader(pos); + + ret = evsel__compute_group_pmu_name(pos, list); + if (ret) + return ret; + + if (pos == pos_leader) + orig_num_leaders++; + + /* + * Ensure indexes are sequential, in particular for multiple + * event lists being merged. The indexes are used to detect when + * the user order is modified. + */ + pos->core.idx = idx++; + + /* + * Remember an index to sort all forced grouped events + * together to. Use the group leader as some events + * must appear first within the group. + */ + if (force_grouped_idx == -1 && arch_evsel__must_be_in_group(pos)) + force_grouped_idx = pos_leader->core.idx; + } + + /* Sort events. */ + list_sort(&force_grouped_idx, list, evlist__cmp); + + /* + * Recompute groups, splitting for PMUs and adding groups for events + * that require them. + */ + idx = 0; + list_for_each_entry(pos, list, core.node) { + struct evsel *pos_leader = evsel__leader(pos); + const char *pos_pmu_name = pos->group_pmu_name; + const char *cur_leader_pmu_name; + bool pos_force_grouped = force_grouped_idx != -1 && !pos->dont_regroup && + arch_evsel__must_be_in_group(pos); + + /* Reset index and nr_members. */ + if (pos->core.idx != idx) + idx_changed = true; + pos->core.idx = idx++; + pos->core.nr_members = 0; + + /* + * Set the group leader respecting the given groupings and that + * groups can't span PMUs. + */ + if (!cur_leader || pos->dont_regroup) { + cur_leader = pos->dont_regroup ? pos_leader : pos; + cur_leaders_grp = &cur_leader->core; + if (pos_force_grouped) + force_grouped_leader = pos; + } + cur_leader_pmu_name = cur_leader->group_pmu_name; + if (strcmp(cur_leader_pmu_name, pos_pmu_name)) { + /* PMU changed so the group/leader must change. */ + cur_leader = pos; + cur_leaders_grp = pos->core.leader; + if (pos_force_grouped && force_grouped_leader == NULL) + force_grouped_leader = pos; + } else if (cur_leaders_grp != pos->core.leader) { + bool split_even_if_last_leader_was_forced = true; + + /* + * Event is for a different group. If the last event was + * the forced group leader then subsequent group events + * and forced events should be in the same group. If + * there are no other forced group events then the + * forced group leader wasn't really being forced into a + * group, it just set arch_evsel__must_be_in_group, and + * we don't want the group to split here. + */ + if (force_grouped_idx != -1 && last_event_was_forced_leader) { + struct evsel *pos2 = pos; + /* + * Search the whole list as the group leaders + * aren't currently valid. + */ + list_for_each_entry_continue(pos2, list, core.node) { + if (pos->core.leader == pos2->core.leader && + arch_evsel__must_be_in_group(pos2)) { + split_even_if_last_leader_was_forced = false; + break; + } + } + } + if (!last_event_was_forced_leader || split_even_if_last_leader_was_forced) { + if (pos_force_grouped) { + if (force_grouped_leader) { + cur_leader = force_grouped_leader; + cur_leaders_grp = force_grouped_leader->core.leader; + } else { + cur_leader = force_grouped_leader = pos; + cur_leaders_grp = &pos->core; + } + } else { + cur_leader = pos; + cur_leaders_grp = pos->core.leader; + } + } + } + if (pos_leader != cur_leader) { + /* The leader changed so update it. */ + evsel__set_leader(pos, cur_leader); + } + last_event_was_forced_leader = (force_grouped_leader == pos); + } + + /* + * Make sure the first wildcard match is the earliest entry in the list. + * Since list_sort might have reordered the aliases, the original leader + * might not be at the head of the list anymore. We find the first + * alias in the sorted list and make it the new leader, and redirect + * all other aliases to it. + */ + list_for_each_entry(pos, list, core.node) { + struct evsel *orig_leader = pos->first_wildcard_match; + + if (!orig_leader) + continue; + + if (orig_leader->first_wildcard_match) { + /* Original leader was redirected to a new leader */ + pos->first_wildcard_match = orig_leader->first_wildcard_match; + } else if (pos->core.idx < orig_leader->core.idx) { + /* + * We are earlier than the original leader in sorted order, + * and no earlier alias has claimed leadership yet. + */ + orig_leader->first_wildcard_match = pos; + pos->first_wildcard_match = NULL; + } + } + + list_for_each_entry(pos, list, core.node) { + struct evsel *pos_leader = evsel__leader(pos); + + if (pos == pos_leader) + num_leaders++; + pos_leader->core.nr_members++; + } + return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; +} + +int __parse_events(struct evlist *evlist, const char *str, + const char *pmu_filter, bool cputype_filter, + struct parse_events_error *err, bool fake_pmu, + bool warn_if_reordered, bool fake_tp) +{ + struct parse_events_state parse_state = { + .list = LIST_HEAD_INIT(parse_state.list), + .idx = evlist__nr_entries(evlist), + .error = err, + .stoken = PE_START_EVENTS, + .fake_pmu = fake_pmu, + .fake_tp = fake_tp, + .pmu_filter = pmu_filter, + .cputype_filter = cputype_filter, + .match_legacy_cache_terms = true, + }; + int ret, ret2; + + ret = parse_events__scanner(str, &parse_state); + + if (!ret && list_empty(&parse_state.list)) { + WARN_ONCE(true, "WARNING: event parser found nothing\n"); + return -1; + } + + ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); + if (ret2 < 0 && !ret) + ret = ret2; + + /* + * Add list to the evlist even with errors to allow callers to clean up. + */ + evlist__splice_list_tail(evlist, &parse_state.list); + + if (ret2 > 0 && warn_if_reordered && !parse_state.wild_card_pmus) { + evlist__uniquify_evsel_names(evlist, &stat_config); + pr_warning("WARNING: events were regrouped to match PMUs\n"); + + if (verbose > 0) { + struct strbuf sb = STRBUF_INIT; + + evlist__format_evsels(evlist, &sb, 2048); + pr_debug("evlist after sorting/fixing: '%s'\n", sb.buf); + strbuf_release(&sb); + } + } + if (!ret) { + struct evsel *last; + + last = evlist__last(evlist); + last->cmdline_group_boundary = true; + + return 0; + } + + /* + * There are 2 users - builtin-record and builtin-test objects. + * Both call evlist__put 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); + if (ret && verbose > 0) + parse_events_error__print(&err, str); + parse_events_error__exit(&err); + return ret; +} + +struct parse_events_error_entry { + /** @list: The list the error is part of. */ + struct list_head list; + /** @idx: index in the parsed string */ + int idx; + /** @str: string to display at the index */ + char *str; + /** @help: optional help string */ + char *help; +}; + +void parse_events_error__init(struct parse_events_error *err) +{ + INIT_LIST_HEAD(&err->list); +} + +void parse_events_error__exit(struct parse_events_error *err) +{ + struct parse_events_error_entry *pos, *tmp; + + list_for_each_entry_safe(pos, tmp, &err->list, list) { + zfree(&pos->str); + zfree(&pos->help); + list_del_init(&pos->list); + free(pos); + } +} + +void parse_events_error__handle(struct parse_events_error *err, int idx, + char *str, char *help) +{ + struct parse_events_error_entry *entry; + + if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) + goto out_free; + + entry = zalloc(sizeof(*entry)); + if (!entry) { + pr_err("Failed to allocate memory for event parsing error: %s (%s)\n", + str, help ?: ""); + goto out_free; + } + entry->idx = idx; + entry->str = str; + entry->help = help; + list_add(&entry->list, &err->list); + 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(const struct parse_events_error *err, + const char *event) +{ + struct parse_events_error_entry *pos; + bool first = true; + + list_for_each_entry(pos, &err->list, list) { + if (!first) + fputs("\n", stderr); + __parse_events_error__print(pos->idx, pos->str, pos->help, event); + first = false; + } +} + +/* + * In the list of errors err, do any of the error strings (str) contain the + * given needle string? + */ +bool parse_events_error__contains(const struct parse_events_error *err, + const char *needle) +{ + struct parse_events_error_entry *pos; + + list_for_each_entry(pos, &err->list, list) { + if (strstr(pos->str, needle) != NULL) + return true; + } + return false; +} + +#undef MAX_WIDTH + +int parse_events_option(const struct option *opt, const char *str, + int unset __maybe_unused) +{ + struct parse_events_option_args *args = opt->value; + struct parse_events_error err; + int ret; + + parse_events_error__init(&err); + ret = __parse_events(*args->evlistp, str, args->pmu_filter, + args->cputype_filter, &err, /*fake_pmu=*/false, + /*warn_if_reordered=*/true, + /*fake_tp=*/false); + + 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 parse_events_option_args *args = opt->value; + int ret; + + if (*args->evlistp == NULL) { + *args->evlistp = evlist__new(); + + if (*args->evlistp == NULL) { + fprintf(stderr, "Not enough memory to create evlist\n"); + return -1; + } + } + ret = parse_events_option(opt, str, unset); + if (ret) { + evlist__put(*args->evlistp); + *args->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__nr_entries(evlist) > 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(evlist)->entries) + return 0; + last = list_entry(last->core.node.prev, struct evsel, core.node); + } while (!last->cmdline_group_boundary); + + return 0; +} + +/* Will a tracepoint filter work for str or should a BPF filter be used? */ +static bool is_possible_tp_filter(const char *str) +{ + return strstr(str, "uid") == NULL; +} + +static int set_filter(struct evsel *evsel, const void *arg) +{ + const char *str = arg; + int nr_addr_filters = 0; + struct perf_pmu *pmu; + + 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 && is_possible_tp_filter(str)) { + if (evsel__append_tp_filter(evsel, str) < 0) { + fprintf(stderr, + "not enough memory to hold filter string\n"); + return -1; + } + + return 0; + } + + pmu = evsel__find_pmu(evsel); + if (pmu) { + perf_pmu__scan_file(pmu, "nr_addr_filters", + "%d", &nr_addr_filters); + } + if (!nr_addr_filters) + return perf_bpf_filter__parse(&evsel->bpf_filters, str); + + 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); +} + +int parse_uid_filter(struct evlist *evlist, uid_t uid) +{ + struct option opt = { + .value = &evlist, + }; + char buf[128]; + int ret; + + snprintf(buf, sizeof(buf), "uid == %d", uid); + ret = parse_filter(&opt, buf, /*unset=*/0); + if (ret) { + if (use_browser >= 1) { + /* + * Use ui__warning so a pop up appears above the + * underlying BPF error message. + */ + ui__warning("Failed to add UID filtering that uses BPF filtering.\n"); + } else { + fprintf(stderr, "Failed to add UID filtering that uses BPF filtering.\n"); + } + } + return ret; +} + +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, + enum parse_events__term_type type_term, + const 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(parse_events__term_type_str(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, /*str=*/NULL, num); +} + +int parse_events_term__str(struct parse_events_term **term, + enum parse_events__term_type 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, /*num=*/0); +} + +int parse_events_term__term(struct parse_events_term **term, + enum parse_events__term_type term_lhs, + enum parse_events__term_type term_rhs, + void *loc_term, void *loc_val) +{ + return parse_events_term__str(term, term_lhs, NULL, + strdup(parse_events__term_type_str(term_rhs)), + loc_term, loc_val); +} + +int parse_events_term__clone(struct parse_events_term **new, + const struct parse_events_term *term) +{ + char *str; + struct parse_events_term temp = *term; + + temp.used = false; + 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, /*str=*/NULL, term->val.num); + + str = strdup(term->val.str); + if (!str) { + zfree(&temp.config); + return -ENOMEM; + } + return new_term(new, &temp, str, /*num=*/0); +} + +void parse_events_term__delete(struct parse_events_term *term) +{ + if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) + zfree(&term->val.str); + + zfree(&term->config); + free(term); +} + +static int parse_events_terms__copy(const struct parse_events_terms *src, + struct parse_events_terms *dest) +{ + struct parse_events_term *term; + + list_for_each_entry (term, &src->terms, list) { + struct parse_events_term *n; + int ret; + + ret = parse_events_term__clone(&n, term); + if (ret) + return ret; + + list_add_tail(&n->list, &dest->terms); + } + return 0; +} + +void parse_events_terms__init(struct parse_events_terms *terms) +{ + INIT_LIST_HEAD(&terms->terms); +} + +void parse_events_terms__exit(struct parse_events_terms *terms) +{ + struct parse_events_term *term, *h; + + list_for_each_entry_safe(term, h, &terms->terms, list) { + list_del_init(&term->list); + parse_events_term__delete(term); + } +} + +void parse_events_terms__delete(struct parse_events_terms *terms) +{ + if (!terms) + return; + parse_events_terms__exit(terms); + free(terms); +} + +static int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb) +{ + struct parse_events_term *term; + bool first = true; + + if (!terms) + return 0; + + list_for_each_entry(term, &terms->terms, list) { + int ret; + + if (!first) { + ret = strbuf_addch(sb, ','); + if (ret < 0) + return ret; + } + first = false; + + if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) + if (term->no_value) { + assert(term->val.num == 1); + ret = strbuf_addf(sb, "%s", term->config); + } else + ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); + else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { + if (term->config) { + ret = strbuf_addf(sb, "%s=", term->config); + if (ret < 0) + return ret; + } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { + ret = strbuf_addf(sb, "%s=", + parse_events__term_type_str(term->type_term)); + if (ret < 0) + return ret; + } + assert(!term->no_value); + ret = strbuf_addf(sb, "%s", term->val.str); + } + if (ret < 0) + return ret; + } + return 0; +} + +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 = parse_events__term_type_str(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; +} -- cgit v1.3.1