summaryrefslogtreecommitdiffstats
path: root/kernel/tools/perf/util/parse-events.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/tools/perf/util/parse-events.c')
-rw-r--r--kernel/tools/perf/util/parse-events.c1537
1 files changed, 1537 insertions, 0 deletions
diff --git a/kernel/tools/perf/util/parse-events.c b/kernel/tools/perf/util/parse-events.c
new file mode 100644
index 000000000..be0655388
--- /dev/null
+++ b/kernel/tools/perf/util/parse-events.c
@@ -0,0 +1,1537 @@
+#include <linux/hw_breakpoint.h>
+#include "util.h"
+#include "../perf.h"
+#include "evlist.h"
+#include "evsel.h"
+#include "parse-options.h"
+#include "parse-events.h"
+#include "exec_cmd.h"
+#include "string.h"
+#include "symbol.h"
+#include "cache.h"
+#include "header.h"
+#include "debug.h"
+#include <api/fs/debugfs.h>
+#include "parse-events-bison.h"
+#define YY_EXTRA_TYPE int
+#include "parse-events-flex.h"
+#include "pmu.h"
+#include "thread_map.h"
+
+#define MAX_NAME_LEN 100
+
+#ifdef PARSER_DEBUG
+extern int parse_events_debug;
+#endif
+int parse_events_parse(void *data, void *scanner);
+
+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 = "",
+ },
+};
+
+#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, sys_next) \
+ while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
+ if (sys_dirent.d_type == DT_DIR && \
+ (strcmp(sys_dirent.d_name, ".")) && \
+ (strcmp(sys_dirent.d_name, "..")))
+
+static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
+{
+ char evt_path[MAXPATHLEN];
+ int fd;
+
+ snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
+ sys_dir->d_name, evt_dir->d_name);
+ fd = open(evt_path, O_RDONLY);
+ if (fd < 0)
+ return -EINVAL;
+ close(fd);
+
+ return 0;
+}
+
+#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
+ while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
+ if (evt_dirent.d_type == DT_DIR && \
+ (strcmp(evt_dirent.d_name, ".")) && \
+ (strcmp(evt_dirent.d_name, "..")) && \
+ (!tp_event_has_id(&sys_dirent, &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_next, *evt_next, sys_dirent, evt_dirent;
+ char id_buf[24];
+ int fd;
+ u64 id;
+ char evt_path[MAXPATHLEN];
+ char dir_path[MAXPATHLEN];
+
+ sys_dir = opendir(tracing_events_path);
+ if (!sys_dir)
+ return NULL;
+
+ for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+
+ snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
+ sys_dirent.d_name);
+ evt_dir = opendir(dir_path);
+ if (!evt_dir)
+ continue;
+
+ for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+
+ snprintf(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) {
+ closedir(evt_dir);
+ closedir(sys_dir);
+ path = zalloc(sizeof(*path));
+ 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);
+ }
+
+ 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);
+ free(path);
+ path = NULL;
+ }
+
+ 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 struct perf_evsel *
+__add_event(struct list_head *list, int *idx,
+ struct perf_event_attr *attr,
+ char *name, struct cpu_map *cpus)
+{
+ struct perf_evsel *evsel;
+
+ event_attr_init(attr);
+
+ evsel = perf_evsel__new_idx(attr, (*idx)++);
+ if (!evsel)
+ return NULL;
+
+ evsel->cpus = cpus;
+ if (name)
+ evsel->name = strdup(name);
+ 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)
+{
+ return __add_event(list, idx, attr, name, NULL) ? 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;
+}
+
+int parse_events_add_cache(struct list_head *list, int *idx,
+ char *type, char *op_result1, char *op_result2)
+{
+ struct perf_event_attr attr;
+ char name[MAX_NAME_LEN];
+ 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;
+
+ 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;
+ return add_event(list, idx, &attr, name);
+}
+
+static int add_tracepoint(struct list_head *list, int *idx,
+ char *sys_name, char *evt_name)
+{
+ struct perf_evsel *evsel;
+
+ evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
+ if (!evsel)
+ return -ENOMEM;
+
+ list_add_tail(&evsel->node, list);
+
+ return 0;
+}
+
+static int add_tracepoint_multi_event(struct list_head *list, int *idx,
+ char *sys_name, char *evt_name)
+{
+ char evt_path[MAXPATHLEN];
+ struct dirent *evt_ent;
+ DIR *evt_dir;
+ int ret = 0;
+
+ snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
+ evt_dir = opendir(evt_path);
+ if (!evt_dir) {
+ perror("Can't open event dir");
+ 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;
+
+ ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
+ }
+
+ closedir(evt_dir);
+ return ret;
+}
+
+static int add_tracepoint_event(struct list_head *list, int *idx,
+ char *sys_name, char *evt_name)
+{
+ return strpbrk(evt_name, "*?") ?
+ add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
+ add_tracepoint(list, idx, sys_name, evt_name);
+}
+
+static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
+ char *sys_name, char *evt_name)
+{
+ struct dirent *events_ent;
+ DIR *events_dir;
+ int ret = 0;
+
+ events_dir = opendir(tracing_events_path);
+ if (!events_dir) {
+ perror("Can't open event dir");
+ 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);
+ }
+
+ closedir(events_dir);
+ return ret;
+}
+
+int parse_events_add_tracepoint(struct list_head *list, int *idx,
+ char *sys, char *event)
+{
+ if (strpbrk(sys, "*?"))
+ return add_tracepoint_multi_sys(list, idx, sys, event);
+ else
+ return add_tracepoint_event(list, idx, sys, event);
+}
+
+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);
+}
+
+static int config_term(struct perf_event_attr *attr,
+ struct parse_events_term *term)
+{
+#define CHECK_TYPE_VAL(type) \
+do { \
+ if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
+ 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);
+ attr->sample_period = term->val.num;
+ break;
+ case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
+ /*
+ * TODO uncomment when the field is available
+ * attr->branch_sample_type = term->val.num;
+ */
+ break;
+ case PARSE_EVENTS__TERM_TYPE_NAME:
+ CHECK_TYPE_VAL(STR);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+#undef CHECK_TYPE_VAL
+}
+
+static int config_attr(struct perf_event_attr *attr,
+ struct list_head *head, int fail)
+{
+ struct parse_events_term *term;
+
+ list_for_each_entry(term, head, list)
+ if (config_term(attr, term) && fail)
+ return -EINVAL;
+
+ return 0;
+}
+
+int parse_events_add_numeric(struct list_head *list, int *idx,
+ u32 type, u64 config,
+ struct list_head *head_config)
+{
+ struct perf_event_attr attr;
+
+ memset(&attr, 0, sizeof(attr));
+ attr.type = type;
+ attr.config = config;
+
+ if (head_config &&
+ config_attr(&attr, head_config, 1))
+ return -EINVAL;
+
+ return add_event(list, idx, &attr, NULL);
+}
+
+static int parse_events__is_name_term(struct parse_events_term *term)
+{
+ return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
+}
+
+static char *pmu_event_name(struct list_head *head_terms)
+{
+ struct parse_events_term *term;
+
+ list_for_each_entry(term, head_terms, list)
+ if (parse_events__is_name_term(term))
+ return term->val.str;
+
+ return NULL;
+}
+
+int parse_events_add_pmu(struct list_head *list, int *idx,
+ char *name, struct list_head *head_config)
+{
+ struct perf_event_attr attr;
+ struct perf_pmu_info info;
+ struct perf_pmu *pmu;
+ struct perf_evsel *evsel;
+
+ pmu = perf_pmu__find(name);
+ if (!pmu)
+ return -EINVAL;
+
+ if (pmu->default_config) {
+ memcpy(&attr, pmu->default_config,
+ sizeof(struct perf_event_attr));
+ } else {
+ memset(&attr, 0, sizeof(attr));
+ }
+
+ if (!head_config) {
+ attr.type = pmu->type;
+ evsel = __add_event(list, idx, &attr, NULL, pmu->cpus);
+ return evsel ? 0 : -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 ;)
+ */
+ config_attr(&attr, head_config, 0);
+
+ if (perf_pmu__config(pmu, &attr, head_config))
+ return -EINVAL;
+
+ evsel = __add_event(list, idx, &attr, pmu_event_name(head_config),
+ pmu->cpus);
+ if (evsel) {
+ evsel->unit = info.unit;
+ evsel->scale = info.scale;
+ evsel->per_pkg = info.per_pkg;
+ evsel->snapshot = info.snapshot;
+ }
+
+ return evsel ? 0 : -ENOMEM;
+}
+
+int parse_events__modifier_group(struct list_head *list,
+ char *event_mod)
+{
+ return parse_events__modifier_event(list, event_mod, true);
+}
+
+void parse_events__set_leader(char *name, struct list_head *list)
+{
+ struct perf_evsel *leader;
+
+ __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 exclude_GH;
+ int sample_read;
+ int pinned;
+};
+
+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 sample_read = 0;
+ int pinned = evsel ? evsel->attr.pinned : 0;
+
+ int exclude = eu | ek | eh;
+ int exclude_GH = evsel ? evsel->exclude_GH : 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 == 'S') {
+ sample_read = 1;
+ } else if (*str == 'D') {
+ pinned = 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->exclude_GH = exclude_GH;
+ mod->sample_read = sample_read;
+ mod->pinned = pinned;
+
+ 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("ukhGHpppSDI") - 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(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;
+
+ 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(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 strcmp(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;
+ free(p->symbol);
+ }
+ free(perf_pmu_events_list);
+ perf_pmu_events_list = NULL;
+ 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 = perf_pmu__find("cpu");
+ if ((pmu == NULL) || list_empty(&pmu->aliases)) {
+ perf_pmu_events_list_num = -1;
+ return;
+ }
+ list_for_each_entry(alias, &pmu->aliases, list) {
+ if (strchr(alias->name, '-'))
+ len++;
+ len++;
+ }
+ 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;
+ 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);
+ free(p.symbol);
+ return r ? r->type : PMU_EVENT_SYMBOL_ERR;
+}
+
+static int parse_events__scanner(const char *str, void *data, 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(data, 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_terms data = {
+ .terms = NULL,
+ };
+ int ret;
+
+ ret = parse_events__scanner(str, &data, PE_START_TERMS);
+ if (!ret) {
+ list_splice(data.terms, terms);
+ zfree(&data.terms);
+ return 0;
+ }
+
+ if (data.terms)
+ parse_events__free_terms(data.terms);
+ return ret;
+}
+
+int parse_events(struct perf_evlist *evlist, const char *str)
+{
+ struct parse_events_evlist data = {
+ .list = LIST_HEAD_INIT(data.list),
+ .idx = evlist->nr_entries,
+ };
+ int ret;
+
+ ret = parse_events__scanner(str, &data, PE_START_EVENTS);
+ perf_pmu__parse_cleanup();
+ if (!ret) {
+ int entries = data.idx - evlist->nr_entries;
+ perf_evlist__splice_list_tail(evlist, &data.list, entries);
+ evlist->nr_groups += data.nr_groups;
+ 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;
+}
+
+int parse_events_option(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+ int ret = parse_events(evlist, str);
+
+ if (ret) {
+ fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
+ fprintf(stderr, "Run 'perf list' for a list of valid events\n");
+ }
+ return ret;
+}
+
+int parse_filter(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+ struct perf_evsel *last = NULL;
+
+ if (evlist->nr_entries > 0)
+ last = perf_evlist__last(evlist);
+
+ if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
+ fprintf(stderr,
+ "--filter option should follow a -e tracepoint option\n");
+ return -1;
+ }
+
+ last->filter = strdup(str);
+ if (last->filter == NULL) {
+ fprintf(stderr, "not enough memory to hold filter string\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+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_next, *evt_next, sys_dirent, evt_dirent;
+ char evt_path[MAXPATHLEN];
+ char dir_path[MAXPATHLEN];
+ char **evt_list = NULL;
+ unsigned int evt_i = 0, evt_num = 0;
+ bool evt_num_known = false;
+
+restart:
+ sys_dir = opendir(tracing_events_path);
+ 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, sys_next) {
+ if (subsys_glob != NULL &&
+ !strglobmatch(sys_dirent.d_name, subsys_glob))
+ continue;
+
+ snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
+ sys_dirent.d_name);
+ evt_dir = opendir(dir_path);
+ if (!evt_dir)
+ continue;
+
+ for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+ 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)
+ goto out_close_evt_dir;
+ evt_i++;
+ }
+ closedir(evt_dir);
+ }
+ 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)
+ 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_next, *evt_next, sys_dirent, evt_dirent;
+ char evt_path[MAXPATHLEN];
+ char dir_path[MAXPATHLEN];
+
+ sys_dir = opendir(tracing_events_path);
+ if (!sys_dir)
+ return 0;
+
+ for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+
+ snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
+ sys_dirent.d_name);
+ evt_dir = opendir(dir_path);
+ if (!evt_dir)
+ continue;
+
+ for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+ 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);
+ }
+ 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 {
+ struct thread_map map;
+ int threads[1];
+ } tmap = {
+ .map.nr = 1,
+ .threads = { 0 },
+ };
+
+ evsel = perf_evsel__new(&attr);
+ if (evsel) {
+ open_return = perf_evsel__open(evsel, NULL, &tmap.map);
+ 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.map) >= 0;
+ }
+ perf_evsel__delete(evsel);
+ }
+
+ return ret;
+}
+
+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)
+ 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 &&
+ !(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)
+ 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)
+{
+ 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);
+
+ 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]);
+ printf(" (see 'man perf-list' on how to encode it)\n");
+ printf("\n");
+
+ printf(" %-50s [%s]\n",
+ "mem:<addr>[/len][:access]",
+ event_type_descriptors[PERF_TYPE_BREAKPOINT]);
+ printf("\n");
+ }
+
+ print_tracepoint_events(NULL, 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, int type_val,
+ int type_term, char *config,
+ char *str, u64 num)
+{
+ struct parse_events_term *term;
+
+ term = zalloc(sizeof(*term));
+ if (!term)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&term->list);
+ term->type_val = type_val;
+ term->type_term = type_term;
+ term->config = config;
+
+ switch (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)
+{
+ return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
+ config, NULL, num);
+}
+
+int parse_events_term__str(struct parse_events_term **term,
+ int type_term, char *config, char *str)
+{
+ return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
+ config, str, 0);
+}
+
+int parse_events_term__sym_hw(struct parse_events_term **term,
+ char *config, unsigned idx)
+{
+ struct event_symbol *sym;
+
+ BUG_ON(idx >= PERF_COUNT_HW_MAX);
+ sym = &event_symbols_hw[idx];
+
+ if (config)
+ return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
+ PARSE_EVENTS__TERM_TYPE_USER, config,
+ (char *) sym->symbol, 0);
+ else
+ return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
+ PARSE_EVENTS__TERM_TYPE_USER,
+ (char *) "event", (char *) sym->symbol, 0);
+}
+
+int parse_events_term__clone(struct parse_events_term **new,
+ struct parse_events_term *term)
+{
+ return new_term(new, term->type_val, term->type_term, term->config,
+ term->val.str, term->val.num);
+}
+
+void parse_events__free_terms(struct list_head *terms)
+{
+ struct parse_events_term *term, *h;
+
+ list_for_each_entry_safe(term, h, terms, list)
+ free(term);
+}