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-rw-r--r--tools/perf/util/parse-events.c1093
1 files changed, 1093 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
new file mode 100644
index 00000000..41982c37
--- /dev/null
+++ b/tools/perf/util/parse-events.c
@@ -0,0 +1,1093 @@
+#include "../../../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 "debugfs.h"
+
+struct event_symbol {
+ u8 type;
+ u64 config;
+ const char *symbol;
+ const char *alias;
+};
+
+enum event_result {
+ EVT_FAILED,
+ EVT_HANDLED,
+ EVT_HANDLED_ALL
+};
+
+char debugfs_path[MAXPATHLEN];
+
+#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
+#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
+
+static struct event_symbol event_symbols[] = {
+ { CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
+ { CHW(STALLED_CYCLES_FRONTEND), "stalled-cycles-frontend", "idle-cycles-frontend" },
+ { CHW(STALLED_CYCLES_BACKEND), "stalled-cycles-backend", "idle-cycles-backend" },
+ { CHW(INSTRUCTIONS), "instructions", "" },
+ { CHW(CACHE_REFERENCES), "cache-references", "" },
+ { CHW(CACHE_MISSES), "cache-misses", "" },
+ { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
+ { CHW(BRANCH_MISSES), "branch-misses", "" },
+ { CHW(BUS_CYCLES), "bus-cycles", "" },
+
+ { CSW(CPU_CLOCK), "cpu-clock", "" },
+ { CSW(TASK_CLOCK), "task-clock", "" },
+ { CSW(PAGE_FAULTS), "page-faults", "faults" },
+ { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
+ { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
+ { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
+ { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
+ { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
+ { CSW(EMULATION_FAULTS), "emulation-faults", "" },
+};
+
+#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)
+
+static const char *hw_event_names[PERF_COUNT_HW_MAX] = {
+ "cycles",
+ "instructions",
+ "cache-references",
+ "cache-misses",
+ "branches",
+ "branch-misses",
+ "bus-cycles",
+ "stalled-cycles-frontend",
+ "stalled-cycles-backend",
+};
+
+static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
+ "cpu-clock",
+ "task-clock",
+ "page-faults",
+ "context-switches",
+ "CPU-migrations",
+ "minor-faults",
+ "major-faults",
+ "alignment-faults",
+ "emulation-faults",
+};
+
+#define MAX_ALIASES 8
+
+static const char *hw_cache[][MAX_ALIASES] = {
+ { "L1-dcache", "l1-d", "l1d", "L1-data", },
+ { "L1-icache", "l1-i", "l1i", "L1-instruction", },
+ { "LLC", "L2" },
+ { "dTLB", "d-tlb", "Data-TLB", },
+ { "iTLB", "i-tlb", "Instruction-TLB", },
+ { "branch", "branches", "bpu", "btb", "bpc", },
+};
+
+static const char *hw_cache_op[][MAX_ALIASES] = {
+ { "load", "loads", "read", },
+ { "store", "stores", "write", },
+ { "prefetch", "prefetches", "speculative-read", "speculative-load", },
+};
+
+static const char *hw_cache_result[][MAX_ALIASES] = {
+ { "refs", "Reference", "ops", "access", },
+ { "misses", "miss", },
+};
+
+#define C(x) PERF_COUNT_HW_CACHE_##x
+#define CACHE_READ (1 << C(OP_READ))
+#define CACHE_WRITE (1 << C(OP_WRITE))
+#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
+#define COP(x) (1 << x)
+
+/*
+ * cache operartion stat
+ * L1I : Read and prefetch only
+ * ITLB and BPU : Read-only
+ */
+static unsigned long hw_cache_stat[C(MAX)] = {
+ [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
+ [C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
+ [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
+ [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
+ [C(ITLB)] = (CACHE_READ),
+ [C(BPU)] = (CACHE_READ),
+};
+
+#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", debugfs_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[4];
+ int fd;
+ u64 id;
+ char evt_path[MAXPATHLEN];
+ char dir_path[MAXPATHLEN];
+
+ if (debugfs_valid_mountpoint(debugfs_path))
+ return NULL;
+
+ sys_dir = opendir(debugfs_path);
+ if (!sys_dir)
+ return NULL;
+
+ for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+
+ snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_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) {
+ free(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;
+}
+
+#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
+static const char *tracepoint_id_to_name(u64 config)
+{
+ static char buf[TP_PATH_LEN];
+ struct tracepoint_path *path;
+
+ path = tracepoint_id_to_path(config);
+ if (path) {
+ snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
+ free(path->name);
+ free(path->system);
+ free(path);
+ } else
+ snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
+
+ return buf;
+}
+
+static int is_cache_op_valid(u8 cache_type, u8 cache_op)
+{
+ if (hw_cache_stat[cache_type] & COP(cache_op))
+ return 1; /* valid */
+ else
+ return 0; /* invalid */
+}
+
+static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
+{
+ static char name[50];
+
+ if (cache_result) {
+ sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
+ hw_cache_op[cache_op][0],
+ hw_cache_result[cache_result][0]);
+ } else {
+ sprintf(name, "%s-%s", hw_cache[cache_type][0],
+ hw_cache_op[cache_op][1]);
+ }
+
+ return name;
+}
+
+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";
+}
+
+const char *event_name(struct perf_evsel *evsel)
+{
+ u64 config = evsel->attr.config;
+ int type = evsel->attr.type;
+
+ if (evsel->name)
+ return evsel->name;
+
+ return __event_name(type, config);
+}
+
+const char *__event_name(int type, u64 config)
+{
+ static char buf[32];
+
+ if (type == PERF_TYPE_RAW) {
+ sprintf(buf, "raw 0x%" PRIx64, config);
+ return buf;
+ }
+
+ switch (type) {
+ case PERF_TYPE_HARDWARE:
+ if (config < PERF_COUNT_HW_MAX && hw_event_names[config])
+ return hw_event_names[config];
+ return "unknown-hardware";
+
+ case PERF_TYPE_HW_CACHE: {
+ u8 cache_type, cache_op, cache_result;
+
+ cache_type = (config >> 0) & 0xff;
+ if (cache_type > PERF_COUNT_HW_CACHE_MAX)
+ return "unknown-ext-hardware-cache-type";
+
+ cache_op = (config >> 8) & 0xff;
+ if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
+ return "unknown-ext-hardware-cache-op";
+
+ cache_result = (config >> 16) & 0xff;
+ if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
+ return "unknown-ext-hardware-cache-result";
+
+ if (!is_cache_op_valid(cache_type, cache_op))
+ return "invalid-cache";
+
+ return event_cache_name(cache_type, cache_op, cache_result);
+ }
+
+ case PERF_TYPE_SOFTWARE:
+ if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
+ return sw_event_names[config];
+ return "unknown-software";
+
+ case PERF_TYPE_TRACEPOINT:
+ return tracepoint_id_to_name(config);
+
+ default:
+ break;
+ }
+
+ return "unknown";
+}
+
+static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
+{
+ int i, j;
+ int n, longest = -1;
+
+ for (i = 0; i < size; i++) {
+ for (j = 0; j < 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) {
+ *str += longest;
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+static enum event_result
+parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
+{
+ const char *s = *str;
+ int cache_type = -1, cache_op = -1, cache_result = -1;
+
+ cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
+ /*
+ * No fallback - if we cannot get a clear cache type
+ * then bail out:
+ */
+ if (cache_type == -1)
+ return EVT_FAILED;
+
+ while ((cache_op == -1 || cache_result == -1) && *s == '-') {
+ ++s;
+
+ if (cache_op == -1) {
+ cache_op = parse_aliases(&s, hw_cache_op,
+ PERF_COUNT_HW_CACHE_OP_MAX);
+ if (cache_op >= 0) {
+ if (!is_cache_op_valid(cache_type, cache_op))
+ return 0;
+ continue;
+ }
+ }
+
+ if (cache_result == -1) {
+ cache_result = parse_aliases(&s, hw_cache_result,
+ PERF_COUNT_HW_CACHE_RESULT_MAX);
+ if (cache_result >= 0)
+ continue;
+ }
+
+ /*
+ * Can't parse this as a cache op or result, so back up
+ * to the '-'.
+ */
+ --s;
+ break;
+ }
+
+ /*
+ * 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;
+
+ attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
+ attr->type = PERF_TYPE_HW_CACHE;
+
+ *str = s;
+ return EVT_HANDLED;
+}
+
+static enum event_result
+parse_single_tracepoint_event(char *sys_name,
+ const char *evt_name,
+ unsigned int evt_length,
+ struct perf_event_attr *attr,
+ const char **strp)
+{
+ char evt_path[MAXPATHLEN];
+ char id_buf[4];
+ u64 id;
+ int fd;
+
+ snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
+ sys_name, evt_name);
+
+ fd = open(evt_path, O_RDONLY);
+ if (fd < 0)
+ return EVT_FAILED;
+
+ if (read(fd, id_buf, sizeof(id_buf)) < 0) {
+ close(fd);
+ return EVT_FAILED;
+ }
+
+ close(fd);
+ id = atoll(id_buf);
+ attr->config = id;
+ attr->type = PERF_TYPE_TRACEPOINT;
+ *strp += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */
+
+ attr->sample_type |= PERF_SAMPLE_RAW;
+ attr->sample_type |= PERF_SAMPLE_TIME;
+ attr->sample_type |= PERF_SAMPLE_CPU;
+
+ attr->sample_period = 1;
+
+
+ return EVT_HANDLED;
+}
+
+/* sys + ':' + event + ':' + flags*/
+#define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
+static enum event_result
+parse_multiple_tracepoint_event(const struct option *opt, char *sys_name,
+ const char *evt_exp, char *flags)
+{
+ char evt_path[MAXPATHLEN];
+ struct dirent *evt_ent;
+ DIR *evt_dir;
+
+ snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
+ evt_dir = opendir(evt_path);
+
+ if (!evt_dir) {
+ perror("Can't open event dir");
+ return EVT_FAILED;
+ }
+
+ while ((evt_ent = readdir(evt_dir))) {
+ char event_opt[MAX_EVOPT_LEN + 1];
+ int len;
+
+ 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_exp))
+ continue;
+
+ len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
+ evt_ent->d_name, flags ? ":" : "",
+ flags ?: "");
+ if (len < 0)
+ return EVT_FAILED;
+
+ if (parse_events(opt, event_opt, 0))
+ return EVT_FAILED;
+ }
+
+ return EVT_HANDLED_ALL;
+}
+
+static enum event_result
+parse_tracepoint_event(const struct option *opt, const char **strp,
+ struct perf_event_attr *attr)
+{
+ const char *evt_name;
+ char *flags = NULL, *comma_loc;
+ char sys_name[MAX_EVENT_LENGTH];
+ unsigned int sys_length, evt_length;
+
+ if (debugfs_valid_mountpoint(debugfs_path))
+ return 0;
+
+ evt_name = strchr(*strp, ':');
+ if (!evt_name)
+ return EVT_FAILED;
+
+ sys_length = evt_name - *strp;
+ if (sys_length >= MAX_EVENT_LENGTH)
+ return 0;
+
+ strncpy(sys_name, *strp, sys_length);
+ sys_name[sys_length] = '\0';
+ evt_name = evt_name + 1;
+
+ comma_loc = strchr(evt_name, ',');
+ if (comma_loc) {
+ /* take the event name up to the comma */
+ evt_name = strndup(evt_name, comma_loc - evt_name);
+ }
+ flags = strchr(evt_name, ':');
+ if (flags) {
+ /* split it out: */
+ evt_name = strndup(evt_name, flags - evt_name);
+ flags++;
+ }
+
+ evt_length = strlen(evt_name);
+ if (evt_length >= MAX_EVENT_LENGTH)
+ return EVT_FAILED;
+ if (strpbrk(evt_name, "*?")) {
+ *strp += strlen(sys_name) + evt_length + 1; /* 1 == the ':' */
+ return parse_multiple_tracepoint_event(opt, sys_name, evt_name,
+ flags);
+ } else {
+ return parse_single_tracepoint_event(sys_name, evt_name,
+ evt_length, attr, strp);
+ }
+}
+
+static enum event_result
+parse_breakpoint_type(const char *type, const char **strp,
+ struct perf_event_attr *attr)
+{
+ int i;
+
+ for (i = 0; i < 3; i++) {
+ if (!type[i])
+ break;
+
+ switch (type[i]) {
+ case 'r':
+ attr->bp_type |= HW_BREAKPOINT_R;
+ break;
+ case 'w':
+ attr->bp_type |= HW_BREAKPOINT_W;
+ break;
+ case 'x':
+ attr->bp_type |= HW_BREAKPOINT_X;
+ break;
+ default:
+ return EVT_FAILED;
+ }
+ }
+ if (!attr->bp_type) /* Default */
+ attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
+
+ *strp = type + i;
+
+ return EVT_HANDLED;
+}
+
+static enum event_result
+parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
+{
+ const char *target;
+ const char *type;
+ char *endaddr;
+ u64 addr;
+ enum event_result err;
+
+ target = strchr(*strp, ':');
+ if (!target)
+ return EVT_FAILED;
+
+ if (strncmp(*strp, "mem", target - *strp) != 0)
+ return EVT_FAILED;
+
+ target++;
+
+ addr = strtoull(target, &endaddr, 0);
+ if (target == endaddr)
+ return EVT_FAILED;
+
+ attr->bp_addr = addr;
+ *strp = endaddr;
+
+ type = strchr(target, ':');
+
+ /* If no type is defined, just rw as default */
+ if (!type) {
+ attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
+ } else {
+ err = parse_breakpoint_type(++type, strp, attr);
+ if (err == EVT_FAILED)
+ return EVT_FAILED;
+ }
+
+ /*
+ * We should find a nice way to override the access length
+ * Provide some defaults for now
+ */
+ if (attr->bp_type == HW_BREAKPOINT_X)
+ attr->bp_len = sizeof(long);
+ else
+ attr->bp_len = HW_BREAKPOINT_LEN_4;
+
+ attr->type = PERF_TYPE_BREAKPOINT;
+
+ return EVT_HANDLED;
+}
+
+static int check_events(const char *str, unsigned int i)
+{
+ int n;
+
+ n = strlen(event_symbols[i].symbol);
+ if (!strncasecmp(str, event_symbols[i].symbol, n))
+ return n;
+
+ n = strlen(event_symbols[i].alias);
+ if (n) {
+ if (!strncasecmp(str, event_symbols[i].alias, n))
+ return n;
+ }
+
+ return 0;
+}
+
+static enum event_result
+parse_symbolic_event(const char **strp, struct perf_event_attr *attr)
+{
+ const char *str = *strp;
+ unsigned int i;
+ int n;
+
+ for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
+ n = check_events(str, i);
+ if (n > 0) {
+ attr->type = event_symbols[i].type;
+ attr->config = event_symbols[i].config;
+ *strp = str + n;
+ return EVT_HANDLED;
+ }
+ }
+ return EVT_FAILED;
+}
+
+static enum event_result
+parse_raw_event(const char **strp, struct perf_event_attr *attr)
+{
+ const char *str = *strp;
+ u64 config;
+ int n;
+
+ if (*str != 'r')
+ return EVT_FAILED;
+ n = hex2u64(str + 1, &config);
+ if (n > 0) {
+ *strp = str + n + 1;
+ attr->type = PERF_TYPE_RAW;
+ attr->config = config;
+ return EVT_HANDLED;
+ }
+ return EVT_FAILED;
+}
+
+static enum event_result
+parse_numeric_event(const char **strp, struct perf_event_attr *attr)
+{
+ const char *str = *strp;
+ char *endp;
+ unsigned long type;
+ u64 config;
+
+ type = strtoul(str, &endp, 0);
+ if (endp > str && type < PERF_TYPE_MAX && *endp == ':') {
+ str = endp + 1;
+ config = strtoul(str, &endp, 0);
+ if (endp > str) {
+ attr->type = type;
+ attr->config = config;
+ *strp = endp;
+ return EVT_HANDLED;
+ }
+ }
+ return EVT_FAILED;
+}
+
+static int
+parse_event_modifier(const char **strp, struct perf_event_attr *attr)
+{
+ const char *str = *strp;
+ int exclude = 0;
+ int eu = 0, ek = 0, eh = 0, precise = 0;
+
+ if (!*str)
+ return 0;
+
+ if (*str == ',')
+ return 0;
+
+ if (*str++ != ':')
+ return -1;
+
+ 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 == 'p') {
+ precise++;
+ } else
+ break;
+
+ ++str;
+ }
+ if (str < *strp + 2)
+ return -1;
+
+ *strp = str;
+
+ attr->exclude_user = eu;
+ attr->exclude_kernel = ek;
+ attr->exclude_hv = eh;
+ attr->precise_ip = precise;
+
+ return 0;
+}
+
+/*
+ * Each event can have multiple symbolic names.
+ * Symbolic names are (almost) exactly matched.
+ */
+static enum event_result
+parse_event_symbols(const struct option *opt, const char **str,
+ struct perf_event_attr *attr)
+{
+ enum event_result ret;
+
+ ret = parse_tracepoint_event(opt, str, attr);
+ if (ret != EVT_FAILED)
+ goto modifier;
+
+ ret = parse_raw_event(str, attr);
+ if (ret != EVT_FAILED)
+ goto modifier;
+
+ ret = parse_numeric_event(str, attr);
+ if (ret != EVT_FAILED)
+ goto modifier;
+
+ ret = parse_symbolic_event(str, attr);
+ if (ret != EVT_FAILED)
+ goto modifier;
+
+ ret = parse_generic_hw_event(str, attr);
+ if (ret != EVT_FAILED)
+ goto modifier;
+
+ ret = parse_breakpoint_event(str, attr);
+ if (ret != EVT_FAILED)
+ goto modifier;
+
+ fprintf(stderr, "invalid or unsupported event: '%s'\n", *str);
+ fprintf(stderr, "Run 'perf list' for a list of valid events\n");
+ return EVT_FAILED;
+
+modifier:
+ if (parse_event_modifier(str, attr) < 0) {
+ fprintf(stderr, "invalid event modifier: '%s'\n", *str);
+ fprintf(stderr, "Run 'perf list' for a list of valid events and modifiers\n");
+
+ return EVT_FAILED;
+ }
+
+ return ret;
+}
+
+int parse_events(const struct option *opt, const char *str, int unset __used)
+{
+ struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+ struct perf_event_attr attr;
+ enum event_result ret;
+ const char *ostr;
+
+ for (;;) {
+ ostr = str;
+ memset(&attr, 0, sizeof(attr));
+ ret = parse_event_symbols(opt, &str, &attr);
+ if (ret == EVT_FAILED)
+ return -1;
+
+ if (!(*str == 0 || *str == ',' || isspace(*str)))
+ return -1;
+
+ if (ret != EVT_HANDLED_ALL) {
+ struct perf_evsel *evsel;
+ evsel = perf_evsel__new(&attr, evlist->nr_entries);
+ if (evsel == NULL)
+ return -1;
+ perf_evlist__add(evlist, evsel);
+
+ evsel->name = calloc(str - ostr + 1, 1);
+ if (!evsel->name)
+ return -1;
+ strncpy(evsel->name, ostr, str - ostr);
+ }
+
+ if (*str == 0)
+ break;
+ if (*str == ',')
+ ++str;
+ while (isspace(*str))
+ ++str;
+ }
+
+ return 0;
+}
+
+int parse_filter(const struct option *opt, const char *str,
+ int unset __used)
+{
+ struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+ struct perf_evsel *last = NULL;
+
+ if (evlist->nr_entries > 0)
+ last = list_entry(evlist->entries.prev, struct perf_evsel, node);
+
+ if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
+ fprintf(stderr,
+ "-F 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",
+};
+
+/*
+ * Print the events from <debugfs_mount_point>/tracing/events
+ */
+
+void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
+{
+ DIR *sys_dir, *evt_dir;
+ struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
+ char evt_path[MAXPATHLEN];
+ char dir_path[MAXPATHLEN];
+
+ if (debugfs_valid_mountpoint(debugfs_path))
+ return;
+
+ sys_dir = opendir(debugfs_path);
+ if (!sys_dir)
+ return;
+
+ 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", debugfs_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;
+
+ snprintf(evt_path, MAXPATHLEN, "%s:%s",
+ sys_dirent.d_name, evt_dirent.d_name);
+ printf(" %-50s [%s]\n", evt_path,
+ event_type_descriptors[PERF_TYPE_TRACEPOINT]);
+ }
+ closedir(evt_dir);
+ }
+ closedir(sys_dir);
+}
+
+/*
+ * 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];
+
+ if (debugfs_valid_mountpoint(debugfs_path))
+ return 0;
+
+ sys_dir = opendir(debugfs_path);
+ if (!sys_dir)
+ return 0;
+
+ for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+
+ snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_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;
+}
+
+void print_events_type(u8 type)
+{
+ struct event_symbol *syms = event_symbols;
+ unsigned int i;
+ char name[64];
+
+ for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
+ if (type != syms->type)
+ continue;
+
+ if (strlen(syms->alias))
+ snprintf(name, sizeof(name), "%s OR %s",
+ syms->symbol, syms->alias);
+ else
+ snprintf(name, sizeof(name), "%s", syms->symbol);
+
+ printf(" %-50s [%s]\n", name,
+ event_type_descriptors[type]);
+ }
+}
+
+int print_hwcache_events(const char *event_glob)
+{
+ unsigned int type, op, i, printed = 0;
+
+ 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 (!is_cache_op_valid(type, op))
+ continue;
+
+ for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
+ char *name = event_cache_name(type, op, i);
+
+ if (event_glob != NULL && !strglobmatch(name, event_glob))
+ continue;
+
+ printf(" %-50s [%s]\n", name,
+ event_type_descriptors[PERF_TYPE_HW_CACHE]);
+ ++printed;
+ }
+ }
+ }
+
+ return printed;
+}
+
+#define MAX_NAME_LEN 100
+
+/*
+ * Print the help text for the event symbols:
+ */
+void print_events(const char *event_glob)
+{
+ unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
+ struct event_symbol *syms = event_symbols;
+ char name[MAX_NAME_LEN];
+
+ printf("\n");
+ printf("List of pre-defined events (to be used in -e):\n");
+
+ for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
+ type = syms->type;
+
+ if (type != prev_type && printed) {
+ printf("\n");
+ printed = 0;
+ ntypes_printed++;
+ }
+
+ if (event_glob != NULL &&
+ !(strglobmatch(syms->symbol, event_glob) ||
+ (syms->alias && strglobmatch(syms->alias, event_glob))))
+ continue;
+
+ if (strlen(syms->alias))
+ snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
+ else
+ strncpy(name, syms->symbol, MAX_NAME_LEN);
+ printf(" %-50s [%s]\n", name,
+ event_type_descriptors[type]);
+
+ prev_type = type;
+ ++printed;
+ }
+
+ if (ntypes_printed) {
+ printed = 0;
+ printf("\n");
+ }
+ print_hwcache_events(event_glob);
+
+ if (event_glob != NULL)
+ return;
+
+ printf("\n");
+ printf(" %-50s [%s]\n",
+ "rNNN (see 'perf list --help' on how to encode it)",
+ event_type_descriptors[PERF_TYPE_RAW]);
+ printf("\n");
+
+ printf(" %-50s [%s]\n",
+ "mem:<addr>[:access]",
+ event_type_descriptors[PERF_TYPE_BREAKPOINT]);
+ printf("\n");
+
+ print_tracepoint_events(NULL, NULL);
+
+ exit(129);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 05:43:09 +0000