1116 lines
25 KiB
C
1116 lines
25 KiB
C
#include "../../../include/linux/hw_breakpoint.h"
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#include "util.h"
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#include "../perf.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "parse-options.h"
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#include "parse-events.h"
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#include "exec_cmd.h"
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#include "string.h"
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#include "symbol.h"
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#include "cache.h"
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#include "header.h"
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#include "debugfs.h"
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struct event_symbol {
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u8 type;
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u64 config;
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const char *symbol;
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const char *alias;
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};
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enum event_result {
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EVT_FAILED,
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EVT_HANDLED,
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EVT_HANDLED_ALL
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};
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#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
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#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
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static struct event_symbol event_symbols[] = {
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{ CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
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{ CHW(STALLED_CYCLES_FRONTEND), "stalled-cycles-frontend", "idle-cycles-frontend" },
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{ CHW(STALLED_CYCLES_BACKEND), "stalled-cycles-backend", "idle-cycles-backend" },
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{ CHW(INSTRUCTIONS), "instructions", "" },
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{ CHW(CACHE_REFERENCES), "cache-references", "" },
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{ CHW(CACHE_MISSES), "cache-misses", "" },
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{ CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
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{ CHW(BRANCH_MISSES), "branch-misses", "" },
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{ CHW(BUS_CYCLES), "bus-cycles", "" },
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{ CHW(REF_CPU_CYCLES), "ref-cycles", "" },
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{ CSW(CPU_CLOCK), "cpu-clock", "" },
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{ CSW(TASK_CLOCK), "task-clock", "" },
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{ CSW(PAGE_FAULTS), "page-faults", "faults" },
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{ CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
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{ CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
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{ CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
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{ CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
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{ CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
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{ CSW(EMULATION_FAULTS), "emulation-faults", "" },
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};
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#define __PERF_EVENT_FIELD(config, name) \
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((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
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#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
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#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
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#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
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#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
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static const char *hw_event_names[PERF_COUNT_HW_MAX] = {
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"cycles",
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"instructions",
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"cache-references",
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"cache-misses",
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"branches",
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"branch-misses",
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"bus-cycles",
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"stalled-cycles-frontend",
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"stalled-cycles-backend",
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"ref-cycles",
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};
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static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
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"cpu-clock",
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"task-clock",
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"page-faults",
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"context-switches",
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"CPU-migrations",
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"minor-faults",
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"major-faults",
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"alignment-faults",
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"emulation-faults",
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};
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#define MAX_ALIASES 8
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static const char *hw_cache[PERF_COUNT_HW_CACHE_MAX][MAX_ALIASES] = {
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{ "L1-dcache", "l1-d", "l1d", "L1-data", },
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{ "L1-icache", "l1-i", "l1i", "L1-instruction", },
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{ "LLC", "L2", },
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{ "dTLB", "d-tlb", "Data-TLB", },
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{ "iTLB", "i-tlb", "Instruction-TLB", },
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{ "branch", "branches", "bpu", "btb", "bpc", },
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{ "node", },
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};
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static const char *hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][MAX_ALIASES] = {
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{ "load", "loads", "read", },
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{ "store", "stores", "write", },
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{ "prefetch", "prefetches", "speculative-read", "speculative-load", },
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};
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static const char *hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
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[MAX_ALIASES] = {
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{ "refs", "Reference", "ops", "access", },
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{ "misses", "miss", },
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};
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#define C(x) PERF_COUNT_HW_CACHE_##x
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#define CACHE_READ (1 << C(OP_READ))
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#define CACHE_WRITE (1 << C(OP_WRITE))
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#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
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#define COP(x) (1 << x)
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/*
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* cache operartion stat
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* L1I : Read and prefetch only
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* ITLB and BPU : Read-only
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*/
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static unsigned long hw_cache_stat[C(MAX)] = {
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[C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
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[C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
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[C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
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[C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
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[C(ITLB)] = (CACHE_READ),
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[C(BPU)] = (CACHE_READ),
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[C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
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};
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#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
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while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
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if (sys_dirent.d_type == DT_DIR && \
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(strcmp(sys_dirent.d_name, ".")) && \
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(strcmp(sys_dirent.d_name, "..")))
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static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
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{
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char evt_path[MAXPATHLEN];
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int fd;
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snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
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sys_dir->d_name, evt_dir->d_name);
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fd = open(evt_path, O_RDONLY);
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if (fd < 0)
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return -EINVAL;
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close(fd);
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return 0;
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}
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#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
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while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
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if (evt_dirent.d_type == DT_DIR && \
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(strcmp(evt_dirent.d_name, ".")) && \
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(strcmp(evt_dirent.d_name, "..")) && \
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(!tp_event_has_id(&sys_dirent, &evt_dirent)))
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#define MAX_EVENT_LENGTH 512
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struct tracepoint_path *tracepoint_id_to_path(u64 config)
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{
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struct tracepoint_path *path = NULL;
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DIR *sys_dir, *evt_dir;
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struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
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char id_buf[4];
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int fd;
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u64 id;
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char evt_path[MAXPATHLEN];
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char dir_path[MAXPATHLEN];
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if (debugfs_valid_mountpoint(tracing_events_path))
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return NULL;
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sys_dir = opendir(tracing_events_path);
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if (!sys_dir)
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return NULL;
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for_each_subsystem(sys_dir, sys_dirent, sys_next) {
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snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
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sys_dirent.d_name);
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evt_dir = opendir(dir_path);
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if (!evt_dir)
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continue;
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for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
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snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
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evt_dirent.d_name);
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fd = open(evt_path, O_RDONLY);
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if (fd < 0)
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continue;
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if (read(fd, id_buf, sizeof(id_buf)) < 0) {
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close(fd);
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continue;
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}
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close(fd);
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id = atoll(id_buf);
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if (id == config) {
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closedir(evt_dir);
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closedir(sys_dir);
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path = zalloc(sizeof(*path));
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path->system = malloc(MAX_EVENT_LENGTH);
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if (!path->system) {
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free(path);
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return NULL;
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}
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path->name = malloc(MAX_EVENT_LENGTH);
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if (!path->name) {
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free(path->system);
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free(path);
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return NULL;
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}
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strncpy(path->system, sys_dirent.d_name,
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MAX_EVENT_LENGTH);
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strncpy(path->name, evt_dirent.d_name,
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MAX_EVENT_LENGTH);
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return path;
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}
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}
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closedir(evt_dir);
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}
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closedir(sys_dir);
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return NULL;
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}
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#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
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static const char *tracepoint_id_to_name(u64 config)
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{
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static char buf[TP_PATH_LEN];
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struct tracepoint_path *path;
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path = tracepoint_id_to_path(config);
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if (path) {
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snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
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free(path->name);
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free(path->system);
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free(path);
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} else
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snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
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return buf;
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}
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static int is_cache_op_valid(u8 cache_type, u8 cache_op)
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{
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if (hw_cache_stat[cache_type] & COP(cache_op))
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return 1; /* valid */
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else
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return 0; /* invalid */
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}
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static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
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{
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static char name[50];
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if (cache_result) {
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sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
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hw_cache_op[cache_op][0],
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hw_cache_result[cache_result][0]);
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} else {
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sprintf(name, "%s-%s", hw_cache[cache_type][0],
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hw_cache_op[cache_op][1]);
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}
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return name;
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}
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const char *event_type(int type)
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{
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switch (type) {
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case PERF_TYPE_HARDWARE:
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return "hardware";
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case PERF_TYPE_SOFTWARE:
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return "software";
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case PERF_TYPE_TRACEPOINT:
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return "tracepoint";
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case PERF_TYPE_HW_CACHE:
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return "hardware-cache";
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default:
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break;
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}
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return "unknown";
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}
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const char *event_name(struct perf_evsel *evsel)
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{
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u64 config = evsel->attr.config;
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int type = evsel->attr.type;
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if (evsel->name)
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return evsel->name;
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return __event_name(type, config);
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}
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const char *__event_name(int type, u64 config)
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{
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static char buf[32];
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if (type == PERF_TYPE_RAW) {
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sprintf(buf, "raw 0x%" PRIx64, config);
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return buf;
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}
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switch (type) {
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case PERF_TYPE_HARDWARE:
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if (config < PERF_COUNT_HW_MAX && hw_event_names[config])
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return hw_event_names[config];
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return "unknown-hardware";
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case PERF_TYPE_HW_CACHE: {
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u8 cache_type, cache_op, cache_result;
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cache_type = (config >> 0) & 0xff;
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if (cache_type > PERF_COUNT_HW_CACHE_MAX)
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return "unknown-ext-hardware-cache-type";
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cache_op = (config >> 8) & 0xff;
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if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
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return "unknown-ext-hardware-cache-op";
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cache_result = (config >> 16) & 0xff;
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if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
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return "unknown-ext-hardware-cache-result";
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if (!is_cache_op_valid(cache_type, cache_op))
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return "invalid-cache";
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return event_cache_name(cache_type, cache_op, cache_result);
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}
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case PERF_TYPE_SOFTWARE:
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if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
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return sw_event_names[config];
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return "unknown-software";
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case PERF_TYPE_TRACEPOINT:
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return tracepoint_id_to_name(config);
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default:
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break;
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}
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return "unknown";
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}
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static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
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{
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int i, j;
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int n, longest = -1;
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for (i = 0; i < size; i++) {
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for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
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n = strlen(names[i][j]);
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if (n > longest && !strncasecmp(*str, names[i][j], n))
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longest = n;
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}
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if (longest > 0) {
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*str += longest;
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return i;
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}
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}
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return -1;
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}
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static enum event_result
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parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
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{
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const char *s = *str;
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int cache_type = -1, cache_op = -1, cache_result = -1;
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cache_type = parse_aliases(&s, hw_cache, PERF_COUNT_HW_CACHE_MAX);
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/*
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* No fallback - if we cannot get a clear cache type
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* then bail out:
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*/
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if (cache_type == -1)
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return EVT_FAILED;
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while ((cache_op == -1 || cache_result == -1) && *s == '-') {
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++s;
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if (cache_op == -1) {
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cache_op = parse_aliases(&s, hw_cache_op,
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PERF_COUNT_HW_CACHE_OP_MAX);
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if (cache_op >= 0) {
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if (!is_cache_op_valid(cache_type, cache_op))
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return EVT_FAILED;
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continue;
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}
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}
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if (cache_result == -1) {
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cache_result = parse_aliases(&s, hw_cache_result,
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PERF_COUNT_HW_CACHE_RESULT_MAX);
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if (cache_result >= 0)
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continue;
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}
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/*
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* Can't parse this as a cache op or result, so back up
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* to the '-'.
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*/
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--s;
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break;
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}
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/*
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* Fall back to reads:
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*/
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if (cache_op == -1)
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cache_op = PERF_COUNT_HW_CACHE_OP_READ;
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/*
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* Fall back to accesses:
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*/
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if (cache_result == -1)
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cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
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attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
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attr->type = PERF_TYPE_HW_CACHE;
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*str = s;
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return EVT_HANDLED;
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}
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static enum event_result
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parse_single_tracepoint_event(char *sys_name,
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const char *evt_name,
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unsigned int evt_length,
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struct perf_event_attr *attr,
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const char **strp)
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{
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char evt_path[MAXPATHLEN];
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char id_buf[4];
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u64 id;
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int fd;
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snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
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sys_name, evt_name);
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fd = open(evt_path, O_RDONLY);
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if (fd < 0)
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return EVT_FAILED;
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if (read(fd, id_buf, sizeof(id_buf)) < 0) {
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close(fd);
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return EVT_FAILED;
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}
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close(fd);
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id = atoll(id_buf);
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attr->config = id;
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attr->type = PERF_TYPE_TRACEPOINT;
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*strp += strlen(sys_name) + evt_length + 1; /* + 1 for the ':' */
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attr->sample_type |= PERF_SAMPLE_RAW;
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attr->sample_type |= PERF_SAMPLE_TIME;
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attr->sample_type |= PERF_SAMPLE_CPU;
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attr->sample_period = 1;
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return EVT_HANDLED;
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}
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/* sys + ':' + event + ':' + flags*/
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#define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128)
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static enum event_result
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parse_multiple_tracepoint_event(struct perf_evlist *evlist, char *sys_name,
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const char *evt_exp, char *flags)
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{
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char evt_path[MAXPATHLEN];
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struct dirent *evt_ent;
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DIR *evt_dir;
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snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
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evt_dir = opendir(evt_path);
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if (!evt_dir) {
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perror("Can't open event dir");
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return EVT_FAILED;
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}
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while ((evt_ent = readdir(evt_dir))) {
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char event_opt[MAX_EVOPT_LEN + 1];
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int len;
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if (!strcmp(evt_ent->d_name, ".")
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|| !strcmp(evt_ent->d_name, "..")
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|| !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(evlist, event_opt, 0))
|
|
return EVT_FAILED;
|
|
}
|
|
|
|
return EVT_HANDLED_ALL;
|
|
}
|
|
|
|
static enum event_result
|
|
parse_tracepoint_event(struct perf_evlist *evlist, 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(tracing_events_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(evlist, 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) {
|
|
const char *end = str + n + 1;
|
|
if (*end != '\0' && *end != ',' && *end != ':')
|
|
return EVT_FAILED;
|
|
|
|
*strp = end;
|
|
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, exclude_GH = 0;
|
|
int eu = 0, ek = 0, eh = 0, eH = 0, eG = 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 == '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 == '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;
|
|
attr->exclude_host = eH;
|
|
attr->exclude_guest = eG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Each event can have multiple symbolic names.
|
|
* Symbolic names are (almost) exactly matched.
|
|
*/
|
|
static enum event_result
|
|
parse_event_symbols(struct perf_evlist *evlist, const char **str,
|
|
struct perf_event_attr *attr)
|
|
{
|
|
enum event_result ret;
|
|
|
|
ret = parse_tracepoint_event(evlist, 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(struct perf_evlist *evlist , const char *str, int unset __used)
|
|
{
|
|
struct perf_event_attr attr;
|
|
enum event_result ret;
|
|
const char *ostr;
|
|
|
|
for (;;) {
|
|
ostr = str;
|
|
memset(&attr, 0, sizeof(attr));
|
|
event_attr_init(&attr);
|
|
ret = parse_event_symbols(evlist, &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_events_option(const struct option *opt, const char *str,
|
|
int unset __used)
|
|
{
|
|
struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
|
|
return parse_events(evlist, str, unset);
|
|
}
|
|
|
|
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(tracing_events_path))
|
|
return;
|
|
|
|
sys_dir = opendir(tracing_events_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", 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;
|
|
|
|
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(tracing_events_path))
|
|
return 0;
|
|
|
|
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;
|
|
}
|
|
|
|
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:
|
|
*/
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|
void print_events(const char *event_glob)
|
|
{
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|
unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
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|
struct event_symbol *syms = event_symbols;
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|
char name[MAX_NAME_LEN];
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|
|
|
printf("\n");
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|
printf("List of pre-defined events (to be used in -e):\n");
|
|
|
|
for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
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|
type = syms->type;
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|
|
|
if (type != prev_type && printed) {
|
|
printf("\n");
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|
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);
|
|
}
|