From 864709302a80f26fa9da3be5b47304f0b8bae192 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sat, 6 Jun 2009 20:33:43 +0200 Subject: perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ Several people have suggested that 'perf' has become a full-fledged tool that should be moved out of Documentation/. Move it to the (new) tools/ directory. Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo LKML-Reference: Signed-off-by: Ingo Molnar --- tools/perf/util/parse-events.c | 316 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 316 insertions(+) create mode 100644 tools/perf/util/parse-events.c (limited to 'tools/perf/util/parse-events.c') diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c new file mode 100644 index 00000000000..e0820b4388a --- /dev/null +++ b/tools/perf/util/parse-events.c @@ -0,0 +1,316 @@ + +#include "../perf.h" +#include "util.h" +#include "parse-options.h" +#include "parse-events.h" +#include "exec_cmd.h" +#include "string.h" + +extern char *strcasestr(const char *haystack, const char *needle); + +int nr_counters; + +struct perf_counter_attr attrs[MAX_COUNTERS]; + +struct event_symbol { + __u8 type; + __u64 config; + char *symbol; +}; + +#define C(x, y) .type = PERF_TYPE_##x, .config = PERF_COUNT_##y +#define CR(x, y) .type = PERF_TYPE_##x, .config = y + +static struct event_symbol event_symbols[] = { + { C(HARDWARE, CPU_CYCLES), "cpu-cycles", }, + { C(HARDWARE, CPU_CYCLES), "cycles", }, + { C(HARDWARE, INSTRUCTIONS), "instructions", }, + { C(HARDWARE, CACHE_REFERENCES), "cache-references", }, + { C(HARDWARE, CACHE_MISSES), "cache-misses", }, + { C(HARDWARE, BRANCH_INSTRUCTIONS), "branch-instructions", }, + { C(HARDWARE, BRANCH_INSTRUCTIONS), "branches", }, + { C(HARDWARE, BRANCH_MISSES), "branch-misses", }, + { C(HARDWARE, BUS_CYCLES), "bus-cycles", }, + + { C(SOFTWARE, CPU_CLOCK), "cpu-clock", }, + { C(SOFTWARE, TASK_CLOCK), "task-clock", }, + { C(SOFTWARE, PAGE_FAULTS), "page-faults", }, + { C(SOFTWARE, PAGE_FAULTS), "faults", }, + { C(SOFTWARE, PAGE_FAULTS_MIN), "minor-faults", }, + { C(SOFTWARE, PAGE_FAULTS_MAJ), "major-faults", }, + { C(SOFTWARE, CONTEXT_SWITCHES), "context-switches", }, + { C(SOFTWARE, CONTEXT_SWITCHES), "cs", }, + { C(SOFTWARE, CPU_MIGRATIONS), "cpu-migrations", }, + { C(SOFTWARE, CPU_MIGRATIONS), "migrations", }, +}; + +#define __PERF_COUNTER_FIELD(config, name) \ + ((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT) + +#define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW) +#define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG) +#define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE) +#define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT) + +static char *hw_event_names[] = { + "cycles", + "instructions", + "cache-references", + "cache-misses", + "branches", + "branch-misses", + "bus-cycles", +}; + +static char *sw_event_names[] = { + "cpu-clock-ticks", + "task-clock-ticks", + "page-faults", + "context-switches", + "CPU-migrations", + "minor-faults", + "major-faults", +}; + +#define MAX_ALIASES 8 + +static char *hw_cache [][MAX_ALIASES] = { + { "L1-data" , "l1-d", "l1d", "l1" }, + { "L1-instruction" , "l1-i", "l1i" }, + { "L2" , "l2" }, + { "Data-TLB" , "dtlb", "d-tlb" }, + { "Instruction-TLB" , "itlb", "i-tlb" }, + { "Branch" , "bpu" , "btb", "bpc" }, +}; + +static char *hw_cache_op [][MAX_ALIASES] = { + { "Load" , "read" }, + { "Store" , "write" }, + { "Prefetch" , "speculative-read", "speculative-load" }, +}; + +static char *hw_cache_result [][MAX_ALIASES] = { + { "Reference" , "ops", "access" }, + { "Miss" }, +}; + +char *event_name(int counter) +{ + __u64 config = attrs[counter].config; + int type = attrs[counter].type; + static char buf[32]; + + if (attrs[counter].type == PERF_TYPE_RAW) { + sprintf(buf, "raw 0x%llx", config); + return buf; + } + + switch (type) { + case PERF_TYPE_HARDWARE: + if (config < PERF_HW_EVENTS_MAX) + return hw_event_names[config]; + return "unknown-hardware"; + + case PERF_TYPE_HW_CACHE: { + __u8 cache_type, cache_op, cache_result; + static char name[100]; + + 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"; + + sprintf(name, "%s-Cache-%s-%ses", + hw_cache[cache_type][0], + hw_cache_op[cache_op][0], + hw_cache_result[cache_result][0]); + + return name; + } + + case PERF_TYPE_SOFTWARE: + if (config < PERF_SW_EVENTS_MAX) + return sw_event_names[config]; + return "unknown-software"; + + default: + break; + } + + return "unknown"; +} + +static int parse_aliases(const char *str, char *names[][MAX_ALIASES], int size) +{ + int i, j; + + for (i = 0; i < size; i++) { + for (j = 0; j < MAX_ALIASES; j++) { + if (!names[i][j]) + break; + if (strcasestr(str, names[i][j])) + return i; + } + } + + return 0; +} + +static int parse_generic_hw_symbols(const char *str, struct perf_counter_attr *attr) +{ + __u8 cache_type = -1, cache_op = 0, cache_result = 0; + + cache_type = parse_aliases(str, 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 -EINVAL; + + cache_op = parse_aliases(str, hw_cache_op, PERF_COUNT_HW_CACHE_OP_MAX); + /* + * Fall back to reads: + */ + if (cache_type == -1) + cache_type = PERF_COUNT_HW_CACHE_OP_READ; + + cache_result = parse_aliases(str, hw_cache_result, + PERF_COUNT_HW_CACHE_RESULT_MAX); + /* + * 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; + + return 0; +} + +/* + * Each event can have multiple symbolic names. + * Symbolic names are (almost) exactly matched. + */ +static int parse_event_symbols(const char *str, struct perf_counter_attr *attr) +{ + __u64 config, id; + int type; + unsigned int i; + const char *sep, *pstr; + + if (str[0] == 'r' && hex2u64(str + 1, &config) > 0) { + attr->type = PERF_TYPE_RAW; + attr->config = config; + + return 0; + } + + pstr = str; + sep = strchr(pstr, ':'); + if (sep) { + type = atoi(pstr); + pstr = sep + 1; + id = atoi(pstr); + sep = strchr(pstr, ':'); + if (sep) { + pstr = sep + 1; + if (strchr(pstr, 'k')) + attr->exclude_user = 1; + if (strchr(pstr, 'u')) + attr->exclude_kernel = 1; + } + attr->type = type; + attr->config = id; + + return 0; + } + + for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { + if (!strncmp(str, event_symbols[i].symbol, + strlen(event_symbols[i].symbol))) { + + attr->type = event_symbols[i].type; + attr->config = event_symbols[i].config; + + return 0; + } + } + + return parse_generic_hw_symbols(str, attr); +} + +int parse_events(const struct option *opt, const char *str, int unset) +{ + struct perf_counter_attr attr; + int ret; + + memset(&attr, 0, sizeof(attr)); +again: + if (nr_counters == MAX_COUNTERS) + return -1; + + ret = parse_event_symbols(str, &attr); + if (ret < 0) + return ret; + + attrs[nr_counters] = attr; + nr_counters++; + + str = strstr(str, ","); + if (str) { + str++; + goto again; + } + + return 0; +} + +static const char * const event_type_descriptors[] = { + "", + "Hardware event", + "Software event", + "Tracepoint event", + "Hardware cache event", +}; + +/* + * Print the help text for the event symbols: + */ +void print_events(void) +{ + struct event_symbol *syms = event_symbols; + unsigned int i, type, prev_type = -1; + + fprintf(stderr, "\n"); + fprintf(stderr, "List of pre-defined events (to be used in -e):\n"); + + for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) { + type = syms->type + 1; + if (type > ARRAY_SIZE(event_type_descriptors)) + type = 0; + + if (type != prev_type) + fprintf(stderr, "\n"); + + fprintf(stderr, " %-30s [%s]\n", syms->symbol, + event_type_descriptors[type]); + + prev_type = type; + } + + fprintf(stderr, "\n"); + fprintf(stderr, " %-30s [raw hardware event descriptor]\n", + "rNNN"); + fprintf(stderr, "\n"); + + exit(129); +} -- cgit v1.2.3