blob: 5a72586e1df04dfcc7295ba1eb122a5e0d58f8de [file] [log] [blame]
#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, HW_CPU_CYCLES), "cpu-cycles", },
{ C(HARDWARE, HW_CPU_CYCLES), "cycles", },
{ C(HARDWARE, HW_INSTRUCTIONS), "instructions", },
{ C(HARDWARE, HW_CACHE_REFERENCES), "cache-references", },
{ C(HARDWARE, HW_CACHE_MISSES), "cache-misses", },
{ C(HARDWARE, HW_BRANCH_INSTRUCTIONS),"branch-instructions", },
{ C(HARDWARE, HW_BRANCH_INSTRUCTIONS),"branches", },
{ C(HARDWARE, HW_BRANCH_MISSES), "branch-misses", },
{ C(HARDWARE, HW_BUS_CYCLES), "bus-cycles", },
{ C(SOFTWARE, SW_CPU_CLOCK), "cpu-clock", },
{ C(SOFTWARE, SW_TASK_CLOCK), "task-clock", },
{ C(SOFTWARE, SW_PAGE_FAULTS), "page-faults", },
{ C(SOFTWARE, SW_PAGE_FAULTS), "faults", },
{ C(SOFTWARE, SW_PAGE_FAULTS_MIN), "minor-faults", },
{ C(SOFTWARE, SW_PAGE_FAULTS_MAJ), "major-faults", },
{ C(SOFTWARE, SW_CONTEXT_SWITCHES), "context-switches", },
{ C(SOFTWARE, SW_CONTEXT_SWITCHES), "cs", },
{ C(SOFTWARE, SW_CPU_MIGRATIONS), "cpu-migrations", },
{ C(SOFTWARE, SW_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-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_COUNT_HW_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_COUNT_SW_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 -1;
}
static int parse_generic_hw_symbols(const char *str, struct perf_counter_attr *attr)
{
int 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_op == -1)
cache_op = 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);
}