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#include "../perf.h"
#include "util.h"
#include "parse-options.h"
#include "parse-events.h"
#include "exec_cmd.h"
#include "string.h"
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
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[] = {
"CPU cycles",
"instructions",
"cache references",
"cache misses",
"branches",
"branch misses",
"bus cycles",
};
static char *sw_event_names[] = {
"cpu clock ticks",
"task clock ticks",
"pagefaults",
"context switches",
"CPU migrations",
"minor faults",
"major faults",
};
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_SOFTWARE:
if (config < PERF_SW_EVENTS_MAX)
return sw_event_names[config];
return "unknown-software";
default:
break;
}
return "unknown";
}
/*
* Each event can have multiple symbolic names.
* Symbolic names are (almost) exactly matched.
*/
static int match_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 -EINVAL;
}
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 = match_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;
}
/*
* Create the help text for the event symbols:
*/
void create_events_help(char *events_help_msg)
{
unsigned int i;
char *str;
str = events_help_msg;
str += sprintf(str,
"event name: [");
for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
int type, id;
type = event_symbols[i].type;
id = event_symbols[i].config;
if (i)
str += sprintf(str, "|");
str += sprintf(str, "%s",
event_symbols[i].symbol);
}
str += sprintf(str, "|rNNN]");
}
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