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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;
__u64 event_id[MAX_COUNTERS] = { };
int event_mask[MAX_COUNTERS];
struct event_symbol {
__u64 event;
char *symbol;
};
static struct event_symbol event_symbols[] = {
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cpu-cycles", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cycles", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_INSTRUCTIONS), "instructions", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_REFERENCES), "cache-references", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_MISSES), "cache-misses", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branch-instructions", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branches", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_MISSES), "branch-misses", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BUS_CYCLES), "bus-cycles", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_CLOCK), "cpu-clock", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK), "task-clock", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "page-faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MIN), "minor-faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MAJ), "major-faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "context-switches", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "cs", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "cpu-migrations", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_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 ctr)
{
__u64 config = event_id[ctr];
int type = PERF_COUNTER_TYPE(config);
int id = PERF_COUNTER_ID(config);
static char buf[32];
if (PERF_COUNTER_RAW(config)) {
sprintf(buf, "raw 0x%llx", PERF_COUNTER_CONFIG(config));
return buf;
}
switch (type) {
case PERF_TYPE_HARDWARE:
if (id < PERF_HW_EVENTS_MAX)
return hw_event_names[id];
return "unknown-hardware";
case PERF_TYPE_SOFTWARE:
if (id < PERF_SW_EVENTS_MAX)
return sw_event_names[id];
return "unknown-software";
default:
break;
}
return "unknown";
}
/*
* Each event can have multiple symbolic names.
* Symbolic names are (almost) exactly matched.
*/
static __u64 match_event_symbols(const char *str)
{
__u64 config, id;
int type;
unsigned int i;
const char *sep, *pstr;
if (str[0] == 'r' && hex2u64(str + 1, &config) > 0)
return config | PERF_COUNTER_RAW_MASK;
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'))
event_mask[nr_counters] |= EVENT_MASK_USER;
if (strchr(pstr, 'u'))
event_mask[nr_counters] |= EVENT_MASK_KERNEL;
}
return EID(type, id);
}
for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
if (!strncmp(str, event_symbols[i].symbol,
strlen(event_symbols[i].symbol)))
return event_symbols[i].event;
}
return ~0ULL;
}
int parse_events(const struct option *opt, const char *str, int unset)
{
__u64 config;
again:
if (nr_counters == MAX_COUNTERS)
return -1;
config = match_event_symbols(str);
if (config == ~0ULL)
return -1;
event_id[nr_counters] = config;
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;
__u64 e;
str = events_help_msg;
str += sprintf(str,
"event name: [");
for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
int type, id;
e = event_symbols[i].event;
type = PERF_COUNTER_TYPE(e);
id = PERF_COUNTER_ID(e);
if (i)
str += sprintf(str, "|");
str += sprintf(str, "%s",
event_symbols[i].symbol);
}
str += sprintf(str, "|rNNN]");
}
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