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linux/tools/perf/util/parse-events.c

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#include "../../../include/linux/hw_breakpoint.h"
#include "util.h"
#include "../perf.h"
#include "evlist.h"
#include "evsel.h"
#include "parse-options.h"
#include "parse-events.h"
#include "exec_cmd.h"
#include "string.h"
#include "symbol.h"
#include "cache.h"
#include "header.h"
#include "debugfs.h"
#include "parse-events-flex.h"
#include "pmu.h"
#define MAX_NAME_LEN 100
struct event_symbol {
u8 type;
u64 config;
const char *symbol;
const char *alias;
};
int parse_events_parse(struct list_head *list, struct list_head *list_tmp,
int *idx);
#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
static struct event_symbol event_symbols[] = {
{ CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
{ CHW(STALLED_CYCLES_FRONTEND), "stalled-cycles-frontend", "idle-cycles-frontend" },
{ CHW(STALLED_CYCLES_BACKEND), "stalled-cycles-backend", "idle-cycles-backend" },
{ CHW(INSTRUCTIONS), "instructions", "" },
{ CHW(CACHE_REFERENCES), "cache-references", "" },
{ CHW(CACHE_MISSES), "cache-misses", "" },
{ CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
{ CHW(BRANCH_MISSES), "branch-misses", "" },
{ CHW(BUS_CYCLES), "bus-cycles", "" },
{ CHW(REF_CPU_CYCLES), "ref-cycles", "" },
{ CSW(CPU_CLOCK), "cpu-clock", "" },
{ CSW(TASK_CLOCK), "task-clock", "" },
{ CSW(PAGE_FAULTS), "page-faults", "faults" },
{ CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
{ CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
{ CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
{ CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
{ CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
{ CSW(EMULATION_FAULTS), "emulation-faults", "" },
};
#define __PERF_EVENT_FIELD(config, name) \
((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
static const char *hw_event_names[PERF_COUNT_HW_MAX] = {
"cycles",
"instructions",
"cache-references",
"cache-misses",
"branches",
"branch-misses",
"bus-cycles",
"stalled-cycles-frontend",
"stalled-cycles-backend",
"ref-cycles",
};
static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
"cpu-clock",
"task-clock",
"page-faults",
"context-switches",
"CPU-migrations",
"minor-faults",
"major-faults",
"alignment-faults",
"emulation-faults",
};
#define MAX_ALIASES 8
static const char *hw_cache[PERF_COUNT_HW_CACHE_MAX][MAX_ALIASES] = {
{ "L1-dcache", "l1-d", "l1d", "L1-data", },
{ "L1-icache", "l1-i", "l1i", "L1-instruction", },
{ "LLC", "L2", },
{ "dTLB", "d-tlb", "Data-TLB", },
{ "iTLB", "i-tlb", "Instruction-TLB", },
{ "branch", "branches", "bpu", "btb", "bpc", },
{ "node", },
};
static const char *hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][MAX_ALIASES] = {
{ "load", "loads", "read", },
{ "store", "stores", "write", },
{ "prefetch", "prefetches", "speculative-read", "speculative-load", },
};
static const char *hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
[MAX_ALIASES] = {
{ "refs", "Reference", "ops", "access", },
{ "misses", "miss", },
};
#define C(x) PERF_COUNT_HW_CACHE_##x
#define CACHE_READ (1 << C(OP_READ))
#define CACHE_WRITE (1 << C(OP_WRITE))
#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
#define COP(x) (1 << x)
/*
* cache operartion stat
* L1I : Read and prefetch only
* ITLB and BPU : Read-only
*/
static unsigned long hw_cache_stat[C(MAX)] = {
[C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
[C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
[C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
[C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
[C(ITLB)] = (CACHE_READ),
[C(BPU)] = (CACHE_READ),
[C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
};
#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
if (sys_dirent.d_type == DT_DIR && \
(strcmp(sys_dirent.d_name, ".")) && \
(strcmp(sys_dirent.d_name, "..")))
static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
{
char evt_path[MAXPATHLEN];
int fd;
snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
sys_dir->d_name, evt_dir->d_name);
fd = open(evt_path, O_RDONLY);
if (fd < 0)
return -EINVAL;
close(fd);
return 0;
}
#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
if (evt_dirent.d_type == DT_DIR && \
(strcmp(evt_dirent.d_name, ".")) && \
(strcmp(evt_dirent.d_name, "..")) && \
(!tp_event_has_id(&sys_dirent, &evt_dirent)))
#define MAX_EVENT_LENGTH 512
struct tracepoint_path *tracepoint_id_to_path(u64 config)
{
struct tracepoint_path *path = NULL;
DIR *sys_dir, *evt_dir;
struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
char id_buf[24];
int fd;
u64 id;
char evt_path[MAXPATHLEN];
char dir_path[MAXPATHLEN];
if (debugfs_valid_mountpoint(tracing_events_path))
return NULL;
sys_dir = opendir(tracing_events_path);
if (!sys_dir)
return NULL;
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/id", dir_path,
evt_dirent.d_name);
fd = open(evt_path, O_RDONLY);
if (fd < 0)
continue;
if (read(fd, id_buf, sizeof(id_buf)) < 0) {
close(fd);
continue;
}
close(fd);
id = atoll(id_buf);
if (id == config) {
closedir(evt_dir);
closedir(sys_dir);
path = zalloc(sizeof(*path));
path->system = malloc(MAX_EVENT_LENGTH);
if (!path->system) {
free(path);
return NULL;
}
path->name = malloc(MAX_EVENT_LENGTH);
if (!path->name) {
free(path->system);
free(path);
return NULL;
}
strncpy(path->system, sys_dirent.d_name,
MAX_EVENT_LENGTH);
strncpy(path->name, evt_dirent.d_name,
MAX_EVENT_LENGTH);
return path;
}
}
closedir(evt_dir);
}
closedir(sys_dir);
return NULL;
}
#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
static const char *tracepoint_id_to_name(u64 config)
{
static char buf[TP_PATH_LEN];
struct tracepoint_path *path;
path = tracepoint_id_to_path(config);
if (path) {
snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
free(path->name);
free(path->system);
free(path);
} else
snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
return buf;
}
static int is_cache_op_valid(u8 cache_type, u8 cache_op)
{
if (hw_cache_stat[cache_type] & COP(cache_op))
return 1; /* valid */
else
return 0; /* invalid */
}
static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
{
static char name[50];
if (cache_result) {
sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
hw_cache_op[cache_op][0],
hw_cache_result[cache_result][0]);
} else {
sprintf(name, "%s-%s", hw_cache[cache_type][0],
hw_cache_op[cache_op][1]);
}
return name;
}
const char *event_type(int type)
{
switch (type) {
case PERF_TYPE_HARDWARE:
return "hardware";
case PERF_TYPE_SOFTWARE:
return "software";
case PERF_TYPE_TRACEPOINT:
return "tracepoint";
case PERF_TYPE_HW_CACHE:
return "hardware-cache";
default:
break;
}
return "unknown";
}
const char *event_name(struct perf_evsel *evsel)
{
u64 config = evsel->attr.config;
int type = evsel->attr.type;
if (evsel->name)
return evsel->name;
return __event_name(type, config);
}
const char *__event_name(int type, u64 config)
{
static char buf[32];
if (type == PERF_TYPE_RAW) {
sprintf(buf, "raw 0x%" PRIx64, config);
return buf;
}
switch (type) {
case PERF_TYPE_HARDWARE:
if (config < PERF_COUNT_HW_MAX && hw_event_names[config])
return hw_event_names[config];
return "unknown-hardware";
case PERF_TYPE_HW_CACHE: {
u8 cache_type, cache_op, cache_result;
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";
if (!is_cache_op_valid(cache_type, cache_op))
return "invalid-cache";
return event_cache_name(cache_type, cache_op, cache_result);
}
case PERF_TYPE_SOFTWARE:
if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
return sw_event_names[config];
return "unknown-software";
case PERF_TYPE_TRACEPOINT:
return tracepoint_id_to_name(config);
default:
break;
}
return "unknown";
}
static int add_event(struct list_head *list, int *idx,
struct perf_event_attr *attr, char *name)
{
struct perf_evsel *evsel;
event_attr_init(attr);
evsel = perf_evsel__new(attr, (*idx)++);
if (!evsel)
return -ENOMEM;
list_add_tail(&evsel->node, list);
evsel->name = strdup(name);
return 0;
}
static int parse_aliases(char *str, const char *names[][MAX_ALIASES], int size)
{
int i, j;
int n, longest = -1;
for (i = 0; i < size; i++) {
for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
n = strlen(names[i][j]);
if (n > longest && !strncasecmp(str, names[i][j], n))
longest = n;
}
if (longest > 0)
return i;
}
return -1;
}
int parse_events_add_cache(struct list_head *list, int *idx,
char *type, char *op_result1, char *op_result2)
{
struct perf_event_attr attr;
char name[MAX_NAME_LEN];
int cache_type = -1, cache_op = -1, cache_result = -1;
char *op_result[2] = { op_result1, op_result2 };
int i, n;
/*
* No fallback - if we cannot get a clear cache type
* then bail out:
*/
cache_type = parse_aliases(type, hw_cache,
PERF_COUNT_HW_CACHE_MAX);
if (cache_type == -1)
return -EINVAL;
n = snprintf(name, MAX_NAME_LEN, "%s", type);
for (i = 0; (i < 2) && (op_result[i]); i++) {
char *str = op_result[i];
snprintf(name + n, MAX_NAME_LEN - n, "-%s\n", str);
if (cache_op == -1) {
cache_op = parse_aliases(str, hw_cache_op,
PERF_COUNT_HW_CACHE_OP_MAX);
if (cache_op >= 0) {
if (!is_cache_op_valid(cache_type, cache_op))
return -EINVAL;
continue;
}
}
if (cache_result == -1) {
cache_result = parse_aliases(str, hw_cache_result,
PERF_COUNT_HW_CACHE_RESULT_MAX);
if (cache_result >= 0)
continue;
}
}
/*
* Fall back to reads:
*/
if (cache_op == -1)
cache_op = PERF_COUNT_HW_CACHE_OP_READ;
/*
* Fall back to accesses:
*/
if (cache_result == -1)
cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
memset(&attr, 0, sizeof(attr));
attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
attr.type = PERF_TYPE_HW_CACHE;
return add_event(list, idx, &attr, name);
}
static int add_tracepoint(struct list_head *list, int *idx,
char *sys_name, char *evt_name)
{
struct perf_event_attr attr;
char name[MAX_NAME_LEN];
char evt_path[MAXPATHLEN];
char id_buf[4];
u64 id;
int fd;
snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
sys_name, evt_name);
fd = open(evt_path, O_RDONLY);
if (fd < 0)
return -1;
if (read(fd, id_buf, sizeof(id_buf)) < 0) {
close(fd);
return -1;
}
close(fd);
id = atoll(id_buf);
memset(&attr, 0, sizeof(attr));
attr.config = id;
attr.type = PERF_TYPE_TRACEPOINT;
attr.sample_type |= PERF_SAMPLE_RAW;
attr.sample_type |= PERF_SAMPLE_TIME;
attr.sample_type |= PERF_SAMPLE_CPU;
attr.sample_period = 1;
snprintf(name, MAX_NAME_LEN, "%s:%s", sys_name, evt_name);
return add_event(list, idx, &attr, name);
}
static int add_tracepoint_multi(struct list_head *list, int *idx,
char *sys_name, char *evt_name)
{
char evt_path[MAXPATHLEN];
struct dirent *evt_ent;
DIR *evt_dir;
int ret = 0;
snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
evt_dir = opendir(evt_path);
if (!evt_dir) {
perror("Can't open event dir");
return -1;
}
while (!ret && (evt_ent = readdir(evt_dir))) {
if (!strcmp(evt_ent->d_name, ".")
|| !strcmp(evt_ent->d_name, "..")
|| !strcmp(evt_ent->d_name, "enable")
|| !strcmp(evt_ent->d_name, "filter"))
continue;
if (!strglobmatch(evt_ent->d_name, evt_name))
continue;
ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
}
return ret;
}
int parse_events_add_tracepoint(struct list_head *list, int *idx,
char *sys, char *event)
{
int ret;
ret = debugfs_valid_mountpoint(tracing_events_path);
if (ret)
return ret;
return strpbrk(event, "*?") ?
add_tracepoint_multi(list, idx, sys, event) :
add_tracepoint(list, idx, sys, event);
}
static int
parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
{
int i;
for (i = 0; i < 3; i++) {
if (!type || !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 -EINVAL;
}
}
if (!attr->bp_type) /* Default */
attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
return 0;
}
int parse_events_add_breakpoint(struct list_head *list, int *idx,
void *ptr, char *type)
{
struct perf_event_attr attr;
char name[MAX_NAME_LEN];
memset(&attr, 0, sizeof(attr));
attr.bp_addr = (unsigned long) ptr;
if (parse_breakpoint_type(type, &attr))
return -EINVAL;
/*
* 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;
snprintf(name, MAX_NAME_LEN, "mem:%p:%s", ptr, type ? type : "rw");
return add_event(list, idx, &attr, name);
}
static int config_term(struct perf_event_attr *attr,
struct parse_events__term *term)
{
switch (term->type) {
case PARSE_EVENTS__TERM_TYPE_CONFIG:
attr->config = term->val.num;
break;
case PARSE_EVENTS__TERM_TYPE_CONFIG1:
attr->config1 = term->val.num;
break;
case PARSE_EVENTS__TERM_TYPE_CONFIG2:
attr->config2 = term->val.num;
break;
case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
attr->sample_period = term->val.num;
break;
case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
/*
* TODO uncomment when the field is available
* attr->branch_sample_type = term->val.num;
*/
break;
default:
return -EINVAL;
}
return 0;
}
static int config_attr(struct perf_event_attr *attr,
struct list_head *head, int fail)
{
struct parse_events__term *term;
list_for_each_entry(term, head, list)
if (config_term(attr, term) && fail)
return -EINVAL;
return 0;
}
int parse_events_add_numeric(struct list_head *list, int *idx,
unsigned long type, unsigned long config,
struct list_head *head_config)
{
struct perf_event_attr attr;
memset(&attr, 0, sizeof(attr));
attr.type = type;
attr.config = config;
if (head_config &&
config_attr(&attr, head_config, 1))
return -EINVAL;
return add_event(list, idx, &attr,
(char *) __event_name(type, config));
}
int parse_events_add_pmu(struct list_head *list, int *idx,
char *name, struct list_head *head_config)
{
struct perf_event_attr attr;
struct perf_pmu *pmu;
pmu = perf_pmu__find(name);
if (!pmu)
return -EINVAL;
memset(&attr, 0, sizeof(attr));
/*
* Configure hardcoded terms first, no need to check
* return value when called with fail == 0 ;)
*/
config_attr(&attr, head_config, 0);
if (perf_pmu__config(pmu, &attr, head_config))
return -EINVAL;
return add_event(list, idx, &attr, (char *) "pmu");
}
void parse_events_update_lists(struct list_head *list_event,
struct list_head *list_all)
{
/*
* Called for single event definition. Update the
* 'all event' list, and reinit the 'signle event'
* list, for next event definition.
*/
list_splice_tail(list_event, list_all);
INIT_LIST_HEAD(list_event);
}
int parse_events_modifier(struct list_head *list, char *str)
{
struct perf_evsel *evsel;
int exclude = 0, exclude_GH = 0;
int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0;
if (str == NULL)
return 0;
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;
}
/*
* precise ip:
*
* 0 - SAMPLE_IP can have arbitrary skid
* 1 - SAMPLE_IP must have constant skid
* 2 - SAMPLE_IP requested to have 0 skid
* 3 - SAMPLE_IP must have 0 skid
*
* See also PERF_RECORD_MISC_EXACT_IP
*/
if (precise > 3)
return -EINVAL;
list_for_each_entry(evsel, list, node) {
evsel->attr.exclude_user = eu;
evsel->attr.exclude_kernel = ek;
evsel->attr.exclude_hv = eh;
evsel->attr.precise_ip = precise;
evsel->attr.exclude_host = eH;
evsel->attr.exclude_guest = eG;
}
return 0;
}
int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
{
LIST_HEAD(list);
LIST_HEAD(list_tmp);
YY_BUFFER_STATE buffer;
int ret, idx = evlist->nr_entries;
buffer = parse_events__scan_string(str);
ret = parse_events_parse(&list, &list_tmp, &idx);
parse_events__flush_buffer(buffer);
parse_events__delete_buffer(buffer);
if (!ret) {
int entries = idx - evlist->nr_entries;
perf_evlist__splice_list_tail(evlist, &list, entries);
return 0;
}
/*
* There are 2 users - builtin-record and builtin-test objects.
* Both call perf_evlist__delete in case of error, so we dont
* need to bother.
*/
fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
fprintf(stderr, "Run 'perf list' for a list of valid events\n");
return ret;
}
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;
}
/*
* Print the help text for the event symbols:
*/
void print_events(const char *event_glob)
{
unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
struct event_symbol *syms = event_symbols;
char name[MAX_NAME_LEN];
printf("\n");
printf("List of pre-defined events (to be used in -e):\n");
for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
type = syms->type;
if (type != prev_type && printed) {
printf("\n");
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",
event_type_descriptors[PERF_TYPE_RAW]);
printf(" %-50s [%s]\n",
"cpu/t1=v1[,t2=v2,t3 ...]/modifier",
event_type_descriptors[PERF_TYPE_RAW]);
printf(" (see 'perf list --help' on how to encode it)\n");
printf("\n");
printf(" %-50s [%s]\n",
"mem:<addr>[:access]",
event_type_descriptors[PERF_TYPE_BREAKPOINT]);
printf("\n");
print_tracepoint_events(NULL, NULL);
}
int parse_events__is_hardcoded_term(struct parse_events__term *term)
{
return term->type <= PARSE_EVENTS__TERM_TYPE_HARDCODED_MAX;
}
int parse_events__new_term(struct parse_events__term **_term, int type,
char *config, char *str, long num)
{
struct parse_events__term *term;
term = zalloc(sizeof(*term));
if (!term)
return -ENOMEM;
INIT_LIST_HEAD(&term->list);
term->type = type;
term->config = config;
switch (type) {
case PARSE_EVENTS__TERM_TYPE_CONFIG:
case PARSE_EVENTS__TERM_TYPE_CONFIG1:
case PARSE_EVENTS__TERM_TYPE_CONFIG2:
case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
case PARSE_EVENTS__TERM_TYPE_NUM:
term->val.num = num;
break;
case PARSE_EVENTS__TERM_TYPE_STR:
term->val.str = str;
break;
default:
return -EINVAL;
}
*_term = term;
return 0;
}
void parse_events__free_terms(struct list_head *terms)
{
struct parse_events__term *term, *h;
list_for_each_entry_safe(term, h, terms, list)
free(term);
free(terms);
}
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