linux/tools/perf/util/parse-events.c
Jiri Olsa 5d7be90ed5 perf tools: Fix modifier to be applied on correct events
The event modifier needs to be applied only on the event definition it
is attached to.

The current state is that in case of multiple events definition (in
single '-e' option, separated by ',') all will get modifier of the last
one.

Fixing this by adding separated list for each event definition, so the
modifier is applied only to proper event(s). Added automated test to
catch this, plus some other modifier tests.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1332267341-26338-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-03-22 15:11:38 -03:00

1063 lines
25 KiB
C

#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);
}