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perf tools: Introduce event selectors

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Out of ad-hoc code and global arrays with hard coded sizes.

This is the first step on having a library that will be first
used on regression tests in the 'perf test' tool.

[acme@felicio linux]$ size /tmp/perf.before
   text	   data	    bss	    dec	    hex	filename
1273776	  97384	5104416	6475576	 62cf38	/tmp/perf.before
[acme@felicio linux]$ size /tmp/perf.new
   text	   data	    bss	    dec	    hex	filename
1275422	  97416	1392416	2765254	 2a31c6	/tmp/perf.new

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-01-03 16:39:04 -02:00
parent 56f4c40034
commit 69aad6f1ee
14 changed files with 432 additions and 244 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/perf/Makefile
View File

@ -396,6 +396,7 @@ LIB_H += util/build-id.h
LIB_H += util/debug.h
LIB_H += util/debugfs.h
LIB_H += util/event.h
LIB_H += util/evsel.h
LIB_H += util/exec_cmd.h
LIB_H += util/types.h
LIB_H += util/levenshtein.h
@ -404,6 +405,7 @@ LIB_H += util/parse-options.h
LIB_H += util/parse-events.h
LIB_H += util/quote.h
LIB_H += util/util.h
LIB_H += util/xyarray.h
LIB_H += util/header.h
LIB_H += util/help.h
LIB_H += util/session.h
@ -433,6 +435,7 @@ LIB_OBJS += $(OUTPUT)util/ctype.o
LIB_OBJS += $(OUTPUT)util/debugfs.o
LIB_OBJS += $(OUTPUT)util/environment.o
LIB_OBJS += $(OUTPUT)util/event.o
LIB_OBJS += $(OUTPUT)util/evsel.o
LIB_OBJS += $(OUTPUT)util/exec_cmd.o
LIB_OBJS += $(OUTPUT)util/help.o
LIB_OBJS += $(OUTPUT)util/levenshtein.o
@ -470,6 +473,7 @@ LIB_OBJS += $(OUTPUT)util/sort.o
LIB_OBJS += $(OUTPUT)util/hist.o
LIB_OBJS += $(OUTPUT)util/probe-event.o
LIB_OBJS += $(OUTPUT)util/util.o
LIB_OBJS += $(OUTPUT)util/xyarray.o
LIB_OBJS += $(OUTPUT)util/cpumap.o
BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o

111
tools/perf/builtin-record.c
View File

@ -18,6 +18,7 @@
#include "util/header.h"
#include "util/event.h"
#include "util/evsel.h"
#include "util/debug.h"
#include "util/session.h"
#include "util/symbol.h"
@ -27,13 +28,13 @@
#include <sched.h>
#include <sys/mman.h>
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
enum write_mode_t {
WRITE_FORCE,
WRITE_APPEND
};
static int *fd[MAX_NR_CPUS][MAX_COUNTERS];
static u64 user_interval = ULLONG_MAX;
static u64 default_interval = 0;
static u64 sample_type;
@ -81,7 +82,6 @@ static struct perf_session *session;
static const char *cpu_list;
struct mmap_data {
int counter;
void *base;
unsigned int mask;
unsigned int prev;
@ -229,12 +229,12 @@ static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int n
return h_attr;
}
static void create_counter(int counter, int cpu)
static void create_counter(struct perf_evsel *evsel, int cpu)
{
char *filter = filters[counter];
struct perf_event_attr *attr = attrs + counter;
char *filter = evsel->filter;
struct perf_event_attr *attr = &evsel->attr;
struct perf_header_attr *h_attr;
int track = !counter; /* only the first counter needs these */
int track = !evsel->idx; /* only the first counter needs these */
int thread_index;
int ret;
struct {
@ -320,10 +320,9 @@ retry_sample_id:
for (thread_index = 0; thread_index < thread_num; thread_index++) {
try_again:
fd[nr_cpu][counter][thread_index] = sys_perf_event_open(attr,
all_tids[thread_index], cpu, group_fd, 0);
FD(evsel, nr_cpu, thread_index) = sys_perf_event_open(attr, all_tids[thread_index], cpu, group_fd, 0);
if (fd[nr_cpu][counter][thread_index] < 0) {
if (FD(evsel, nr_cpu, thread_index) < 0) {
int err = errno;
if (err == EPERM || err == EACCES)
@ -360,7 +359,7 @@ try_again:
}
printf("\n");
error("sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information.\n",
fd[nr_cpu][counter][thread_index], strerror(err));
FD(evsel, nr_cpu, thread_index), strerror(err));
#if defined(__i386__) || defined(__x86_64__)
if (attr->type == PERF_TYPE_HARDWARE && err == EOPNOTSUPP)
@ -374,7 +373,7 @@ try_again:
exit(-1);
}
h_attr = get_header_attr(attr, counter);
h_attr = get_header_attr(attr, evsel->idx);
if (h_attr == NULL)
die("nomem\n");
@ -385,7 +384,7 @@ try_again:
}
}
if (read(fd[nr_cpu][counter][thread_index], &read_data, sizeof(read_data)) == -1) {
if (read(FD(evsel, nr_cpu, thread_index), &read_data, sizeof(read_data)) == -1) {
perror("Unable to read perf file descriptor");
exit(-1);
}
@ -395,43 +394,44 @@ try_again:
exit(-1);
}
assert(fd[nr_cpu][counter][thread_index] >= 0);
fcntl(fd[nr_cpu][counter][thread_index], F_SETFL, O_NONBLOCK);
assert(FD(evsel, nr_cpu, thread_index) >= 0);
fcntl(FD(evsel, nr_cpu, thread_index), F_SETFL, O_NONBLOCK);
/*
* First counter acts as the group leader:
*/
if (group && group_fd == -1)
group_fd = fd[nr_cpu][counter][thread_index];
group_fd = FD(evsel, nr_cpu, thread_index);
if (counter || thread_index) {
ret = ioctl(fd[nr_cpu][counter][thread_index],
PERF_EVENT_IOC_SET_OUTPUT,
fd[nr_cpu][0][0]);
if (evsel->idx || thread_index) {
struct perf_evsel *first;
first = list_entry(evsel_list.next, struct perf_evsel, node);
ret = ioctl(FD(evsel, nr_cpu, thread_index),
PERF_EVENT_IOC_SET_OUTPUT,
FD(first, nr_cpu, 0));
if (ret) {
error("failed to set output: %d (%s)\n", errno,
strerror(errno));
exit(-1);
}
} else {
mmap_array[nr_cpu].counter = counter;
mmap_array[nr_cpu].prev = 0;
mmap_array[nr_cpu].mask = mmap_pages*page_size - 1;
mmap_array[nr_cpu].base = mmap(NULL, (mmap_pages+1)*page_size,
PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter][thread_index], 0);
PROT_READ | PROT_WRITE, MAP_SHARED, FD(evsel, nr_cpu, thread_index), 0);
if (mmap_array[nr_cpu].base == MAP_FAILED) {
error("failed to mmap with %d (%s)\n", errno, strerror(errno));
exit(-1);
}
event_array[nr_poll].fd = fd[nr_cpu][counter][thread_index];
event_array[nr_poll].fd = FD(evsel, nr_cpu, thread_index);
event_array[nr_poll].events = POLLIN;
nr_poll++;
}
if (filter != NULL) {
ret = ioctl(fd[nr_cpu][counter][thread_index],
PERF_EVENT_IOC_SET_FILTER, filter);
ret = ioctl(FD(evsel, nr_cpu, thread_index),
PERF_EVENT_IOC_SET_FILTER, filter);
if (ret) {
error("failed to set filter with %d (%s)\n", errno,
strerror(errno));
@ -446,11 +446,12 @@ try_again:
static void open_counters(int cpu)
{
int counter;
struct perf_evsel *pos;
group_fd = -1;
for (counter = 0; counter < nr_counters; counter++)
create_counter(counter, cpu);
list_for_each_entry(pos, &evsel_list, node)
create_counter(pos, cpu);
nr_cpu++;
}
@ -537,7 +538,7 @@ static void mmap_read_all(void)
static int __cmd_record(int argc, const char **argv)
{
int i, counter;
int i;
struct stat st;
int flags;
int err;
@ -604,7 +605,7 @@ static int __cmd_record(int argc, const char **argv)
goto out_delete_session;
}
if (have_tracepoints(attrs, nr_counters))
if (have_tracepoints(&evsel_list))
perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
/*
@ -666,12 +667,6 @@ static int __cmd_record(int argc, const char **argv)
close(child_ready_pipe[0]);
}
nr_cpus = read_cpu_map(cpu_list);
if (nr_cpus < 1) {
perror("failed to collect number of CPUs");
return -1;
}
if (!system_wide && no_inherit && !cpu_list) {
open_counters(-1);
} else {
@ -711,7 +706,7 @@ static int __cmd_record(int argc, const char **argv)
return err;
}
if (have_tracepoints(attrs, nr_counters)) {
if (have_tracepoints(&evsel_list)) {
/*
* FIXME err <= 0 here actually means that
* there were no tracepoints so its not really
@ -720,8 +715,7 @@ static int __cmd_record(int argc, const char **argv)
* return this more properly and also
* propagate errors that now are calling die()
*/
err = event__synthesize_tracing_data(output, attrs,
nr_counters,
err = event__synthesize_tracing_data(output, &evsel_list,
process_synthesized_event,
session);
if (err <= 0) {
@ -795,13 +789,13 @@ static int __cmd_record(int argc, const char **argv)
if (done) {
for (i = 0; i < nr_cpu; i++) {
for (counter = 0;
counter < nr_counters;
counter++) {
struct perf_evsel *pos;
list_for_each_entry(pos, &evsel_list, node) {
for (thread = 0;
thread < thread_num;
thread++)
ioctl(fd[i][counter][thread],
ioctl(FD(pos, i, thread),
PERF_EVENT_IOC_DISABLE);
}
}
@ -887,7 +881,8 @@ const struct option record_options[] = {
int cmd_record(int argc, const char **argv, const char *prefix __used)
{
int i, j, err = -ENOMEM;
int err = -ENOMEM;
struct perf_evsel *pos;
argc = parse_options(argc, argv, record_options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
@ -910,10 +905,9 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
if (no_buildid_cache || no_buildid)
disable_buildid_cache();
if (!nr_counters) {
nr_counters = 1;
attrs[0].type = PERF_TYPE_HARDWARE;
attrs[0].config = PERF_COUNT_HW_CPU_CYCLES;
if (list_empty(&evsel_list) && perf_evsel_list__create_default() < 0) {
pr_err("Not enough memory for event selector list\n");
goto out_symbol_exit;
}
if (target_pid != -1) {
@ -933,12 +927,15 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
thread_num = 1;
}
for (i = 0; i < MAX_NR_CPUS; i++) {
for (j = 0; j < MAX_COUNTERS; j++) {
fd[i][j] = malloc(sizeof(int)*thread_num);
if (!fd[i][j])
goto out_free_fd;
}
nr_cpus = read_cpu_map(cpu_list);
if (nr_cpus < 1) {
perror("failed to collect number of CPUs");
return -1;
}
list_for_each_entry(pos, &evsel_list, node) {
if (perf_evsel__alloc_fd(pos, nr_cpus, thread_num) < 0)
goto out_free_fd;
}
event_array = malloc(
sizeof(struct pollfd)*MAX_NR_CPUS*MAX_COUNTERS*thread_num);
@ -968,10 +965,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
out_free_event_array:
free(event_array);
out_free_fd:
for (i = 0; i < MAX_NR_CPUS; i++) {
for (j = 0; j < MAX_COUNTERS; j++)
free(fd[i][j]);
}
list_for_each_entry(pos, &evsel_list, node)
perf_evsel__free_fd(pos);
free(all_tids);
all_tids = NULL;
out_symbol_exit:

175
tools/perf/builtin-stat.c
View File

@ -43,6 +43,7 @@
#include "util/parse-options.h"
#include "util/parse-events.h"
#include "util/event.h"
#include "util/evsel.h"
#include "util/debug.h"
#include "util/header.h"
#include "util/cpumap.h"
@ -52,6 +53,8 @@
#include <math.h>
#include <locale.h>
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
#define DEFAULT_SEPARATOR " "
static struct perf_event_attr default_attrs[] = {
@ -90,16 +93,11 @@ static const char *cpu_list;
static const char *csv_sep = NULL;
static bool csv_output = false;
static int *fd[MAX_NR_CPUS][MAX_COUNTERS];
static int event_scaled[MAX_COUNTERS];
static struct {
struct cpu_counts {
u64 val;
u64 ena;
u64 run;
} cpu_counts[MAX_NR_CPUS][MAX_COUNTERS];
};
static volatile int done = 0;
@ -108,6 +106,26 @@ struct stats
double n, mean, M2;
};
struct perf_stat {
struct stats res_stats[3];
int scaled;
struct cpu_counts cpu_counts[];
};
static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel, int ncpus)
{
size_t priv_size = (sizeof(struct perf_stat) +
(ncpus * sizeof(struct cpu_counts)));
evsel->priv = zalloc(priv_size);
return evsel->priv == NULL ? -ENOMEM : 0;
}
static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
{
free(evsel->priv);
evsel->priv = NULL;
}
static void update_stats(struct stats *stats, u64 val)
{
double delta;
@ -147,22 +165,21 @@ static double stddev_stats(struct stats *stats)
return sqrt(variance_mean);
}
struct stats event_res_stats[MAX_COUNTERS][3];
struct stats runtime_nsecs_stats[MAX_NR_CPUS];
struct stats runtime_cycles_stats[MAX_NR_CPUS];
struct stats runtime_branches_stats[MAX_NR_CPUS];
struct stats walltime_nsecs_stats;
#define MATCH_EVENT(t, c, counter) \
(attrs[counter].type == PERF_TYPE_##t && \
attrs[counter].config == PERF_COUNT_##c)
#define MATCH_EVENT(t, c, evsel) \
(evsel->attr.type == PERF_TYPE_##t && \
evsel->attr.config == PERF_COUNT_##c)
#define ERR_PERF_OPEN \
"counter %d, sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information."
static int create_perf_stat_counter(int counter, bool *perm_err)
static int create_perf_stat_counter(struct perf_evsel *evsel, bool *perm_err)
{
struct perf_event_attr *attr = attrs + counter;
struct perf_event_attr *attr = &evsel->attr;
int thread;
int ncreated = 0;
@ -174,13 +191,13 @@ static int create_perf_stat_counter(int counter, bool *perm_err)
int cpu;
for (cpu = 0; cpu < nr_cpus; cpu++) {
fd[cpu][counter][0] = sys_perf_event_open(attr,
FD(evsel, cpu, 0) = sys_perf_event_open(attr,
-1, cpumap[cpu], -1, 0);
if (fd[cpu][counter][0] < 0) {
if (FD(evsel, cpu, 0) < 0) {
if (errno == EPERM || errno == EACCES)
*perm_err = true;
error(ERR_PERF_OPEN, counter,
fd[cpu][counter][0], strerror(errno));
error(ERR_PERF_OPEN, evsel->idx,
FD(evsel, cpu, 0), strerror(errno));
} else {
++ncreated;
}
@ -192,13 +209,13 @@ static int create_perf_stat_counter(int counter, bool *perm_err)
attr->enable_on_exec = 1;
}
for (thread = 0; thread < thread_num; thread++) {
fd[0][counter][thread] = sys_perf_event_open(attr,
FD(evsel, 0, thread) = sys_perf_event_open(attr,
all_tids[thread], -1, -1, 0);
if (fd[0][counter][thread] < 0) {
if (FD(evsel, 0, thread) < 0) {
if (errno == EPERM || errno == EACCES)
*perm_err = true;
error(ERR_PERF_OPEN, counter,
fd[0][counter][thread],
error(ERR_PERF_OPEN, evsel->idx,
FD(evsel, 0, thread),
strerror(errno));
} else {
++ncreated;
@ -212,7 +229,7 @@ static int create_perf_stat_counter(int counter, bool *perm_err)
/*
* Does the counter have nsecs as a unit?
*/
static inline int nsec_counter(int counter)
static inline int nsec_counter(struct perf_evsel *counter)
{
if (MATCH_EVENT(SOFTWARE, SW_CPU_CLOCK, counter) ||
MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter))
@ -225,8 +242,9 @@ static inline int nsec_counter(int counter)
* Read out the results of a single counter:
* aggregate counts across CPUs in system-wide mode
*/
static void read_counter_aggr(int counter)
static void read_counter_aggr(struct perf_evsel *counter)
{
struct perf_stat *ps = counter->priv;
u64 count[3], single_count[3];
int cpu;
size_t res, nv;
@ -238,15 +256,15 @@ static void read_counter_aggr(int counter)
nv = scale ? 3 : 1;
for (cpu = 0; cpu < nr_cpus; cpu++) {
for (thread = 0; thread < thread_num; thread++) {
if (fd[cpu][counter][thread] < 0)
if (FD(counter, cpu, thread) < 0)
continue;
res = read(fd[cpu][counter][thread],
res = read(FD(counter, cpu, thread),
single_count, nv * sizeof(u64));
assert(res == nv * sizeof(u64));
close(fd[cpu][counter][thread]);
fd[cpu][counter][thread] = -1;
close(FD(counter, cpu, thread));
FD(counter, cpu, thread) = -1;
count[0] += single_count[0];
if (scale) {
@ -259,20 +277,20 @@ static void read_counter_aggr(int counter)
scaled = 0;
if (scale) {
if (count[2] == 0) {
event_scaled[counter] = -1;
ps->scaled = -1;
count[0] = 0;
return;
}
if (count[2] < count[1]) {
event_scaled[counter] = 1;
ps->scaled = 1;
count[0] = (unsigned long long)
((double)count[0] * count[1] / count[2] + 0.5);
}
}
for (i = 0; i < 3; i++)
update_stats(&event_res_stats[counter][i], count[i]);
update_stats(&ps->res_stats[i], count[i]);
if (verbose) {
fprintf(stderr, "%s: %Ld %Ld %Ld\n", event_name(counter),
@ -294,8 +312,9 @@ static void read_counter_aggr(int counter)
* Read out the results of a single counter:
* do not aggregate counts across CPUs in system-wide mode
*/
static void read_counter(int counter)
static void read_counter(struct perf_evsel *counter)
{
struct cpu_counts *cpu_counts = counter->priv;
u64 count[3];
int cpu;
size_t res, nv;
@ -306,15 +325,15 @@ static void read_counter(int counter)
for (cpu = 0; cpu < nr_cpus; cpu++) {
if (fd[cpu][counter][0] < 0)
if (FD(counter, cpu, 0) < 0)
continue;
res = read(fd[cpu][counter][0], count, nv * sizeof(u64));
res = read(FD(counter, cpu, 0), count, nv * sizeof(u64));
assert(res == nv * sizeof(u64));
close(fd[cpu][counter][0]);
fd[cpu][counter][0] = -1;
close(FD(counter, cpu, 0));
FD(counter, cpu, 0) = -1;
if (scale) {
if (count[2] == 0) {
@ -324,9 +343,9 @@ static void read_counter(int counter)
((double)count[0] * count[1] / count[2] + 0.5);
}
}
cpu_counts[cpu][counter].val = count[0]; /* scaled count */
cpu_counts[cpu][counter].ena = count[1];
cpu_counts[cpu][counter].run = count[2];
cpu_counts[cpu].val = count[0]; /* scaled count */
cpu_counts[cpu].ena = count[1];
cpu_counts[cpu].run = count[2];
if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter))
update_stats(&runtime_nsecs_stats[cpu], count[0]);
@ -340,8 +359,9 @@ static void read_counter(int counter)
static int run_perf_stat(int argc __used, const char **argv)
{
unsigned long long t0, t1;
struct perf_evsel *counter;
int status = 0;
int counter, ncreated = 0;
int ncreated = 0;
int child_ready_pipe[2], go_pipe[2];
bool perm_err = false;
const bool forks = (argc > 0);
@ -401,7 +421,7 @@ static int run_perf_stat(int argc __used, const char **argv)
close(child_ready_pipe[0]);
}
for (counter = 0; counter < nr_counters; counter++)
list_for_each_entry(counter, &evsel_list, node)
ncreated += create_perf_stat_counter(counter, &perm_err);
if (ncreated < nr_counters) {
@ -433,25 +453,28 @@ static int run_perf_stat(int argc __used, const char **argv)
update_stats(&walltime_nsecs_stats, t1 - t0);
if (no_aggr) {
for (counter = 0; counter < nr_counters; counter++)
list_for_each_entry(counter, &evsel_list, node)
read_counter(counter);
} else {
for (counter = 0; counter < nr_counters; counter++)
list_for_each_entry(counter, &evsel_list, node)
read_counter_aggr(counter);
}
return WEXITSTATUS(status);
}
static void print_noise(int counter, double avg)
static void print_noise(struct perf_evsel *evsel, double avg)
{
struct perf_stat *ps;
if (run_count == 1)
return;
ps = evsel->priv;
fprintf(stderr, " ( +- %7.3f%% )",
100 * stddev_stats(&event_res_stats[counter][0]) / avg);
100 * stddev_stats(&ps->res_stats[0]) / avg);
}
static void nsec_printout(int cpu, int counter, double avg)
static void nsec_printout(int cpu, struct perf_evsel *counter, double avg)
{
double msecs = avg / 1e6;
char cpustr[16] = { '\0', };
@ -473,7 +496,7 @@ static void nsec_printout(int cpu, int counter, double avg)
}
}
static void abs_printout(int cpu, int counter, double avg)
static void abs_printout(int cpu, struct perf_evsel *counter, double avg)
{
double total, ratio = 0.0;
char cpustr[16] = { '\0', };
@ -528,10 +551,11 @@ static void abs_printout(int cpu, int counter, double avg)
* Print out the results of a single counter:
* aggregated counts in system-wide mode
*/
static void print_counter_aggr(int counter)
static void print_counter_aggr(struct perf_evsel *counter)
{
double avg = avg_stats(&event_res_stats[counter][0]);
int scaled = event_scaled[counter];
struct perf_stat *ps = counter->priv;
double avg = avg_stats(&ps->res_stats[0]);
int scaled = ps->scaled;
if (scaled == -1) {
fprintf(stderr, "%*s%s%-24s\n",
@ -555,8 +579,8 @@ static void print_counter_aggr(int counter)
if (scaled) {
double avg_enabled, avg_running;
avg_enabled = avg_stats(&event_res_stats[counter][1]);
avg_running = avg_stats(&event_res_stats[counter][2]);
avg_enabled = avg_stats(&ps->res_stats[1]);
avg_running = avg_stats(&ps->res_stats[2]);
fprintf(stderr, " (scaled from %.2f%%)",
100 * avg_running / avg_enabled);
@ -569,15 +593,16 @@ static void print_counter_aggr(int counter)
* Print out the results of a single counter:
* does not use aggregated count in system-wide
*/
static void print_counter(int counter)
static void print_counter(struct perf_evsel *counter)
{
struct perf_stat *ps = counter->priv;
u64 ena, run, val;
int cpu;
for (cpu = 0; cpu < nr_cpus; cpu++) {
val = cpu_counts[cpu][counter].val;
ena = cpu_counts[cpu][counter].ena;
run = cpu_counts[cpu][counter].run;
val = ps->cpu_counts[cpu].val;
ena = ps->cpu_counts[cpu].ena;
run = ps->cpu_counts[cpu].run;
if (run == 0 || ena == 0) {
fprintf(stderr, "CPU%*d%s%*s%s%-24s",
csv_output ? 0 : -4,
@ -609,7 +634,8 @@ static void print_counter(int counter)
static void print_stat(int argc, const char **argv)
{
int i, counter;
struct perf_evsel *counter;
int i;
fflush(stdout);
@ -632,10 +658,10 @@ static void print_stat(int argc, const char **argv)
}
if (no_aggr) {
for (counter = 0; counter < nr_counters; counter++)
list_for_each_entry(counter, &evsel_list, node)
print_counter(counter);
} else {
for (counter = 0; counter < nr_counters; counter++)
list_for_each_entry(counter, &evsel_list, node)
print_counter_aggr(counter);
}
@ -720,8 +746,8 @@ static const struct option options[] = {
int cmd_stat(int argc, const char **argv, const char *prefix __used)
{
int status;
int i,j;
struct perf_evsel *pos;
int status = -ENOMEM;
setlocale(LC_ALL, "");
@ -757,8 +783,18 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
/* Set attrs and nr_counters if no event is selected and !null_run */
if (!null_run && !nr_counters) {
memcpy(attrs, default_attrs, sizeof(default_attrs));
size_t c;
nr_counters = ARRAY_SIZE(default_attrs);
for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) {
pos = perf_evsel__new(default_attrs[c].type,
default_attrs[c].config,
nr_counters);
if (pos == NULL)
goto out;
list_add(&pos->node, &evsel_list);
}
}
if (system_wide)
@ -786,12 +822,10 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
thread_num = 1;
}
for (i = 0; i < MAX_NR_CPUS; i++) {
for (j = 0; j < MAX_COUNTERS; j++) {
fd[i][j] = malloc(sizeof(int)*thread_num);
if (!fd[i][j])
return -ENOMEM;
}
list_for_each_entry(pos, &evsel_list, node) {
if (perf_evsel__alloc_stat_priv(pos, nr_cpus) < 0 ||
perf_evsel__alloc_fd(pos, nr_cpus, thread_num) < 0)
goto out_free_fd;
}
/*
@ -814,6 +848,11 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
if (status != -1)
print_stat(argc, argv);
out_free_fd:
list_for_each_entry(pos, &evsel_list, node) {
perf_evsel__free_fd(pos);
perf_evsel__free_stat_priv(pos);
}
out:
return status;
}

176
tools/perf/builtin-top.c
View File

@ -21,6 +21,7 @@
#include "perf.h"
#include "util/color.h"
#include "util/evsel.h"
#include "util/session.h"
#include "util/symbol.h"
#include "util/thread.h"
@ -29,6 +30,7 @@
#include "util/parse-options.h"
#include "util/parse-events.h"
#include "util/cpumap.h"
#include "util/xyarray.h"
#include "util/debug.h"
@ -55,7 +57,7 @@
#include <linux/unistd.h>
#include <linux/types.h>
static int *fd[MAX_NR_CPUS][MAX_COUNTERS];
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
static bool system_wide = false;
@ -100,6 +102,7 @@ struct sym_entry *sym_filter_entry = NULL;
struct sym_entry *sym_filter_entry_sched = NULL;
static int sym_pcnt_filter = 5;
static int sym_counter = 0;
static struct perf_evsel *sym_evsel = NULL;
static int display_weighted = -1;
static const char *cpu_list;
@ -353,7 +356,7 @@ static void show_details(struct sym_entry *syme)
return;
symbol = sym_entry__symbol(syme);
printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
printf("Showing %s for %s\n", event_name(sym_evsel), symbol->name);
printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
pthread_mutex_lock(&syme->src->lock);
@ -460,7 +463,8 @@ static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
static void print_sym_table(void)
{
int printed = 0, j;
int counter, snap = !display_weighted ? sym_counter : 0;
struct perf_evsel *counter;
int snap = !display_weighted ? sym_counter : 0;
float samples_per_sec = samples/delay_secs;
float ksamples_per_sec = kernel_samples/delay_secs;
float us_samples_per_sec = (us_samples)/delay_secs;
@ -532,7 +536,9 @@ static void print_sym_table(void)
}
if (nr_counters == 1 || !display_weighted) {
printf("%Ld", (u64)attrs[0].sample_period);
struct perf_evsel *first;
first = list_entry(evsel_list.next, struct perf_evsel, node);
printf("%Ld", first->attr.sample_period);
if (freq)
printf("Hz ");
else
@ -540,9 +546,9 @@ static void print_sym_table(void)
}
if (!display_weighted)
printf("%s", event_name(sym_counter));
else for (counter = 0; counter < nr_counters; counter++) {
if (counter)
printf("%s", event_name(sym_evsel));
else list_for_each_entry(counter, &evsel_list, node) {
if (counter->idx)
printf("/");
printf("%s", event_name(counter));
@ -739,7 +745,7 @@ static void print_mapped_keys(void)
fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries);
if (nr_counters > 1)
fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter));
fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_evsel));
fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
@ -826,19 +832,23 @@ static void handle_keypress(struct perf_session *session, int c)
break;
case 'E':
if (nr_counters > 1) {
int i;
fprintf(stderr, "\nAvailable events:");
for (i = 0; i < nr_counters; i++)
fprintf(stderr, "\n\t%d %s", i, event_name(i));
list_for_each_entry(sym_evsel, &evsel_list, node)
fprintf(stderr, "\n\t%d %s", sym_evsel->idx, event_name(sym_evsel));
prompt_integer(&sym_counter, "Enter details event counter");
if (sym_counter >= nr_counters) {
fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0));
sym_evsel = list_entry(evsel_list.next, struct perf_evsel, node);
sym_counter = 0;
fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(sym_evsel));
sleep(1);
break;
}
list_for_each_entry(sym_evsel, &evsel_list, node)
if (sym_evsel->idx == sym_counter)
break;
} else sym_counter = 0;
break;
case 'f':
@ -978,7 +988,8 @@ static int symbol_filter(struct map *map, struct symbol *sym)
static void event__process_sample(const event_t *self,
struct sample_data *sample,
struct perf_session *session, int counter)
struct perf_session *session,
struct perf_evsel *evsel)
{
u64 ip = self->ip.ip;
struct sym_entry *syme;
@ -1071,9 +1082,9 @@ static void event__process_sample(const event_t *self,
syme = symbol__priv(al.sym);
if (!syme->skip) {
syme->count[counter]++;
syme->count[evsel->idx]++;
syme->origin = origin;
record_precise_ip(syme, counter, ip);
record_precise_ip(syme, evsel->idx, ip);
pthread_mutex_lock(&active_symbols_lock);
if (list_empty(&syme->node) || !syme->node.next)
__list_insert_active_sym(syme);
@ -1082,12 +1093,24 @@ static void event__process_sample(const event_t *self,
}
struct mmap_data {
int counter;
void *base;
int mask;
unsigned int prev;
};
static int perf_evsel__alloc_mmap_per_thread(struct perf_evsel *evsel,
int ncpus, int nthreads)
{
evsel->priv = xyarray__new(ncpus, nthreads, sizeof(struct mmap_data));
return evsel->priv != NULL ? 0 : -ENOMEM;
}
static void perf_evsel__free_mmap(struct perf_evsel *evsel)
{
xyarray__delete(evsel->priv);
evsel->priv = NULL;
}
static unsigned int mmap_read_head(struct mmap_data *md)
{
struct perf_event_mmap_page *pc = md->base;
@ -1100,8 +1123,11 @@ static unsigned int mmap_read_head(struct mmap_data *md)
}
static void perf_session__mmap_read_counter(struct perf_session *self,
struct mmap_data *md)
struct perf_evsel *evsel,
int cpu, int thread_idx)
{
struct xyarray *mmap_array = evsel->priv;
struct mmap_data *md = xyarray__entry(mmap_array, cpu, thread_idx);
unsigned int head = mmap_read_head(md);
unsigned int old = md->prev;
unsigned char *data = md->base + page_size;
@ -1155,7 +1181,7 @@ static void perf_session__mmap_read_counter(struct perf_session *self,
event__parse_sample(event, self, &sample);
if (event->header.type == PERF_RECORD_SAMPLE)
event__process_sample(event, &sample, self, md->counter);
event__process_sample(event, &sample, self, evsel);
else
event__process(event, &sample, self);
old += size;
@ -1165,28 +1191,31 @@ static void perf_session__mmap_read_counter(struct perf_session *self,
}
static struct pollfd *event_array;
static struct mmap_data *mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
static void perf_session__mmap_read(struct perf_session *self)
{
int i, counter, thread_index;
struct perf_evsel *counter;
int i, thread_index;
for (i = 0; i < nr_cpus; i++) {
for (counter = 0; counter < nr_counters; counter++)
list_for_each_entry(counter, &evsel_list, node) {
for (thread_index = 0;
thread_index < thread_num;
thread_index++) {
perf_session__mmap_read_counter(self,
&mmap_array[i][counter][thread_index]);
counter, i, thread_index);
}
}
}
}
int nr_poll;
int group_fd;
static void start_counter(int i, int counter)
static void start_counter(int i, struct perf_evsel *evsel)
{
struct xyarray *mmap_array = evsel->priv;
struct mmap_data *mm;
struct perf_event_attr *attr;
int cpu = -1;
int thread_index;
@ -1194,7 +1223,7 @@ static void start_counter(int i, int counter)
if (target_tid == -1)
cpu = cpumap[i];
attr = attrs + counter;
attr = &evsel->attr;
attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
@ -1209,10 +1238,10 @@ static void start_counter(int i, int counter)
for (thread_index = 0; thread_index < thread_num; thread_index++) {
try_again:
fd[i][counter][thread_index] = sys_perf_event_open(attr,
FD(evsel, i, thread_index) = sys_perf_event_open(attr,
all_tids[thread_index], cpu, group_fd, 0);
if (fd[i][counter][thread_index] < 0) {
if (FD(evsel, i, thread_index) < 0) {
int err = errno;
if (err == EPERM || err == EACCES)
@ -1236,29 +1265,29 @@ try_again:
}
printf("\n");
error("sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information.\n",
fd[i][counter][thread_index], strerror(err));
FD(evsel, i, thread_index), strerror(err));
die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
exit(-1);
}
assert(fd[i][counter][thread_index] >= 0);
fcntl(fd[i][counter][thread_index], F_SETFL, O_NONBLOCK);
assert(FD(evsel, i, thread_index) >= 0);
fcntl(FD(evsel, i, thread_index), F_SETFL, O_NONBLOCK);
/*
* First counter acts as the group leader:
*/
if (group && group_fd == -1)
group_fd = fd[i][counter][thread_index];
group_fd = FD(evsel, i, thread_index);
event_array[nr_poll].fd = fd[i][counter][thread_index];
event_array[nr_poll].fd = FD(evsel, i, thread_index);
event_array[nr_poll].events = POLLIN;
nr_poll++;
mmap_array[i][counter][thread_index].counter = counter;
mmap_array[i][counter][thread_index].prev = 0;
mmap_array[i][counter][thread_index].mask = mmap_pages*page_size - 1;
mmap_array[i][counter][thread_index].base = mmap(NULL, (mmap_pages+1)*page_size,
PROT_READ, MAP_SHARED, fd[i][counter][thread_index], 0);
if (mmap_array[i][counter][thread_index].base == MAP_FAILED)
mm = xyarray__entry(mmap_array, i, thread_index);
mm->prev = 0;
mm->mask = mmap_pages*page_size - 1;
mm->base = mmap(NULL, (mmap_pages+1)*page_size,
PROT_READ, MAP_SHARED, FD(evsel, i, thread_index), 0);
if (mm->base == MAP_FAILED)
die("failed to mmap with %d (%s)\n", errno, strerror(errno));
}
}
@ -1266,8 +1295,8 @@ try_again:
static int __cmd_top(void)
{
pthread_t thread;
int i, counter;
int ret;
struct perf_evsel *counter;
int i, ret;
/*
* FIXME: perf_session__new should allow passing a O_MMAP, so that all this
* mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
@ -1283,7 +1312,7 @@ static int __cmd_top(void)
for (i = 0; i < nr_cpus; i++) {
group_fd = -1;
for (counter = 0; counter < nr_counters; counter++)
list_for_each_entry(counter, &evsel_list, node)
start_counter(i, counter);
}
@ -1372,8 +1401,8 @@ static const struct option options[] = {
int cmd_top(int argc, const char **argv, const char *prefix __used)
{
int counter;
int i,j;
struct perf_evsel *pos;
int status = -ENOMEM;
page_size = sysconf(_SC_PAGE_SIZE);
@ -1398,15 +1427,6 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
thread_num = 1;
}
for (i = 0; i < MAX_NR_CPUS; i++) {
for (j = 0; j < MAX_COUNTERS; j++) {
fd[i][j] = malloc(sizeof(int)*thread_num);
mmap_array[i][j] = zalloc(
sizeof(struct mmap_data)*thread_num);
if (!fd[i][j] || !mmap_array[i][j])
return -ENOMEM;
}
}
event_array = malloc(
sizeof(struct pollfd)*MAX_NR_CPUS*MAX_COUNTERS*thread_num);
if (!event_array)
@ -1419,15 +1439,10 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
cpu_list = NULL;
}
if (!nr_counters)
nr_counters = 1;
symbol_conf.priv_size = (sizeof(struct sym_entry) +
(nr_counters + 1) * sizeof(unsigned long));
symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
if (symbol__init() < 0)
return -1;
if (!nr_counters && perf_evsel_list__create_default() < 0) {
pr_err("Not enough memory for event selector list\n");
return -ENOMEM;
}
if (delay_secs < 1)
delay_secs = 1;
@ -1444,16 +1459,6 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
exit(EXIT_FAILURE);
}
/*
* Fill in the ones not specifically initialized via -c:
*/
for (counter = 0; counter < nr_counters; counter++) {
if (attrs[counter].sample_period)
continue;
attrs[counter].sample_period = default_interval;
}
if (target_tid != -1)
nr_cpus = 1;
else
@ -1462,11 +1467,38 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
if (nr_cpus < 1)
usage_with_options(top_usage, options);
list_for_each_entry(pos, &evsel_list, node) {
if (perf_evsel__alloc_mmap_per_thread(pos, nr_cpus, thread_num) < 0 ||
perf_evsel__alloc_fd(pos, nr_cpus, thread_num) < 0)
goto out_free_fd;
/*
* Fill in the ones not specifically initialized via -c:
*/
if (pos->attr.sample_period)
continue;
pos->attr.sample_period = default_interval;
}
symbol_conf.priv_size = (sizeof(struct sym_entry) +
(nr_counters + 1) * sizeof(unsigned long));
symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
if (symbol__init() < 0)
return -1;
get_term_dimensions(&winsize);
if (print_entries == 0) {
update_print_entries(&winsize);
signal(SIGWINCH, sig_winch_handler);
}
return __cmd_top();
status = __cmd_top();
out_free_fd:
list_for_each_entry(pos, &evsel_list, node) {
perf_evsel__free_fd(pos);
perf_evsel__free_mmap(pos);
}
return status;
}

35
tools/perf/util/evsel.c Normal file
View File

@ -0,0 +1,35 @@
#include "evsel.h"
#include "util.h"
struct perf_evsel *perf_evsel__new(u32 type, u64 config, int idx)
{
struct perf_evsel *evsel = zalloc(sizeof(*evsel));
if (evsel != NULL) {
evsel->idx = idx;
evsel->attr.type = type;
evsel->attr.config = config;
INIT_LIST_HEAD(&evsel->node);
}
return evsel;
}
int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
{
evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int));
return evsel->fd != NULL ? 0 : -ENOMEM;
}
void perf_evsel__free_fd(struct perf_evsel *evsel)
{
xyarray__delete(evsel->fd);
evsel->fd = NULL;
}
void perf_evsel__delete(struct perf_evsel *evsel)
{
assert(list_empty(&evsel->node));
xyarray__delete(evsel->fd);
free(evsel);
}

24
tools/perf/util/evsel.h Normal file
View File

@ -0,0 +1,24 @@
#ifndef __PERF_EVSEL_H
#define __PERF_EVSEL_H 1
#include <linux/list.h>
#include <linux/perf_event.h>
#include "types.h"
#include "xyarray.h"
struct perf_evsel {
struct list_head node;
struct perf_event_attr attr;
char *filter;
struct xyarray *fd;
int idx;
void *priv;
};
struct perf_evsel *perf_evsel__new(u32 type, u64 config, int idx);
void perf_evsel__delete(struct perf_evsel *evsel);
int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
void perf_evsel__free_fd(struct perf_evsel *evsel);
#endif /* __PERF_EVSEL_H */

9
tools/perf/util/header.c
View File

@ -461,7 +461,7 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
/* Write trace info */
trace_sec->offset = lseek(fd, 0, SEEK_CUR);
read_tracing_data(fd, attrs, nr_counters);
read_tracing_data(fd, &evsel_list);
trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
}
@ -1131,8 +1131,7 @@ int event__process_event_type(event_t *self,
return 0;
}
int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
int nb_events,
int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
event__handler_t process,
struct perf_session *session __unused)
{
@ -1143,7 +1142,7 @@ int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
memset(&ev, 0, sizeof(ev));
ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
size = read_tracing_data_size(fd, pattrs, nb_events);
size = read_tracing_data_size(fd, pattrs);
if (size <= 0)
return size;
aligned_size = ALIGN(size, sizeof(u64));
@ -1153,7 +1152,7 @@ int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
process(&ev, NULL, session);
err = read_tracing_data(fd, pattrs, nb_events);
err = read_tracing_data(fd, pattrs);
write_padded(fd, NULL, 0, padding);
return aligned_size;

3
tools/perf/util/header.h
View File

@ -113,8 +113,7 @@ int event__synthesize_event_types(event__handler_t process,
int event__process_event_type(event_t *self,
struct perf_session *session);
int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
int nb_events,
int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
event__handler_t process,
struct perf_session *session);
int event__process_tracing_data(event_t *self,

47
tools/perf/util/parse-events.c
View File

@ -1,6 +1,7 @@
#include "../../../include/linux/hw_breakpoint.h"
#include "util.h"
#include "../perf.h"
#include "evsel.h"
#include "parse-options.h"
#include "parse-events.h"
#include "exec_cmd.h"
@ -12,8 +13,7 @@
int nr_counters;
struct perf_event_attr attrs[MAX_COUNTERS];
char *filters[MAX_COUNTERS];
LIST_HEAD(evsel_list);
struct event_symbol {
u8 type;
@ -266,10 +266,10 @@ static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
return name;
}
const char *event_name(int counter)
const char *event_name(struct perf_evsel *evsel)
{
u64 config = attrs[counter].config;
int type = attrs[counter].type;
u64 config = evsel->attr.config;
int type = evsel->attr.type;
return __event_name(type, config);
}
@ -814,9 +814,6 @@ int parse_events(const struct option *opt __used, const char *str, int unset __u
return -1;
for (;;) {
if (nr_counters == MAX_COUNTERS)
return -1;
memset(&attr, 0, sizeof(attr));
ret = parse_event_symbols(&str, &attr);
if (ret == EVT_FAILED)
@ -826,8 +823,13 @@ int parse_events(const struct option *opt __used, const char *str, int unset __u
return -1;
if (ret != EVT_HANDLED_ALL) {
attrs[nr_counters] = attr;
nr_counters++;
struct perf_evsel *evsel;
evsel = perf_evsel__new(attr.type, attr.config,
nr_counters);
if (evsel == NULL)
return -1;
list_add_tail(&evsel->node, &evsel_list);
++nr_counters;
}
if (*str == 0)
@ -844,21 +846,22 @@ int parse_events(const struct option *opt __used, const char *str, int unset __u
int parse_filter(const struct option *opt __used, const char *str,
int unset __used)
{
int i = nr_counters - 1;
int len = strlen(str);
struct perf_evsel *last = NULL;
if (i < 0 || attrs[i].type != PERF_TYPE_TRACEPOINT) {
if (!list_empty(&evsel_list))
last = list_entry(evsel_list.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;
}
filters[i] = malloc(len + 1);
if (!filters[i]) {
last->filter = strdup(str);
if (last->filter == NULL) {
fprintf(stderr, "not enough memory to hold filter string\n");
return -1;
}
strcpy(filters[i], str);
return 0;
}
@ -967,3 +970,15 @@ void print_events(void)
exit(129);
}
int perf_evsel_list__create_default(void)
{
struct perf_evsel *evsel = perf_evsel__new(PERF_TYPE_HARDWARE,
PERF_COUNT_HW_CPU_CYCLES, 0);
if (evsel == NULL)
return -ENOMEM;
list_add(&evsel->node, &evsel_list);
++nr_counters;
return 0;
}

17
tools/perf/util/parse-events.h
View File

@ -4,6 +4,15 @@
* Parse symbolic events/counts passed in as options:
*/
#include <linux/perf_event.h>
struct list_head;
struct perf_evsel;
extern struct list_head evsel_list;
int perf_evsel_list__create_default(void);
struct option;
struct tracepoint_path {
@ -13,14 +22,11 @@ struct tracepoint_path {
};
extern struct tracepoint_path *tracepoint_id_to_path(u64 config);
extern bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events);
extern bool have_tracepoints(struct list_head *evsel_list);
extern int nr_counters;
extern struct perf_event_attr attrs[MAX_COUNTERS];
extern char *filters[MAX_COUNTERS];
extern const char *event_name(int ctr);
const char *event_name(struct perf_evsel *event);
extern const char *__event_name(int type, u64 config);
extern int parse_events(const struct option *opt, const char *str, int unset);
@ -33,5 +39,4 @@ extern void print_events(void);
extern char debugfs_path[];
extern int valid_debugfs_mount(const char *debugfs);
#endif /* __PERF_PARSE_EVENTS_H */

30
tools/perf/util/trace-event-info.c
View File

@ -34,11 +34,13 @@
#include <ctype.h>
#include <errno.h>
#include <stdbool.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include "../perf.h"
#include "trace-event.h"
#include "debugfs.h"
#include "evsel.h"
#define VERSION "0.5"
@ -469,16 +471,17 @@ out:
}
static struct tracepoint_path *
get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events)
get_tracepoints_path(struct list_head *pattrs)
{
struct tracepoint_path path, *ppath = &path;
int i, nr_tracepoints = 0;
struct perf_evsel *pos;
int nr_tracepoints = 0;
for (i = 0; i < nb_events; i++) {
if (pattrs[i].type != PERF_TYPE_TRACEPOINT)
list_for_each_entry(pos, pattrs, node) {
if (pos->attr.type != PERF_TYPE_TRACEPOINT)
continue;
++nr_tracepoints;
ppath->next = tracepoint_id_to_path(pattrs[i].config);
ppath->next = tracepoint_id_to_path(pos->attr.config);
if (!ppath->next)
die("%s\n", "No memory to alloc tracepoints list");
ppath = ppath->next;
@ -487,21 +490,21 @@ get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events)
return nr_tracepoints > 0 ? path.next : NULL;
}
bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events)
bool have_tracepoints(struct list_head *pattrs)
{
int i;
struct perf_evsel *pos;
for (i = 0; i < nb_events; i++)
if (pattrs[i].type == PERF_TYPE_TRACEPOINT)
list_for_each_entry(pos, pattrs, node)
if (pos->attr.type == PERF_TYPE_TRACEPOINT)
return true;
return false;
}
int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events)
int read_tracing_data(int fd, struct list_head *pattrs)
{
char buf[BUFSIZ];
struct tracepoint_path *tps = get_tracepoints_path(pattrs, nb_events);
struct tracepoint_path *tps = get_tracepoints_path(pattrs);
/*
* What? No tracepoints? No sense writing anything here, bail out.
@ -545,14 +548,13 @@ int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events)
return 0;
}
ssize_t read_tracing_data_size(int fd, struct perf_event_attr *pattrs,
int nb_events)
ssize_t read_tracing_data_size(int fd, struct list_head *pattrs)
{
ssize_t size;
int err = 0;
calc_data_size = 1;
err = read_tracing_data(fd, pattrs, nb_events);
err = read_tracing_data(fd, pattrs);
size = calc_data_size - 1;
calc_data_size = 0;

5
tools/perf/util/trace-event.h
View File

@ -262,9 +262,8 @@ raw_field_value(struct event *event, const char *name, void *data);
void *raw_field_ptr(struct event *event, const char *name, void *data);
unsigned long long eval_flag(const char *flag);
int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events);
ssize_t read_tracing_data_size(int fd, struct perf_event_attr *pattrs,
int nb_events);
int read_tracing_data(int fd, struct list_head *pattrs);
ssize_t read_tracing_data_size(int fd, struct list_head *pattrs);
/* taken from kernel/trace/trace.h */
enum trace_flag_type {

20
tools/perf/util/xyarray.c Normal file
View File

@ -0,0 +1,20 @@
#include "xyarray.h"
#include "util.h"
struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
{
size_t row_size = ylen * entry_size;
struct xyarray *xy = zalloc(sizeof(*xy) + xlen * row_size);
if (xy != NULL) {
xy->entry_size = entry_size;
xy->row_size = row_size;
}
return xy;
}
void xyarray__delete(struct xyarray *xy)
{
free(xy);
}

20
tools/perf/util/xyarray.h Normal file
View File

@ -0,0 +1,20 @@
#ifndef _PERF_XYARRAY_H_
#define _PERF_XYARRAY_H_ 1
#include <sys/types.h>
struct xyarray {
size_t row_size;
size_t entry_size;
char contents[];
};
struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size);
void xyarray__delete(struct xyarray *xy);
static inline void *xyarray__entry(struct xyarray *xy, int x, int y)
{
return &xy->contents[x * xy->row_size + y * xy->entry_size];
}
#endif /* _PERF_XYARRAY_H_ */