[PATCH 01/11] perf tools: Introduce event selectors

Arnaldo Carvalho de Melo
2011-01-04T03:50:45Z

From: Arnaldo Carvalho de Melo <acme@redhat.com>

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>
Cc: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Makefile | 4 +
tools/perf/builtin-record.c | 113 +++++++++++------------
tools/perf/builtin-stat.c | 175 ++++++++++++++++++++++--------------
tools/perf/builtin-top.c | 176 +++++++++++++++++++++---------------
tools/perf/util/evsel.c | 35 +++++++
tools/perf/util/evsel.h | 24 +++++
tools/perf/util/header.c | 9 +-
tools/perf/util/header.h | 3 +-
tools/perf/util/parse-events.c | 47 +++++++----
tools/perf/util/parse-events.h | 17 +++--
tools/perf/util/trace-event-info.c | 30 ++++---
tools/perf/util/trace-event.h | 5 +-
tools/perf/util/xyarray.c | 20 ++++
tools/perf/util/xyarray.h | 20 ++++
14 files changed, 433 insertions(+), 245 deletions(-)
create mode 100644 tools/perf/util/evsel.c
create mode 100644 tools/perf/util/evsel.h
create mode 100644 tools/perf/util/xyarray.c
create mode 100644 tools/perf/util/xyarray.h

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index ac6692c..1b9b13e 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -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
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 50efbd5..e68aee3 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -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];
-
- if (counter || thread_index) {
- ret = ioctl(fd[nr_cpu][counter][thread_index],
- PERF_EVENT_IOC_SET_OUTPUT,
- fd[nr_cpu][0][0]);
+ group_fd = FD(evsel, nr_cpu, thread_index);
+
+ 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:
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 7ff746d..511ebaf 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -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;
}
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index ae15f04..13a836e 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -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;
}
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
new file mode 100644
index 0000000..6539ec9
--- /dev/null
+++ b/tools/perf/util/evsel.c
@@ -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);
+}
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
new file mode 100644
index 0000000..3eb3989
--- /dev/null
+++ b/tools/perf/util/evsel.h
@@ -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 */
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 16a1602..ecb5a84 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -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;
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 6335965..33f16be 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -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,
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index c305305..2d948ad 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -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;
+}
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index fc4ab3f..0f915a0 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -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 */
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index b157260..35729f4 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -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;

diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index b3e86b1..b5f12ca 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -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 {
diff --git a/tools/perf/util/xyarray.c b/tools/perf/util/xyarray.c
new file mode 100644
index 0000000..22afbf6
--- /dev/null
+++ b/tools/perf/util/xyarray.c
@@ -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);
+}
diff --git a/tools/perf/util/xyarray.h b/tools/perf/util/xyarray.h
new file mode 100644
index 0000000..c488a07
--- /dev/null
+++ b/tools/perf/util/xyarray.h
@@ -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_ */
--
1.6.2.5