[tip:perf/core] perf evsel: Introduce perf_evlist

tip-bot for Arnaldo Carvalho de Melo
2011-01-26T07:14:55Z

Commit-ID: 361c99a661a78ed22264649440e87fe4fe8da1f2
Gitweb: http://git.kernel.org/tip/361c99a661a78ed22264649440e87fe4fe8da1f2
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Tue, 11 Jan 2011 20:56:53 -0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Sat, 22 Jan 2011 19:56:28 -0200

perf evsel: Introduce perf_evlist

Killing two more perf wide global variables: nr_counters and evsel_list
as a list_head.

There are more operations that will need more fields in perf_evlist,
like the pollfd for polling all the fds in a list of evsel instances.

Use option->value to pass the evsel_list to parse_{events,filters}.

LKML-Reference: <new-submission>
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>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Makefile | 2 +
tools/perf/builtin-record.c | 47 ++++++++++++++++-----------
tools/perf/builtin-stat.c | 34 +++++++++++--------
tools/perf/builtin-top.c | 60 +++++++++++++++++++--------------
tools/perf/util/evlist.c | 53 ++++++++++++++++++++++++++++++
tools/perf/util/evlist.h | 19 +++++++++++
tools/perf/util/header.c | 17 ++++++----
tools/perf/util/header.h | 7 +++-
tools/perf/util/include/linux/list.h | 1 +
tools/perf/util/parse-events.c | 51 +++++-----------------------
tools/perf/util/parse-events.h | 7 ----
11 files changed, 180 insertions(+), 118 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 7141c42..f20bc6f 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -402,6 +402,7 @@ LIB_H += util/debug.h
LIB_H += util/debugfs.h
LIB_H += util/event.h
LIB_H += util/evsel.h
+LIB_H += util/evlist.h
LIB_H += util/exec_cmd.h
LIB_H += util/types.h
LIB_H += util/levenshtein.h
@@ -440,6 +441,7 @@ 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/evlist.o
LIB_OBJS += $(OUTPUT)util/evsel.o
LIB_OBJS += $(OUTPUT)util/exec_cmd.o
LIB_OBJS += $(OUTPUT)util/help.o
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index b2f729f..252ace8 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/evlist.h"
#include "util/evsel.h"
#include "util/debug.h"
#include "util/session.h"
@@ -66,6 +67,7 @@ static bool sample_address = false;
static bool sample_time = false;
static bool no_buildid = false;
static bool no_buildid_cache = false;
+static struct perf_evlist *evsel_list;

static long samples = 0;
static u64 bytes_written = 0;
@@ -229,7 +231,8 @@ static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int n
return h_attr;
}

-static void create_counter(struct perf_evsel *evsel, int cpu)
+static void create_counter(struct perf_evlist *evlist,
+ struct perf_evsel *evsel, int cpu)
{
char *filter = evsel->filter;
struct perf_event_attr *attr = &evsel->attr;
@@ -263,7 +266,7 @@ static void create_counter(struct perf_evsel *evsel, int cpu)

attr->sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID;

- if (nr_counters > 1)
+ if (evlist->nr_entries > 1)
attr->sample_type |= PERF_SAMPLE_ID;

/*
@@ -410,7 +413,7 @@ try_again:

if (evsel->idx || thread_index) {
struct perf_evsel *first;
- first = list_entry(evsel_list.next, struct perf_evsel, node);
+ first = list_entry(evlist->entries.next, struct perf_evsel, node);
ret = ioctl(FD(evsel, nr_cpu, thread_index),
PERF_EVENT_IOC_SET_OUTPUT,
FD(first, nr_cpu, 0));
@@ -449,14 +452,14 @@ try_again:
sample_type = attr->sample_type;
}

-static void open_counters(int cpu)
+static void open_counters(struct perf_evlist *evlist, int cpu)
{
struct perf_evsel *pos;

group_fd = -1;

- list_for_each_entry(pos, &evsel_list, node)
- create_counter(pos, cpu);
+ list_for_each_entry(pos, &evlist->entries, node)
+ create_counter(evlist, pos, cpu);

nr_cpu++;
}
@@ -481,9 +484,9 @@ static void atexit_header(void)

if (!no_buildid)
process_buildids();
- perf_header__write(&session->header, output, true);
+ perf_header__write(&session->header, evsel_list, output, true);
perf_session__delete(session);
- perf_evsel_list__delete();
+ perf_evlist__delete(evsel_list);
symbol__exit();
}
}
@@ -611,7 +614,7 @@ static int __cmd_record(int argc, const char **argv)
goto out_delete_session;
}

- if (have_tracepoints(&evsel_list))
+ if (have_tracepoints(&evsel_list->entries))
perf_header__set_feat(&session->header, HEADER_TRACE_INFO);

/*
@@ -674,10 +677,10 @@ static int __cmd_record(int argc, const char **argv)
}

if (!system_wide && no_inherit && !cpu_list) {
- open_counters(-1);
+ open_counters(evsel_list, -1);
} else {
for (i = 0; i < cpus->nr; i++)
- open_counters(cpus->map[i]);
+ open_counters(evsel_list, cpus->map[i]);
}

perf_session__set_sample_type(session, sample_type);
@@ -687,7 +690,8 @@ static int __cmd_record(int argc, const char **argv)
if (err < 0)
return err;
} else if (file_new) {
- err = perf_header__write(&session->header, output, false);
+ err = perf_header__write(&session->header, evsel_list,
+ output, false);
if (err < 0)
return err;
}
@@ -712,7 +716,7 @@ static int __cmd_record(int argc, const char **argv)
return err;
}

- if (have_tracepoints(&evsel_list)) {
+ if (have_tracepoints(&evsel_list->entries)) {
/*
* FIXME err <= 0 here actually means that
* there were no tracepoints so its not really
@@ -721,7 +725,7 @@ 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, &evsel_list,
+ err = event__synthesize_tracing_data(output, evsel_list,
process_synthesized_event,
session);
if (err <= 0) {
@@ -797,7 +801,7 @@ static int __cmd_record(int argc, const char **argv)
for (i = 0; i < nr_cpu; i++) {
struct perf_evsel *pos;

- list_for_each_entry(pos, &evsel_list, node) {
+ list_for_each_entry(pos, &evsel_list->entries, node) {
for (thread = 0;
thread < threads->nr;
thread++)
@@ -838,10 +842,10 @@ static const char * const record_usage[] = {
static bool force, append_file;

const struct option record_options[] = {
- OPT_CALLBACK('e', "event", NULL, "event",
+ OPT_CALLBACK('e', "event", &evsel_list, "event",
"event selector. use 'perf list' to list available events",
parse_events),
- OPT_CALLBACK(0, "filter", NULL, "filter",
+ OPT_CALLBACK(0, "filter", &evsel_list, "filter",
"event filter", parse_filter),
OPT_INTEGER('p', "pid", &target_pid,
"record events on existing process id"),
@@ -892,6 +896,10 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
int err = -ENOMEM;
struct perf_evsel *pos;

+ evsel_list = perf_evlist__new();
+ if (evsel_list == NULL)
+ return -ENOMEM;
+
argc = parse_options(argc, argv, record_options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && target_pid == -1 && target_tid == -1 &&
@@ -913,7 +921,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
if (no_buildid_cache || no_buildid)
disable_buildid_cache();

- if (list_empty(&evsel_list) && perf_evsel_list__create_default() < 0) {
+ if (evsel_list->nr_entries == 0 &&
+ perf_evlist__add_default(evsel_list) < 0) {
pr_err("Not enough memory for event selector list\n");
goto out_symbol_exit;
}
@@ -933,7 +942,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
return -1;
}

- list_for_each_entry(pos, &evsel_list, node) {
+ list_for_each_entry(pos, &evsel_list->entries, node) {
if (perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
goto out_free_fd;
if (perf_header__push_event(pos->attr.config, event_name(pos)))
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index a482a19..da90902 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/evlist.h"
#include "util/evsel.h"
#include "util/debug.h"
#include "util/header.h"
@@ -71,6 +72,8 @@ static struct perf_event_attr default_attrs[] = {

};

+struct perf_evlist *evsel_list;
+
static bool system_wide = false;
static struct cpu_map *cpus;
static int run_idx = 0;
@@ -309,7 +312,7 @@ static int run_perf_stat(int argc __used, const char **argv)
close(child_ready_pipe[0]);
}

- list_for_each_entry(counter, &evsel_list, node) {
+ list_for_each_entry(counter, &evsel_list->entries, node) {
if (create_perf_stat_counter(counter) < 0) {
if (errno == -EPERM || errno == -EACCES) {
error("You may not have permission to collect %sstats.\n"
@@ -347,12 +350,12 @@ static int run_perf_stat(int argc __used, const char **argv)
update_stats(&walltime_nsecs_stats, t1 - t0);

if (no_aggr) {
- list_for_each_entry(counter, &evsel_list, node) {
+ list_for_each_entry(counter, &evsel_list->entries, node) {
read_counter(counter);
perf_evsel__close_fd(counter, cpus->nr, 1);
}
} else {
- list_for_each_entry(counter, &evsel_list, node) {
+ list_for_each_entry(counter, &evsel_list->entries, node) {
read_counter_aggr(counter);
perf_evsel__close_fd(counter, cpus->nr, threads->nr);
}
@@ -555,10 +558,10 @@ static void print_stat(int argc, const char **argv)
}

if (no_aggr) {
- list_for_each_entry(counter, &evsel_list, node)
+ list_for_each_entry(counter, &evsel_list->entries, node)
print_counter(counter);
} else {
- list_for_each_entry(counter, &evsel_list, node)
+ list_for_each_entry(counter, &evsel_list->entries, node)
print_counter_aggr(counter);
}

@@ -610,7 +613,7 @@ static int stat__set_big_num(const struct option *opt __used,
}

static const struct option options[] = {
- OPT_CALLBACK('e', "event", NULL, "event",
+ OPT_CALLBACK('e', "event", &evsel_list, "event",
"event selector. use 'perf list' to list available events",
parse_events),
OPT_BOOLEAN('i', "no-inherit", &no_inherit,
@@ -648,6 +651,10 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)

setlocale(LC_ALL, "");

+ evsel_list = perf_evlist__new();
+ if (evsel_list == NULL)
+ return -ENOMEM;
+
argc = parse_options(argc, argv, options, stat_usage,
PARSE_OPT_STOP_AT_NON_OPTION);

@@ -679,17 +686,14 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
usage_with_options(stat_usage, options);

/* Set attrs and nr_counters if no event is selected and !null_run */
- if (!null_run && !nr_counters) {
+ if (!null_run && !evsel_list->nr_entries) {
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],
- nr_counters);
+ pos = perf_evsel__new(&default_attrs[c], c);
if (pos == NULL)
goto out;
- list_add(&pos->node, &evsel_list);
+ perf_evlist__add(evsel_list, pos);
}
}

@@ -713,7 +717,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
return -1;
}

- list_for_each_entry(pos, &evsel_list, node) {
+ list_for_each_entry(pos, &evsel_list->entries, node) {
if (perf_evsel__alloc_stat_priv(pos) < 0 ||
perf_evsel__alloc_counts(pos, cpus->nr) < 0 ||
perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
@@ -741,9 +745,9 @@ 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)
+ list_for_each_entry(pos, &evsel_list->entries, node)
perf_evsel__free_stat_priv(pos);
- perf_evsel_list__delete();
+ perf_evlist__delete(evsel_list);
out:
thread_map__delete(threads);
threads = NULL;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index b6998e0..216b62e 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/evlist.h"
#include "util/evsel.h"
#include "util/session.h"
#include "util/symbol.h"
@@ -60,6 +61,8 @@

#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))

+struct perf_evlist *evsel_list;
+
static bool system_wide = false;

static int default_interval = 0;
@@ -267,7 +270,7 @@ static void __zero_source_counters(struct sym_entry *syme)

line = syme->src->lines;
while (line) {
- for (i = 0; i < nr_counters; i++)
+ for (i = 0; i < evsel_list->nr_entries; i++)
line->count[i] = 0;
line = line->next;
}
@@ -414,7 +417,7 @@ static double sym_weight(const struct sym_entry *sym)
if (!display_weighted)
return weight;

- for (counter = 1; counter < nr_counters-1; counter++)
+ for (counter = 1; counter < evsel_list->nr_entries - 1; counter++)
weight *= sym->count[counter];

weight /= (sym->count[counter] + 1);
@@ -501,7 +504,7 @@ static void print_sym_table(void)
rb_insert_active_sym(&tmp, syme);
sum_ksamples += syme->snap_count;

- for (j = 0; j < nr_counters; j++)
+ for (j = 0; j < evsel_list->nr_entries; j++)
syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8;
} else
list_remove_active_sym(syme);
@@ -535,9 +538,9 @@ static void print_sym_table(void)
esamples_percent);
}

- if (nr_counters == 1 || !display_weighted) {
+ if (evsel_list->nr_entries == 1 || !display_weighted) {
struct perf_evsel *first;
- first = list_entry(evsel_list.next, struct perf_evsel, node);
+ first = list_entry(evsel_list->entries.next, struct perf_evsel, node);
printf("%" PRIu64, (uint64_t)first->attr.sample_period);
if (freq)
printf("Hz ");
@@ -547,7 +550,7 @@ static void print_sym_table(void)

if (!display_weighted)
printf("%s", event_name(sym_evsel));
- else list_for_each_entry(counter, &evsel_list, node) {
+ else list_for_each_entry(counter, &evsel_list->entries, node) {
if (counter->idx)
printf("/");

@@ -606,7 +609,7 @@ static void print_sym_table(void)
sym_width = winsize.ws_col - dso_width - 29;
}
putchar('\n');
- if (nr_counters == 1)
+ if (evsel_list->nr_entries == 1)
printf(" samples pcnt");
else
printf(" weight samples pcnt");
@@ -615,7 +618,7 @@ static void print_sym_table(void)
printf(" RIP ");
printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
printf(" %s _______ _____",
- nr_counters == 1 ? " " : "______");
+ evsel_list->nr_entries == 1 ? " " : "______");
if (verbose)
printf(" ________________");
printf(" %-*.*s", sym_width, sym_width, graph_line);
@@ -634,7 +637,7 @@ static void print_sym_table(void)
pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
sum_ksamples));

- if (nr_counters == 1 || !display_weighted)
+ if (evsel_list->nr_entries == 1 || !display_weighted)
printf("%20.2f ", syme->weight);
else
printf("%9.1f %10ld ", syme->weight, syme->snap_count);
@@ -744,7 +747,7 @@ static void print_mapped_keys(void)
fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs);
fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries);

- if (nr_counters > 1)
+ if (evsel_list->nr_entries > 1)
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);
@@ -753,7 +756,7 @@ static void print_mapped_keys(void)
fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
fprintf(stdout, "\t[S] stop annotation.\n");

- if (nr_counters > 1)
+ if (evsel_list->nr_entries > 1)
fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);

fprintf(stdout,
@@ -783,7 +786,7 @@ static int key_mapped(int c)
return 1;
case 'E':
case 'w':
- return nr_counters > 1 ? 1 : 0;
+ return evsel_list->nr_entries > 1 ? 1 : 0;
default:
break;
}
@@ -831,22 +834,22 @@ static void handle_keypress(struct perf_session *session, int c)
signal(SIGWINCH, SIG_DFL);
break;
case 'E':
- if (nr_counters > 1) {
+ if (evsel_list->nr_entries > 1) {
fprintf(stderr, "\nAvailable events:");

- list_for_each_entry(sym_evsel, &evsel_list, node)
+ list_for_each_entry(sym_evsel, &evsel_list->entries, 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) {
- sym_evsel = list_entry(evsel_list.next, struct perf_evsel, node);
+ if (sym_counter >= evsel_list->nr_entries) {
+ sym_evsel = list_entry(evsel_list->entries.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)
+ list_for_each_entry(sym_evsel, &evsel_list->entries, node)
if (sym_evsel->idx == sym_counter)
break;
} else sym_counter = 0;
@@ -1198,7 +1201,7 @@ static void perf_session__mmap_read(struct perf_session *self)
int i, thread_index;

for (i = 0; i < cpus->nr; i++) {
- list_for_each_entry(counter, &evsel_list, node) {
+ list_for_each_entry(counter, &evsel_list->entries, node) {
for (thread_index = 0;
thread_index < threads->nr;
thread_index++) {
@@ -1312,7 +1315,7 @@ static int __cmd_top(void)

for (i = 0; i < cpus->nr; i++) {
group_fd = -1;
- list_for_each_entry(counter, &evsel_list, node)
+ list_for_each_entry(counter, &evsel_list->entries, node)
start_counter(i, counter);
}

@@ -1354,7 +1357,7 @@ static const char * const top_usage[] = {
};

static const struct option options[] = {
- OPT_CALLBACK('e', "event", NULL, "event",
+ OPT_CALLBACK('e', "event", &evsel_list, "event",
"event selector. use 'perf list' to list available events",
parse_events),
OPT_INTEGER('c', "count", &default_interval,
@@ -1404,6 +1407,10 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
struct perf_evsel *pos;
int status = -ENOMEM;

+ evsel_list = perf_evlist__new();
+ if (evsel_list == NULL)
+ return -ENOMEM;
+
page_size = sysconf(_SC_PAGE_SIZE);

argc = parse_options(argc, argv, options, top_usage, 0);
@@ -1431,7 +1438,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
cpu_list = NULL;
}

- if (!nr_counters && perf_evsel_list__create_default() < 0) {
+ if (!evsel_list->nr_entries &&
+ perf_evlist__add_default(evsel_list) < 0) {
pr_err("Not enough memory for event selector list\n");
return -ENOMEM;
}
@@ -1459,7 +1467,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
if (cpus == NULL)
usage_with_options(top_usage, options);

- list_for_each_entry(pos, &evsel_list, node) {
+ list_for_each_entry(pos, &evsel_list->entries, node) {
if (perf_evsel__alloc_mmap_per_thread(pos, cpus->nr, threads->nr) < 0 ||
perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
goto out_free_fd;
@@ -1472,10 +1480,10 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
pos->attr.sample_period = default_interval;
}

- sym_evsel = list_entry(evsel_list.next, struct perf_evsel, node);
+ sym_evsel = list_entry(evsel_list->entries.next, struct perf_evsel, node);

symbol_conf.priv_size = (sizeof(struct sym_entry) +
- (nr_counters + 1) * sizeof(unsigned long));
+ (evsel_list->nr_entries + 1) * sizeof(unsigned long));

symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
if (symbol__init() < 0)
@@ -1489,9 +1497,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)

status = __cmd_top();
out_free_fd:
- list_for_each_entry(pos, &evsel_list, node)
+ list_for_each_entry(pos, &evsel_list->entries, node)
perf_evsel__free_mmap(pos);
- perf_evsel_list__delete();
+ perf_evlist__delete(evsel_list);

return status;
}
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
new file mode 100644
index 0000000..7b4faec
--- /dev/null
+++ b/tools/perf/util/evlist.c
@@ -0,0 +1,53 @@
+#include "evlist.h"
+#include "evsel.h"
+#include "util.h"
+
+struct perf_evlist *perf_evlist__new(void)
+{
+ struct perf_evlist *evlist = zalloc(sizeof(*evlist));
+
+ if (evlist != NULL) {
+ INIT_LIST_HEAD(&evlist->entries);
+ }
+
+ return evlist;
+}
+
+static void perf_evlist__purge(struct perf_evlist *evlist)
+{
+ struct perf_evsel *pos, *n;
+
+ list_for_each_entry_safe(pos, n, &evlist->entries, node) {
+ list_del_init(&pos->node);
+ perf_evsel__delete(pos);
+ }
+
+ evlist->nr_entries = 0;
+}
+
+void perf_evlist__delete(struct perf_evlist *evlist)
+{
+ perf_evlist__purge(evlist);
+ free(evlist);
+}
+
+void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry)
+{
+ list_add_tail(&entry->node, &evlist->entries);
+ ++evlist->nr_entries;
+}
+
+int perf_evlist__add_default(struct perf_evlist *evlist)
+{
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_CPU_CYCLES,
+ };
+ struct perf_evsel *evsel = perf_evsel__new(&attr, 0);
+
+ if (evsel == NULL)
+ return -ENOMEM;
+
+ perf_evlist__add(evlist, evsel);
+ return 0;
+}
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
new file mode 100644
index 0000000..48db91a
--- /dev/null
+++ b/tools/perf/util/evlist.h
@@ -0,0 +1,19 @@
+#ifndef __PERF_EVLIST_H
+#define __PERF_EVLIST_H 1
+
+#include <linux/list.h>
+
+struct perf_evlist {
+ struct list_head entries;
+ int nr_entries;
+};
+
+struct perf_evsel;
+
+struct perf_evlist *perf_evlist__new(void);
+void perf_evlist__delete(struct perf_evlist *evlist);
+
+void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
+int perf_evlist__add_default(struct perf_evlist *evlist);
+
+#endif /* __PERF_EVLIST_H */
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index f6a929e7..f0138d4 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -8,6 +8,7 @@
#include <linux/list.h>
#include <linux/kernel.h>

+#include "evlist.h"
#include "util.h"
#include "header.h"
#include "../perf.h"
@@ -428,7 +429,8 @@ static bool perf_session__read_build_ids(struct perf_session *self, bool with_hi
return ret;
}

-static int perf_header__adds_write(struct perf_header *self, int fd)
+static int perf_header__adds_write(struct perf_header *self,
+ struct perf_evlist *evlist, int fd)
{
int nr_sections;
struct perf_session *session;
@@ -463,7 +465,7 @@ 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, &evsel_list);
+ read_tracing_data(fd, &evlist->entries);
trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
}

@@ -513,7 +515,8 @@ int perf_header__write_pipe(int fd)
return 0;
}

-int perf_header__write(struct perf_header *self, int fd, bool at_exit)
+int perf_header__write(struct perf_header *self, struct perf_evlist *evlist,
+ int fd, bool at_exit)
{
struct perf_file_header f_header;
struct perf_file_attr f_attr;
@@ -566,7 +569,7 @@ int perf_header__write(struct perf_header *self, int fd, bool at_exit)
self->data_offset = lseek(fd, 0, SEEK_CUR);

if (at_exit) {
- err = perf_header__adds_write(self, fd);
+ err = perf_header__adds_write(self, evlist, fd);
if (err < 0)
return err;
}
@@ -1133,7 +1136,7 @@ int event__process_event_type(event_t *self,
return 0;
}

-int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
+int event__synthesize_tracing_data(int fd, struct perf_evlist *evlist,
event__handler_t process,
struct perf_session *session __unused)
{
@@ -1144,7 +1147,7 @@ int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
memset(&ev, 0, sizeof(ev));

ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
- size = read_tracing_data_size(fd, pattrs);
+ size = read_tracing_data_size(fd, &evlist->entries);
if (size <= 0)
return size;
aligned_size = ALIGN(size, sizeof(u64));
@@ -1154,7 +1157,7 @@ int event__synthesize_tracing_data(int fd, struct list_head *pattrs,

process(&ev, NULL, session);

- err = read_tracing_data(fd, pattrs);
+ err = read_tracing_data(fd, &evlist->entries);
write_padded(fd, NULL, 0, padding);

return aligned_size;
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 33f16be..65afd7f 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -65,8 +65,11 @@ struct perf_header {
int perf_header__init(struct perf_header *self);
void perf_header__exit(struct perf_header *self);

+struct perf_evlist;
+
int perf_header__read(struct perf_session *session, int fd);
-int perf_header__write(struct perf_header *self, int fd, bool at_exit);
+int perf_header__write(struct perf_header *self, struct perf_evlist *evlist,
+ int fd, bool at_exit);
int perf_header__write_pipe(int fd);

int perf_header__add_attr(struct perf_header *self,
@@ -113,7 +116,7 @@ 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 list_head *pattrs,
+int event__synthesize_tracing_data(int fd, struct perf_evlist *evlist,
event__handler_t process,
struct perf_session *session);
int event__process_tracing_data(event_t *self,
diff --git a/tools/perf/util/include/linux/list.h b/tools/perf/util/include/linux/list.h
index f5ca26e..356c7e4 100644
--- a/tools/perf/util/include/linux/list.h
+++ b/tools/perf/util/include/linux/list.h
@@ -1,3 +1,4 @@
+#include <linux/kernel.h>
#include "../../../../include/linux/list.h"

#ifndef PERF_LIST_H
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 135f69b..d3086ce 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 "evlist.h"
#include "evsel.h"
#include "parse-options.h"
#include "parse-events.h"
@@ -11,10 +12,6 @@
#include "header.h"
#include "debugfs.h"

-int nr_counters;
-
-LIST_HEAD(evsel_list);
-
struct event_symbol {
u8 type;
u64 config;
@@ -778,8 +775,9 @@ modifier:
return ret;
}

-int parse_events(const struct option *opt __used, const char *str, int unset __used)
+int parse_events(const struct option *opt, const char *str, int unset __used)
{
+ struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
struct perf_event_attr attr;
enum event_result ret;

@@ -794,12 +792,10 @@ int parse_events(const struct option *opt __used, const char *str, int unset __u

if (ret != EVT_HANDLED_ALL) {
struct perf_evsel *evsel;
- evsel = perf_evsel__new(&attr,
- nr_counters);
+ evsel = perf_evsel__new(&attr, evlist->nr_entries);
if (evsel == NULL)
return -1;
- list_add_tail(&evsel->node, &evsel_list);
- ++nr_counters;
+ perf_evlist__add(evlist, evsel);
}

if (*str == 0)
@@ -813,13 +809,14 @@ int parse_events(const struct option *opt __used, const char *str, int unset __u
return 0;
}

-int parse_filter(const struct option *opt __used, const char *str,
+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 (!list_empty(&evsel_list))
- last = list_entry(evsel_list.prev, struct perf_evsel, node);
+ 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,
@@ -981,33 +978,3 @@ void print_events(void)

exit(129);
}
-
-int perf_evsel_list__create_default(void)
-{
- struct perf_evsel *evsel;
- struct perf_event_attr attr;
-
- memset(&attr, 0, sizeof(attr));
- attr.type = PERF_TYPE_HARDWARE;
- attr.config = PERF_COUNT_HW_CPU_CYCLES;
-
- evsel = perf_evsel__new(&attr, 0);
-
- if (evsel == NULL)
- return -ENOMEM;
-
- list_add(&evsel->node, &evsel_list);
- ++nr_counters;
- return 0;
-}
-
-void perf_evsel_list__delete(void)
-{
- struct perf_evsel *pos, *n;
-
- list_for_each_entry_safe(pos, n, &evsel_list, node) {
- list_del_init(&pos->node);
- perf_evsel__delete(pos);
- }
- nr_counters = 0;
-}
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 458e3ec..cf7e94a 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -9,11 +9,6 @@
struct list_head;
struct perf_evsel;

-extern struct list_head evsel_list;
-
-int perf_evsel_list__create_default(void);
-void perf_evsel_list__delete(void);
-
struct option;

struct tracepoint_path {
@@ -25,8 +20,6 @@ struct tracepoint_path {
extern struct tracepoint_path *tracepoint_id_to_path(u64 config);
extern bool have_tracepoints(struct list_head *evlist);

-extern int nr_counters;
-
const char *event_name(struct perf_evsel *event);
extern const char *__event_name(int type, u64 config);