Re: [PATCH 3/3] perf, tool: Add new event group management
From: Arnaldo Carvalho de Melo
Date: Tue Mar 20 2012 - 16:09:27 EST
Em Tue, Mar 20, 2012 at 07:15:41PM +0100, Jiri Olsa escreveu:
> The current event grouping is basic. If you specify the '--group'
> option for record/stat/top command, all the specified events become
> members of a single group with the first event as a group leader.
>
> This patch adds a functionality that allows to create event groups
> based on the way they are specified on the command line. Extending
> the '--group/-g' option power while preserving the current behaviour.
>
> It is now possible to use '--group/-g' option with 'parsed' value,
> which will create groups based on the command line events layout.
>
> With the '--group/-g parsed' option specified, all events separated
> by ',' within a single '-e' option now become members of a group with
> the first event specified as a group leader. Another '-e' option with
> multiple events creates separate group.
>
> All groups are created with regards to threads and cpus. Thus
> recording an event group within a 2 threads on server with
> 4 CPUs will create 8 separate groups.
Why not just set a rule that if -g is present then each -e CSV is a
separate group?
- Arnaldo
> Examples (first event in brackets is group leader):
>
> # 1 group (cpu-clock,task-clock)
> perf record --group -e cpu-clock,task-clock ls
> perf record --group parsed -e cpu-clock,task-clock ls
>
> # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
> perf record --group parsed -e cpu-clock,task-clock \
> -e minor-faults,major-faults ls
>
> # 1 group (cpu-clock,task-clock,minor-faults,major-faults)
> perf record --group -e cpu-clock,task-clock \
> -e minor-faults,major-faults ls
>
> # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults)
> perf record --group parsed -e cpu-clock,task-clock \
> -e minor-faults,major-faults -e instructions ls
>
> # 1 group (cpu-clock,task-clock,minor-faults,major-faults,instructions)
> perf record --group -e cpu-clock,task-clock \
> -e minor-faults,major-faults -e instructions ls
>
> Updated automated test to check on group_leader settings.
>
> Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
> ---
> tools/perf/Makefile | 2 ++
> tools/perf/builtin-record.c | 8 +++++---
> tools/perf/builtin-stat.c | 10 ++++++----
> tools/perf/builtin-test.c | 10 ++++++++++
> tools/perf/builtin-top.c | 8 +++++---
> tools/perf/perf.h | 3 ++-
> tools/perf/util/evlist.c | 4 ++--
> tools/perf/util/evlist.h | 3 ++-
> tools/perf/util/evsel.c | 32 +++++++++++++++++++++++++-------
> tools/perf/util/evsel.h | 9 ++++++---
> tools/perf/util/group.c | 22 ++++++++++++++++++++++
> tools/perf/util/group.h | 32 ++++++++++++++++++++++++++++++++
> tools/perf/util/parse-events.c | 18 ++++++++++++++++++
> tools/perf/util/parse-events.h | 3 ---
> tools/perf/util/python.c | 4 ++++
> tools/perf/util/top.h | 2 +-
> 16 files changed, 142 insertions(+), 28 deletions(-)
> create mode 100644 tools/perf/util/group.c
> create mode 100644 tools/perf/util/group.h
>
> diff --git a/tools/perf/Makefile b/tools/perf/Makefile
> index b492e3a..ea10b29 100644
> --- a/tools/perf/Makefile
> +++ b/tools/perf/Makefile
> @@ -317,6 +317,7 @@ LIB_H += util/cpumap.h
> LIB_H += util/top.h
> LIB_H += $(ARCH_INCLUDE)
> LIB_H += util/cgroup.h
> +LIB_H += util/group.h
>
> LIB_OBJS += $(OUTPUT)util/abspath.o
> LIB_OBJS += $(OUTPUT)util/alias.o
> @@ -378,6 +379,7 @@ LIB_OBJS += $(OUTPUT)util/util.o
> LIB_OBJS += $(OUTPUT)util/xyarray.o
> LIB_OBJS += $(OUTPUT)util/cpumap.o
> LIB_OBJS += $(OUTPUT)util/cgroup.o
> +LIB_OBJS += $(OUTPUT)util/group.o
>
> BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
>
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index be4e1ee..a2c7dc2 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -26,6 +26,7 @@
> #include "util/symbol.h"
> #include "util/cpumap.h"
> #include "util/thread_map.h"
> +#include "util/group.h"
>
> #include <unistd.h>
> #include <sched.h>
> @@ -203,7 +204,7 @@ static void perf_record__open(struct perf_record *rec)
> */
> bool time_needed = attr->sample_type & PERF_SAMPLE_TIME;
>
> - if (opts->group && pos != first)
> + if (group_is_single(opts->group) && pos != first)
> group_fd = first->fd;
> fallback_missing_features:
> if (opts->exclude_guest_missing)
> @@ -791,8 +792,9 @@ const struct option record_options[] = {
> OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"),
> OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages,
> "number of mmap data pages"),
> - OPT_BOOLEAN(0, "group", &record.opts.group,
> - "put the counters into a counter group"),
> + OPT_CALLBACK_DEFAULT(0, "group", &record.opts.group, "[parsed]",
> + "put the counters into a counter group",
> + group_parse, PERF_GROUP_NONE),
> OPT_BOOLEAN('g', "call-graph", &record.opts.call_graph,
> "do call-graph (stack chain/backtrace) recording"),
> OPT_INCR('v', "verbose", &verbose,
> diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
> index c941bb6..d0d3859 100644
> --- a/tools/perf/builtin-stat.c
> +++ b/tools/perf/builtin-stat.c
> @@ -55,6 +55,7 @@
> #include "util/cpumap.h"
> #include "util/thread.h"
> #include "util/thread_map.h"
> +#include "util/group.h"
>
> #include <sys/prctl.h>
> #include <math.h>
> @@ -193,7 +194,7 @@ static int big_num_opt = -1;
> static const char *cpu_list;
> static const char *csv_sep = NULL;
> static bool csv_output = false;
> -static bool group = false;
> +static enum perf_group_opt group;
> static const char *output_name = NULL;
> static FILE *output = NULL;
> static int output_fd;
> @@ -284,7 +285,7 @@ static int create_perf_stat_counter(struct perf_evsel *evsel,
> struct perf_event_attr *attr = &evsel->attr;
> struct xyarray *group_fd = NULL;
>
> - if (group && evsel != first)
> + if (group_is_single(group) && evsel != first)
> group_fd = first->fd;
>
> if (scale)
> @@ -1055,8 +1056,9 @@ static const struct option options[] = {
> "stat events on existing thread id"),
> OPT_BOOLEAN('a', "all-cpus", &system_wide,
> "system-wide collection from all CPUs"),
> - OPT_BOOLEAN('g', "group", &group,
> - "put the counters into a counter group"),
> + OPT_CALLBACK_DEFAULT('g', "group", &group, "[parsed]",
> + "put the counters into a counter group",
> + group_parse, PERF_GROUP_NONE),
> OPT_BOOLEAN('c', "scale", &scale,
> "scale/normalize counters"),
> OPT_INCR('v', "verbose", &verbose,
> diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
> index 1c5b980..babdd77 100644
> --- a/tools/perf/builtin-test.c
> +++ b/tools/perf/builtin-test.c
> @@ -14,6 +14,7 @@
> #include "util/symbol.h"
> #include "util/thread_map.h"
> #include "util/pmu.h"
> +#include "util/group.h"
> #include "../../include/linux/hw_breakpoint.h"
>
> #include <sys/mman.h>
> @@ -948,11 +949,14 @@ static int test__checkevent_pmu(struct perf_evlist *evlist)
> static int test__checkevent_list(struct perf_evlist *evlist)
> {
> struct perf_evsel *evsel;
> + struct perf_evsel *parsed_leader;
>
> TEST_ASSERT_VAL("wrong number of entries", 3 == evlist->nr_entries);
>
> /* r1 */
> evsel = list_entry(evlist->entries.next, struct perf_evsel, node);
> + parsed_leader = evsel;
> +
> TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->attr.type);
> TEST_ASSERT_VAL("wrong config", 1 == evsel->attr.config);
> TEST_ASSERT_VAL("wrong config1", 0 == evsel->attr.config1);
> @@ -961,6 +965,7 @@ static int test__checkevent_list(struct perf_evlist *evlist)
> TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->attr.exclude_kernel);
> TEST_ASSERT_VAL("wrong exclude_hv", !evsel->attr.exclude_hv);
> TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip);
> + TEST_ASSERT_VAL("wrong parsed_leader", parsed_leader);
>
> /* syscalls:sys_enter_open:k */
> evsel = list_entry(evsel->node.next, struct perf_evsel, node);
> @@ -973,6 +978,8 @@ static int test__checkevent_list(struct perf_evlist *evlist)
> TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->attr.exclude_kernel);
> TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv);
> TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip);
> + TEST_ASSERT_VAL("wrong parsed_leader",
> + evsel->parsed_leader == parsed_leader);
>
> /* 1:1:hp */
> evsel = list_entry(evsel->node.next, struct perf_evsel, node);
> @@ -982,6 +989,8 @@ static int test__checkevent_list(struct perf_evlist *evlist)
> TEST_ASSERT_VAL("wrong exclude_kernel", evsel->attr.exclude_kernel);
> TEST_ASSERT_VAL("wrong exclude_hv", !evsel->attr.exclude_hv);
> TEST_ASSERT_VAL("wrong precise_ip", evsel->attr.precise_ip);
> + TEST_ASSERT_VAL("wrong parsed_leader",
> + evsel->parsed_leader == parsed_leader);
>
> return 0;
> }
> @@ -1168,6 +1177,7 @@ static int test__PERF_RECORD(void)
> .no_delay = true,
> .freq = 10,
> .mmap_pages = 256,
> + .group = PERF_GROUP_NONE,
> };
> cpu_set_t *cpu_mask = NULL;
> size_t cpu_mask_size = 0;
> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> index e3c63ae..fd04361 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -38,6 +38,7 @@
> #include "util/cpumap.h"
> #include "util/xyarray.h"
> #include "util/sort.h"
> +#include "util/group.h"
>
> #include "util/debug.h"
>
> @@ -850,7 +851,7 @@ static void perf_top__start_counters(struct perf_top *top)
> struct perf_event_attr *attr = &counter->attr;
> struct xyarray *group_fd = NULL;
>
> - if (top->group && counter != first)
> + if (group_is_single(top->group) && counter != first)
> group_fd = first->fd;
>
> attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
> @@ -1153,8 +1154,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
> "dump the symbol table used for profiling"),
> OPT_INTEGER('f', "count-filter", &top.count_filter,
> "only display functions with more events than this"),
> - OPT_BOOLEAN('g', "group", &top.group,
> - "put the counters into a counter group"),
> + OPT_CALLBACK_DEFAULT('g', "group", &top.group, "[parsed]",
> + "put the counters into a counter group",
> + group_parse, PERF_GROUP_NONE),
> OPT_BOOLEAN('i', "inherit", &top.inherit,
> "child tasks inherit counters"),
> OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name",
> diff --git a/tools/perf/perf.h b/tools/perf/perf.h
> index 89e3355..b80b69d 100644
> --- a/tools/perf/perf.h
> +++ b/tools/perf/perf.h
> @@ -108,6 +108,7 @@ void get_term_dimensions(struct winsize *ws);
>
> #include "../../include/linux/perf_event.h"
> #include "util/types.h"
> +#include "util/group.h"
> #include <stdbool.h>
>
> struct perf_mmap {
> @@ -212,7 +213,6 @@ struct perf_record_opts {
> const char *target_tid;
> uid_t uid;
> bool call_graph;
> - bool group;
> bool inherit_stat;
> bool no_delay;
> bool no_inherit;
> @@ -232,6 +232,7 @@ struct perf_record_opts {
> u64 default_interval;
> u64 user_interval;
> const char *cpu_list;
> + enum perf_group_opt group;
> };
>
> #endif
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index 1986d80..c0bcffd 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -740,7 +740,7 @@ void perf_evlist__set_selected(struct perf_evlist *evlist,
> evlist->selected = evsel;
> }
>
> -int perf_evlist__open(struct perf_evlist *evlist, bool group)
> +int perf_evlist__open(struct perf_evlist *evlist, enum perf_group_opt group)
> {
> struct perf_evsel *evsel, *first;
> int err, ncpus, nthreads;
> @@ -750,7 +750,7 @@ int perf_evlist__open(struct perf_evlist *evlist, bool group)
> list_for_each_entry(evsel, &evlist->entries, node) {
> struct xyarray *group_fd = NULL;
>
> - if (group && evsel != first)
> + if (group_is_single(group) && evsel != first)
> group_fd = first->fd;
>
> err = perf_evsel__open(evsel, evlist->cpus, evlist->threads,
> diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
> index 21f1c9e..3115e8d 100644
> --- a/tools/perf/util/evlist.h
> +++ b/tools/perf/util/evlist.h
> @@ -6,6 +6,7 @@
> #include "../perf.h"
> #include "event.h"
> #include "util.h"
> +#include "group.h"
> #include <unistd.h>
>
> struct pollfd;
> @@ -78,7 +79,7 @@ struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
>
> union perf_event *perf_evlist__mmap_read(struct perf_evlist *self, int idx);
>
> -int perf_evlist__open(struct perf_evlist *evlist, bool group);
> +int perf_evlist__open(struct perf_evlist *evlist, enum perf_group_opt group);
>
> void perf_evlist__config_attrs(struct perf_evlist *evlist,
> struct perf_record_opts *opts);
> diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> index 0221700..50a305d 100644
> --- a/tools/perf/util/evsel.c
> +++ b/tools/perf/util/evsel.c
> @@ -14,6 +14,7 @@
> #include "util.h"
> #include "cpumap.h"
> #include "thread_map.h"
> +#include "group.h"
>
> #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
> #define GROUP_FD(group_fd, cpu) (*(int *)xyarray__entry(group_fd, cpu, 0))
> @@ -136,7 +137,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts,
> attr->comm = track;
>
> if (!opts->target_pid && !opts->target_tid && !opts->system_wide &&
> - (!opts->group || evsel == first)) {
> + (group_is_none(opts->group) || evsel == first)) {
> attr->disabled = 1;
> attr->enable_on_exec = 1;
> }
> @@ -293,8 +294,17 @@ int __perf_evsel__read(struct perf_evsel *evsel,
> return 0;
> }
>
> +static int parsed_leader_fd(struct perf_evsel *evsel,
> + int cpu, int thread)
> +{
> + BUG_ON(!evsel->parsed_leader);
> + /* The evsel->fd xyarray is initialized to -1. */
> + return FD(evsel->parsed_leader, cpu, thread);
> +}
> +
> static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
> - struct thread_map *threads, bool group,
> + struct thread_map *threads,
> + enum perf_group_opt group,
> struct xyarray *group_fds)
> {
> int cpu, thread;
> @@ -311,13 +321,19 @@ static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
> }
>
> for (cpu = 0; cpu < cpus->nr; cpu++) {
> - int group_fd = group_fds ? GROUP_FD(group_fds, cpu) : -1;
> + int group_fd = -1;
> +
> + if (group_is_single(group))
> + group_fd = group_fds ? GROUP_FD(group_fds, cpu) : -1;
>
> for (thread = 0; thread < threads->nr; thread++) {
>
> if (!evsel->cgrp)
> pid = threads->map[thread];
>
> + if (group_is_parsed(group))
> + group_fd = parsed_leader_fd(evsel, cpu, thread);
> +
> FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr,
> pid,
> cpus->map[cpu],
> @@ -327,7 +343,7 @@ static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
> goto out_close;
> }
>
> - if (group && group_fd == -1)
> + if (group_is_single(group) && group_fd == -1)
> group_fd = FD(evsel, cpu, thread);
> }
> }
> @@ -372,7 +388,7 @@ static struct {
> };
>
> int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
> - struct thread_map *threads, bool group,
> + struct thread_map *threads, enum perf_group_opt group,
> struct xyarray *group_fd)
> {
> if (cpus == NULL) {
> @@ -387,7 +403,8 @@ int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
> }
>
> int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
> - struct cpu_map *cpus, bool group,
> + struct cpu_map *cpus,
> + enum perf_group_opt group,
> struct xyarray *group_fd)
> {
> return __perf_evsel__open(evsel, cpus, &empty_thread_map.map, group,
> @@ -395,7 +412,8 @@ int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
> }
>
> int perf_evsel__open_per_thread(struct perf_evsel *evsel,
> - struct thread_map *threads, bool group,
> + struct thread_map *threads,
> + enum perf_group_opt group,
> struct xyarray *group_fd)
> {
> return __perf_evsel__open(evsel, &empty_cpu_map.map, threads, group,
> diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> index 3158ca3..ae4023f 100644
> --- a/tools/perf/util/evsel.h
> +++ b/tools/perf/util/evsel.h
> @@ -66,6 +66,7 @@ struct perf_evsel {
> void *data;
> } handler;
> bool supported;
> + struct perf_evsel *parsed_leader;
> };
>
> struct cpu_map;
> @@ -91,13 +92,15 @@ void perf_evsel__free_id(struct perf_evsel *evsel);
> void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
>
> int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
> - struct cpu_map *cpus, bool group,
> + struct cpu_map *cpus,
> + enum perf_group_opt group,
> struct xyarray *group_fds);
> int perf_evsel__open_per_thread(struct perf_evsel *evsel,
> - struct thread_map *threads, bool group,
> + struct thread_map *threads,
> + enum perf_group_opt group,
> struct xyarray *group_fds);
> int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
> - struct thread_map *threads, bool group,
> + struct thread_map *threads, enum perf_group_opt group,
> struct xyarray *group_fds);
> void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);
>
> diff --git a/tools/perf/util/group.c b/tools/perf/util/group.c
> new file mode 100644
> index 0000000..68d18a2
> --- /dev/null
> +++ b/tools/perf/util/group.c
> @@ -0,0 +1,22 @@
> +#include <linux/compiler.h>
> +#include "types.h"
> +#include "util.h"
> +#include "parse-options.h"
> +#include "group.h"
> +
> +int group_parse(const struct option *opt, const char *str,
> + int unset __used)
> +{
> + int *group_opt = (int *) opt->value;
> +
> + if (!str)
> + *group_opt = PERF_GROUP_SINGLE;
> + else if (!strcmp(str, "parsed"))
> + *group_opt = PERF_GROUP_PARSED;
> + else {
> + fprintf(stderr, "unknown group option value\n");
> + return -1;
> + }
> +
> + return 0;
> +}
> diff --git a/tools/perf/util/group.h b/tools/perf/util/group.h
> new file mode 100644
> index 0000000..f97520a
> --- /dev/null
> +++ b/tools/perf/util/group.h
> @@ -0,0 +1,32 @@
> +#ifndef __GROUP_H__
> +#define __GROUP_H__
> +
> +#include <stdbool.h>
> +
> +struct option;
> +
> +enum perf_group_opt {
> + PERF_GROUP_NONE,
> + PERF_GROUP_SINGLE,
> + PERF_GROUP_PARSED
> +};
> +
> +int group_parse(const struct option *opt, const char *str,
> + int unset);
> +
> +static inline bool group_is_none(enum perf_group_opt group)
> +{
> + return group == PERF_GROUP_NONE;
> +}
> +
> +static inline bool group_is_single(enum perf_group_opt group)
> +{
> + return group == PERF_GROUP_SINGLE;
> +}
> +
> +static inline bool group_is_parsed(enum perf_group_opt group)
> +{
> + return group == PERF_GROUP_PARSED;
> +}
> +
> +#endif /* __GROUP_H__ */
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index 5b3a0ef..b6bccab98 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -747,6 +747,18 @@ int parse_events_modifier(struct list_head *list, char *str)
> return 0;
> }
>
> +static void update_parsed_leader(struct list_head *list)
> +{
> + struct perf_evsel *evsel, *parsed_leader = NULL;
> +
> + list_for_each_entry(evsel, list, node) {
> + if (!parsed_leader)
> + parsed_leader = evsel;
> +
> + evsel->parsed_leader = parsed_leader;
> + }
> +}
> +
> int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
> {
> LIST_HEAD(list);
> @@ -761,6 +773,12 @@ int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
> parse_events__flush_buffer(buffer);
> parse_events__delete_buffer(buffer);
>
> + /*
> + * Populate the parsed_leader even if we failed,
> + * just to have complete data, because who knows.. ;)
> + */
> + update_parsed_leader(&list);
> +
> if (!ret) {
> int entries = idx - evlist->nr_entries;
> perf_evlist__splice_list_tail(evlist, &list, entries);
> diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
> index ca069f8..d6c4d5d 100644
> --- a/tools/perf/util/parse-events.h
> +++ b/tools/perf/util/parse-events.h
> @@ -64,9 +64,6 @@ void parse_events__free_terms(struct list_head *terms);
> int parse_events_modifier(struct list_head *list __used, char *str __used);
> int parse_events_add_tracepoint(struct list_head *list, int *idx,
> char *sys, char *event);
> -int parse_events_add_raw(struct perf_evlist *evlist, unsigned long config,
> - unsigned long config1, unsigned long config2,
> - char *mod);
> int parse_events_add_numeric(struct list_head *list, int *idx,
> unsigned long type, unsigned long config,
> struct list_head *head_config);
> diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
> index e03b58a..6030758 100644
> --- a/tools/perf/util/python.c
> +++ b/tools/perf/util/python.c
> @@ -7,6 +7,7 @@
> #include "event.h"
> #include "cpumap.h"
> #include "thread_map.h"
> +#include "group.h"
>
> /* Define PyVarObject_HEAD_INIT for python 2.5 */
> #ifndef PyVarObject_HEAD_INIT
> @@ -828,6 +829,9 @@ static PyObject *pyrf_evlist__open(struct pyrf_evlist *pevlist,
> if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &group))
> return NULL;
>
> + if (group)
> + group = PERF_GROUP_SINGLE;
> +
> if (perf_evlist__open(evlist, group) < 0) {
> PyErr_SetFromErrno(PyExc_OSError);
> return NULL;
> diff --git a/tools/perf/util/top.h b/tools/perf/util/top.h
> index ce61cb2..0d2cf8b 100644
> --- a/tools/perf/util/top.h
> +++ b/tools/perf/util/top.h
> @@ -33,7 +33,7 @@ struct perf_top {
> bool kptr_restrict_warned;
> bool vmlinux_warned;
> bool inherit;
> - bool group;
> + enum perf_group_opt group;
> bool sample_id_all_missing;
> bool exclude_guest_missing;
> bool dump_symtab;
> --
> 1.7.7.6
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