[tip:perf/core] perf evsel: Do not use globals in config()

From: tip-bot for Arnaldo Carvalho de Melo
Date: Wed Apr 13 2016 - 03:25:55 EST

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Commit-ID: e68ae9cf7d734e669bc0a981b4154f70d29b5059
Gitweb: http://git.kernel.org/tip/e68ae9cf7d734e669bc0a981b4154f70d29b5059
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 11 Apr 2016 18:15:29 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 11 Apr 2016 22:18:20 -0300

perf evsel: Do not use globals in config()

Instead receive a callchain_param pointer to configure callchain
aspects, not doing so if NULL is passed.

This will allow fine grained control over which evsels in an evlist
gets callchains enabled.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Milian Wolff <milian.wolff@xxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-2mupip6khc92mh5x4nw9to82@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/arch/x86/tests/perf-time-to-tsc.c | 2 +-
tools/perf/builtin-kvm.c | 2 +-
tools/perf/builtin-record.c | 2 +-
tools/perf/builtin-top.c | 2 +-
tools/perf/builtin-trace.c | 2 +-
tools/perf/tests/bpf.c | 2 +-
tools/perf/tests/code-reading.c | 2 +-
tools/perf/tests/keep-tracking.c | 2 +-
tools/perf/tests/openat-syscall-tp-fields.c | 2 +-
tools/perf/tests/perf-record.c | 2 +-
tools/perf/tests/switch-tracking.c | 2 +-
tools/perf/util/evlist.h | 5 ++++-
tools/perf/util/evsel.c | 7 ++++---
tools/perf/util/evsel.h | 5 ++++-
tools/perf/util/record.c | 5 +++--
15 files changed, 26 insertions(+), 18 deletions(-)

diff --git a/tools/perf/arch/x86/tests/perf-time-to-tsc.c b/tools/perf/arch/x86/tests/perf-time-to-tsc.c
index 9d29ee2..d4aa567 100644
--- a/tools/perf/arch/x86/tests/perf-time-to-tsc.c
+++ b/tools/perf/arch/x86/tests/perf-time-to-tsc.c
@@ -71,7 +71,7 @@ int test__perf_time_to_tsc(int subtest __maybe_unused)

CHECK__(parse_events(evlist, "cycles:u", NULL));

- perf_evlist__config(evlist, &opts);
+ perf_evlist__config(evlist, &opts, NULL);

evsel = perf_evlist__first(evlist);

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index bff6664..6487c06 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -982,7 +982,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
struct perf_evlist *evlist = kvm->evlist;
char sbuf[STRERR_BUFSIZE];

- perf_evlist__config(evlist, &kvm->opts);
+ perf_evlist__config(evlist, &kvm->opts, NULL);

/*
* Note: exclude_{guest,host} do not apply here.
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e64bd1e..eb6a199 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -284,7 +284,7 @@ static int record__open(struct record *rec)
struct record_opts *opts = &rec->opts;
int rc = 0;

- perf_evlist__config(evlist, opts);
+ perf_evlist__config(evlist, opts, &callchain_param);

evlist__for_each(evlist, pos) {
try_again:
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 8332149..8846df0 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -886,7 +886,7 @@ static int perf_top__start_counters(struct perf_top *top)
struct perf_evlist *evlist = top->evlist;
struct record_opts *opts = &top->record_opts;

- perf_evlist__config(evlist, opts);
+ perf_evlist__config(evlist, opts, &callchain_param);

evlist__for_each(evlist, counter) {
try_again:
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index cfa5ce8..08fb100 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2749,7 +2749,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
goto out_delete_evlist;
}

- perf_evlist__config(evlist, &trace->opts);
+ perf_evlist__config(evlist, &trace->opts, &callchain_param);

signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c
index 199501c..f31eed3 100644
--- a/tools/perf/tests/bpf.c
+++ b/tools/perf/tests/bpf.c
@@ -138,7 +138,7 @@ static int do_test(struct bpf_object *obj, int (*func)(void),
perf_evlist__splice_list_tail(evlist, &parse_evlist.list);
evlist->nr_groups = parse_evlist.nr_groups;

- perf_evlist__config(evlist, &opts);
+ perf_evlist__config(evlist, &opts, NULL);

err = perf_evlist__open(evlist);
if (err < 0) {
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index abd3f0e..68a69a1 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -532,7 +532,7 @@ static int do_test_code_reading(bool try_kcore)
goto out_put;
}

- perf_evlist__config(evlist, &opts);
+ perf_evlist__config(evlist, &opts, NULL);

evsel = perf_evlist__first(evlist);

diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c
index ddb78fa..614e45a 100644
--- a/tools/perf/tests/keep-tracking.c
+++ b/tools/perf/tests/keep-tracking.c
@@ -80,7 +80,7 @@ int test__keep_tracking(int subtest __maybe_unused)
CHECK__(parse_events(evlist, "dummy:u", NULL));
CHECK__(parse_events(evlist, "cycles:u", NULL));

- perf_evlist__config(evlist, &opts);
+ perf_evlist__config(evlist, &opts, NULL);

evsel = perf_evlist__first(evlist);

diff --git a/tools/perf/tests/openat-syscall-tp-fields.c b/tools/perf/tests/openat-syscall-tp-fields.c
index eb99a105..4344fe4 100644
--- a/tools/perf/tests/openat-syscall-tp-fields.c
+++ b/tools/perf/tests/openat-syscall-tp-fields.c
@@ -44,7 +44,7 @@ int test__syscall_openat_tp_fields(int subtest __maybe_unused)
goto out_delete_evlist;
}

- perf_evsel__config(evsel, &opts);
+ perf_evsel__config(evsel, &opts, NULL);

thread_map__set_pid(evlist->threads, 0, getpid());

diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c
index 1cc78ce..b836ee6a 100644
--- a/tools/perf/tests/perf-record.c
+++ b/tools/perf/tests/perf-record.c
@@ -99,7 +99,7 @@ int test__PERF_RECORD(int subtest __maybe_unused)
perf_evsel__set_sample_bit(evsel, CPU);
perf_evsel__set_sample_bit(evsel, TID);
perf_evsel__set_sample_bit(evsel, TIME);
- perf_evlist__config(evlist, &opts);
+ perf_evlist__config(evlist, &opts, NULL);

err = sched__get_first_possible_cpu(evlist->workload.pid, &cpu_mask);
if (err < 0) {
diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c
index ebd8016..39a689b 100644
--- a/tools/perf/tests/switch-tracking.c
+++ b/tools/perf/tests/switch-tracking.c
@@ -417,7 +417,7 @@ int test__switch_tracking(int subtest __maybe_unused)
perf_evsel__set_sample_bit(tracking_evsel, TIME);

/* Config events */
- perf_evlist__config(evlist, &opts);
+ perf_evlist__config(evlist, &opts, NULL);

/* Check moved event is still at the front */
if (cycles_evsel != perf_evlist__first(evlist)) {
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index a0d1522..8db9228 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -123,11 +123,14 @@ void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);
int perf_evlist__open(struct perf_evlist *evlist);
void perf_evlist__close(struct perf_evlist *evlist);

+struct callchain_param;
+
void perf_evlist__set_id_pos(struct perf_evlist *evlist);
bool perf_can_sample_identifier(void);
bool perf_can_record_switch_events(void);
bool perf_can_record_cpu_wide(void);
-void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts);
+void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
+ struct callchain_param *callchain);
int record_opts__config(struct record_opts *opts);

int perf_evlist__prepare_workload(struct perf_evlist *evlist,
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 3fd7c2c..8425272 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -737,7 +737,8 @@ static void apply_config_terms(struct perf_evsel *evsel,
* enable/disable events specifically, as there's no
* initial traced exec call.
*/
-void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
+void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
+ struct callchain_param *callchain)
{
struct perf_evsel *leader = evsel->leader;
struct perf_event_attr *attr = &evsel->attr;
@@ -812,8 +813,8 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
if (perf_evsel__is_function_event(evsel))
evsel->attr.exclude_callchain_user = 1;

- if (callchain_param.enabled && !evsel->no_aux_samples)
- perf_evsel__config_callgraph(evsel, opts, &callchain_param);
+ if (callchain && callchain->enabled && !evsel->no_aux_samples)
+ perf_evsel__config_callgraph(evsel, opts, callchain);

if (opts->sample_intr_regs) {
attr->sample_regs_intr = opts->sample_intr_regs;
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index ab3632c..7e45d21 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -178,8 +178,11 @@ void perf_evsel__init(struct perf_evsel *evsel,
void perf_evsel__exit(struct perf_evsel *evsel);
void perf_evsel__delete(struct perf_evsel *evsel);

+struct callchain_param;
+
void perf_evsel__config(struct perf_evsel *evsel,
- struct record_opts *opts);
+ struct record_opts *opts,
+ struct callchain_param *callchain);

int __perf_evsel__sample_size(u64 sample_type);
void perf_evsel__calc_id_pos(struct perf_evsel *evsel);
diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c
index 0467367..481792c 100644
--- a/tools/perf/util/record.c
+++ b/tools/perf/util/record.c
@@ -129,7 +129,8 @@ bool perf_can_record_cpu_wide(void)
return true;
}

-void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)
+void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
+ struct callchain_param *callchain)
{
struct perf_evsel *evsel;
bool use_sample_identifier = false;
@@ -148,7 +149,7 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)
use_comm_exec = perf_can_comm_exec();

evlist__for_each(evlist, evsel) {
- perf_evsel__config(evsel, opts);
+ perf_evsel__config(evsel, opts, callchain);
if (evsel->tracking && use_comm_exec)
evsel->attr.comm_exec = 1;
}

Next message: Ingo Molnar: "Re: [PATCH 0/4] Decouple X86_32 dependency from the ISA Kconfig option"
Previous message: tip-bot for Arnaldo Carvalho de Melo: "[tip:perf/core] perf trace: Exclude the kernel part of the callchain leading to a syscall"
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