![Sebastian Andrzej Siewior](/assets/img/avatar_default.png)
Some of the tracers bring their own id or pid fields and we can end up having two of them. This patch adds a "perf_" prefix to the 'generic' fields so we avoid a clash of the member names. The change is visible in the babeltrace output: Before: $ babeltrace ./ctf-data/ [03:19:13.962131936] (+0.000001935) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 8 } [03:19:13.962133732] (+0.000001796) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 114 } ... Now: $ babeltrace ./ctf-data/ [03:19:13.962131936] (+0.000001935) cycles: { }, { perf_ip = 0xFFFFFFFF8105443A, perf_tid = 20714, perf_pid = 20714, perf_period = 8 } [03:19:13.962133732] (+0.000001796) cycles: { }, { perf_ip = 0xFFFFFFFF8105443A, perf_tid = 20714, perf_pid = 20714, perf_period = 114 } ... Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Namhyung Kim <namhyung@kernel.org> Reviewed-by: David Ahern <dsahern@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jeremie Galarneau <jgalar@efficios.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1424470628-5969-5-git-send-email-jolsa@kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
615 lines
14 KiB
C
615 lines
14 KiB
C
/*
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* CTF writing support via babeltrace.
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*
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* Copyright (C) 2014, Jiri Olsa <jolsa@redhat.com>
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* Copyright (C) 2014, Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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*
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* Released under the GPL v2. (and only v2, not any later version)
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*/
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#include <linux/compiler.h>
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#include <babeltrace/ctf-writer/writer.h>
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#include <babeltrace/ctf-writer/clock.h>
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#include <babeltrace/ctf-writer/stream.h>
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#include <babeltrace/ctf-writer/event.h>
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#include <babeltrace/ctf-writer/event-types.h>
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#include <babeltrace/ctf-writer/event-fields.h>
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#include <babeltrace/ctf/events.h>
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#include <traceevent/event-parse.h>
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#include "asm/bug.h"
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#include "data-convert-bt.h"
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#include "session.h"
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#include "util.h"
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#include "debug.h"
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#include "tool.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "machine.h"
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#define pr_N(n, fmt, ...) \
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eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
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#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr2(fmt, ...) pr_N(2, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_time2(t, fmt, ...) pr_time_N(2, debug_data_convert, t, pr_fmt(fmt), ##__VA_ARGS__)
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struct evsel_priv {
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struct bt_ctf_event_class *event_class;
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};
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struct ctf_writer {
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/* writer primitives */
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struct bt_ctf_writer *writer;
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struct bt_ctf_stream *stream;
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struct bt_ctf_stream_class *stream_class;
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struct bt_ctf_clock *clock;
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/* data types */
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union {
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struct {
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struct bt_ctf_field_type *s64;
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struct bt_ctf_field_type *u64;
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struct bt_ctf_field_type *s32;
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struct bt_ctf_field_type *u32;
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struct bt_ctf_field_type *string;
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struct bt_ctf_field_type *u64_hex;
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};
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struct bt_ctf_field_type *array[6];
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} data;
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};
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struct convert {
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struct perf_tool tool;
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struct ctf_writer writer;
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u64 events_size;
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u64 events_count;
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};
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static int value_set(struct bt_ctf_field_type *type,
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struct bt_ctf_event *event,
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const char *name, u64 val)
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{
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struct bt_ctf_field *field;
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bool sign = bt_ctf_field_type_integer_get_signed(type);
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int ret;
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field = bt_ctf_field_create(type);
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if (!field) {
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pr_err("failed to create a field %s\n", name);
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return -1;
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}
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if (sign) {
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ret = bt_ctf_field_signed_integer_set_value(field, val);
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if (ret) {
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pr_err("failed to set field value %s\n", name);
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goto err;
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}
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} else {
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ret = bt_ctf_field_unsigned_integer_set_value(field, val);
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if (ret) {
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pr_err("failed to set field value %s\n", name);
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goto err;
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}
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}
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ret = bt_ctf_event_set_payload(event, name, field);
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if (ret) {
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pr_err("failed to set payload %s\n", name);
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goto err;
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}
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pr2(" SET [%s = %" PRIu64 "]\n", name, val);
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err:
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bt_ctf_field_put(field);
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return ret;
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}
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#define __FUNC_VALUE_SET(_name, _val_type) \
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static __maybe_unused int value_set_##_name(struct ctf_writer *cw, \
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struct bt_ctf_event *event, \
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const char *name, \
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_val_type val) \
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{ \
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struct bt_ctf_field_type *type = cw->data._name; \
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return value_set(type, event, name, (u64) val); \
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}
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#define FUNC_VALUE_SET(_name) __FUNC_VALUE_SET(_name, _name)
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FUNC_VALUE_SET(s32)
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FUNC_VALUE_SET(u32)
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FUNC_VALUE_SET(s64)
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FUNC_VALUE_SET(u64)
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__FUNC_VALUE_SET(u64_hex, u64)
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static int add_generic_values(struct ctf_writer *cw,
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struct bt_ctf_event *event,
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struct perf_evsel *evsel,
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struct perf_sample *sample)
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{
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u64 type = evsel->attr.sample_type;
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int ret;
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/*
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* missing:
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* PERF_SAMPLE_TIME - not needed as we have it in
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* ctf event header
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* PERF_SAMPLE_READ - TODO
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* PERF_SAMPLE_CALLCHAIN - TODO
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* PERF_SAMPLE_RAW - tracepoint fields are handled separately
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* PERF_SAMPLE_BRANCH_STACK - TODO
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* PERF_SAMPLE_REGS_USER - TODO
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* PERF_SAMPLE_STACK_USER - TODO
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*/
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if (type & PERF_SAMPLE_IP) {
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ret = value_set_u64_hex(cw, event, "perf_ip", sample->ip);
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if (ret)
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return -1;
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}
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if (type & PERF_SAMPLE_TID) {
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ret = value_set_s32(cw, event, "perf_tid", sample->tid);
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if (ret)
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return -1;
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ret = value_set_s32(cw, event, "perf_pid", sample->pid);
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if (ret)
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return -1;
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}
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if ((type & PERF_SAMPLE_ID) ||
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(type & PERF_SAMPLE_IDENTIFIER)) {
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ret = value_set_u64(cw, event, "perf_id", sample->id);
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if (ret)
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return -1;
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}
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if (type & PERF_SAMPLE_STREAM_ID) {
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ret = value_set_u64(cw, event, "perf_stream_id", sample->stream_id);
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if (ret)
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return -1;
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}
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if (type & PERF_SAMPLE_CPU) {
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ret = value_set_u32(cw, event, "perf_cpu", sample->cpu);
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if (ret)
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return -1;
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}
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if (type & PERF_SAMPLE_PERIOD) {
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ret = value_set_u64(cw, event, "perf_period", sample->period);
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if (ret)
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return -1;
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}
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if (type & PERF_SAMPLE_WEIGHT) {
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ret = value_set_u64(cw, event, "perf_weight", sample->weight);
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if (ret)
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return -1;
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}
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if (type & PERF_SAMPLE_DATA_SRC) {
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ret = value_set_u64(cw, event, "perf_data_src",
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sample->data_src);
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if (ret)
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return -1;
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}
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if (type & PERF_SAMPLE_TRANSACTION) {
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ret = value_set_u64(cw, event, "perf_transaction",
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sample->transaction);
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if (ret)
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return -1;
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}
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return 0;
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}
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static int process_sample_event(struct perf_tool *tool,
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union perf_event *_event __maybe_unused,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct machine *machine __maybe_unused)
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{
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struct convert *c = container_of(tool, struct convert, tool);
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struct evsel_priv *priv = evsel->priv;
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struct ctf_writer *cw = &c->writer;
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struct bt_ctf_event_class *event_class;
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struct bt_ctf_event *event;
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int ret;
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if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
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return 0;
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event_class = priv->event_class;
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/* update stats */
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c->events_count++;
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c->events_size += _event->header.size;
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pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
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event = bt_ctf_event_create(event_class);
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if (!event) {
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pr_err("Failed to create an CTF event\n");
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return -1;
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}
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bt_ctf_clock_set_time(cw->clock, sample->time);
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ret = add_generic_values(cw, event, evsel, sample);
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if (ret)
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return -1;
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bt_ctf_stream_append_event(cw->stream, event);
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bt_ctf_event_put(event);
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return 0;
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}
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static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
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struct bt_ctf_event_class *event_class)
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{
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u64 type = evsel->attr.sample_type;
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/*
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* missing:
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* PERF_SAMPLE_TIME - not needed as we have it in
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* ctf event header
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* PERF_SAMPLE_READ - TODO
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* PERF_SAMPLE_CALLCHAIN - TODO
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* PERF_SAMPLE_RAW - tracepoint fields are handled separately
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* PERF_SAMPLE_BRANCH_STACK - TODO
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* PERF_SAMPLE_REGS_USER - TODO
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* PERF_SAMPLE_STACK_USER - TODO
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*/
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#define ADD_FIELD(cl, t, n) \
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do { \
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pr2(" field '%s'\n", n); \
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if (bt_ctf_event_class_add_field(cl, t, n)) { \
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pr_err("Failed to add field '%s;\n", n); \
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return -1; \
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} \
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} while (0)
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if (type & PERF_SAMPLE_IP)
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ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
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if (type & PERF_SAMPLE_TID) {
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ADD_FIELD(event_class, cw->data.s32, "perf_tid");
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ADD_FIELD(event_class, cw->data.s32, "perf_pid");
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}
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if ((type & PERF_SAMPLE_ID) ||
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(type & PERF_SAMPLE_IDENTIFIER))
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ADD_FIELD(event_class, cw->data.u64, "perf_id");
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if (type & PERF_SAMPLE_STREAM_ID)
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ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
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if (type & PERF_SAMPLE_CPU)
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ADD_FIELD(event_class, cw->data.u32, "perf_cpu");
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if (type & PERF_SAMPLE_PERIOD)
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ADD_FIELD(event_class, cw->data.u64, "perf_period");
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if (type & PERF_SAMPLE_WEIGHT)
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ADD_FIELD(event_class, cw->data.u64, "perf_weight");
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if (type & PERF_SAMPLE_DATA_SRC)
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ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
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if (type & PERF_SAMPLE_TRANSACTION)
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ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
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#undef ADD_FIELD
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return 0;
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}
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static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
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{
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struct bt_ctf_event_class *event_class;
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struct evsel_priv *priv;
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const char *name = perf_evsel__name(evsel);
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int ret;
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pr("Adding event '%s' (type %d)\n", name, evsel->attr.type);
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event_class = bt_ctf_event_class_create(name);
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if (!event_class)
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return -1;
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ret = add_generic_types(cw, evsel, event_class);
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if (ret)
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goto err;
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ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
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if (ret) {
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pr("Failed to add event class into stream.\n");
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goto err;
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}
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priv = malloc(sizeof(*priv));
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if (!priv)
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goto err;
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priv->event_class = event_class;
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evsel->priv = priv;
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return 0;
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err:
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bt_ctf_event_class_put(event_class);
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pr_err("Failed to add event '%s'.\n", name);
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return -1;
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}
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static int setup_events(struct ctf_writer *cw, struct perf_session *session)
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{
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struct perf_evlist *evlist = session->evlist;
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struct perf_evsel *evsel;
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int ret;
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evlist__for_each(evlist, evsel) {
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ret = add_event(cw, evsel);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int ctf_writer__setup_env(struct ctf_writer *cw,
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struct perf_session *session)
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{
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struct perf_header *header = &session->header;
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struct bt_ctf_writer *writer = cw->writer;
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#define ADD(__n, __v) \
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do { \
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if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
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return -1; \
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} while (0)
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ADD("host", header->env.hostname);
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ADD("sysname", "Linux");
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ADD("release", header->env.os_release);
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ADD("version", header->env.version);
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ADD("machine", header->env.arch);
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ADD("domain", "kernel");
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ADD("tracer_name", "perf");
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#undef ADD
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return 0;
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}
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static int ctf_writer__setup_clock(struct ctf_writer *cw)
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{
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struct bt_ctf_clock *clock = cw->clock;
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bt_ctf_clock_set_description(clock, "perf clock");
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#define SET(__n, __v) \
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do { \
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if (bt_ctf_clock_set_##__n(clock, __v)) \
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return -1; \
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} while (0)
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SET(frequency, 1000000000);
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SET(offset_s, 0);
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SET(offset, 0);
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SET(precision, 10);
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SET(is_absolute, 0);
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#undef SET
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return 0;
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}
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static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
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{
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struct bt_ctf_field_type *type;
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type = bt_ctf_field_type_integer_create(size);
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if (!type)
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return NULL;
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if (sign &&
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bt_ctf_field_type_integer_set_signed(type, 1))
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goto err;
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if (hex &&
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bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
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goto err;
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pr2("Created type: INTEGER %d-bit %ssigned %s\n",
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size, sign ? "un" : "", hex ? "hex" : "");
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return type;
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err:
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bt_ctf_field_type_put(type);
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return NULL;
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}
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static void ctf_writer__cleanup_data(struct ctf_writer *cw)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
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bt_ctf_field_type_put(cw->data.array[i]);
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}
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static int ctf_writer__init_data(struct ctf_writer *cw)
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{
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#define CREATE_INT_TYPE(type, size, sign, hex) \
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do { \
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(type) = create_int_type(size, sign, hex); \
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if (!(type)) \
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goto err; \
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} while (0)
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CREATE_INT_TYPE(cw->data.s64, 64, true, false);
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CREATE_INT_TYPE(cw->data.u64, 64, false, false);
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CREATE_INT_TYPE(cw->data.s32, 32, true, false);
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CREATE_INT_TYPE(cw->data.u32, 32, false, false);
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CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
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cw->data.string = bt_ctf_field_type_string_create();
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if (cw->data.string)
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return 0;
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err:
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ctf_writer__cleanup_data(cw);
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pr_err("Failed to create data types.\n");
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return -1;
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}
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static void ctf_writer__cleanup(struct ctf_writer *cw)
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{
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ctf_writer__cleanup_data(cw);
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bt_ctf_clock_put(cw->clock);
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bt_ctf_stream_put(cw->stream);
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bt_ctf_stream_class_put(cw->stream_class);
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bt_ctf_writer_put(cw->writer);
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/* and NULL all the pointers */
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memset(cw, 0, sizeof(*cw));
|
|
}
|
|
|
|
static int ctf_writer__init(struct ctf_writer *cw, const char *path)
|
|
{
|
|
struct bt_ctf_writer *writer;
|
|
struct bt_ctf_stream_class *stream_class;
|
|
struct bt_ctf_stream *stream;
|
|
struct bt_ctf_clock *clock;
|
|
|
|
/* CTF writer */
|
|
writer = bt_ctf_writer_create(path);
|
|
if (!writer)
|
|
goto err;
|
|
|
|
cw->writer = writer;
|
|
|
|
/* CTF clock */
|
|
clock = bt_ctf_clock_create("perf_clock");
|
|
if (!clock) {
|
|
pr("Failed to create CTF clock.\n");
|
|
goto err_cleanup;
|
|
}
|
|
|
|
cw->clock = clock;
|
|
|
|
if (ctf_writer__setup_clock(cw)) {
|
|
pr("Failed to setup CTF clock.\n");
|
|
goto err_cleanup;
|
|
}
|
|
|
|
/* CTF stream class */
|
|
stream_class = bt_ctf_stream_class_create("perf_stream");
|
|
if (!stream_class) {
|
|
pr("Failed to create CTF stream class.\n");
|
|
goto err_cleanup;
|
|
}
|
|
|
|
cw->stream_class = stream_class;
|
|
|
|
/* CTF clock stream setup */
|
|
if (bt_ctf_stream_class_set_clock(stream_class, clock)) {
|
|
pr("Failed to assign CTF clock to stream class.\n");
|
|
goto err_cleanup;
|
|
}
|
|
|
|
if (ctf_writer__init_data(cw))
|
|
goto err_cleanup;
|
|
|
|
/* CTF stream instance */
|
|
stream = bt_ctf_writer_create_stream(writer, stream_class);
|
|
if (!stream) {
|
|
pr("Failed to create CTF stream.\n");
|
|
goto err_cleanup;
|
|
}
|
|
|
|
cw->stream = stream;
|
|
|
|
/* CTF clock writer setup */
|
|
if (bt_ctf_writer_add_clock(writer, clock)) {
|
|
pr("Failed to assign CTF clock to writer.\n");
|
|
goto err_cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_cleanup:
|
|
ctf_writer__cleanup(cw);
|
|
err:
|
|
pr_err("Failed to setup CTF writer.\n");
|
|
return -1;
|
|
}
|
|
|
|
int bt_convert__perf2ctf(const char *input, const char *path)
|
|
{
|
|
struct perf_session *session;
|
|
struct perf_data_file file = {
|
|
.path = input,
|
|
.mode = PERF_DATA_MODE_READ,
|
|
};
|
|
struct convert c = {
|
|
.tool = {
|
|
.sample = process_sample_event,
|
|
.mmap = perf_event__process_mmap,
|
|
.mmap2 = perf_event__process_mmap2,
|
|
.comm = perf_event__process_comm,
|
|
.exit = perf_event__process_exit,
|
|
.fork = perf_event__process_fork,
|
|
.lost = perf_event__process_lost,
|
|
.tracing_data = perf_event__process_tracing_data,
|
|
.build_id = perf_event__process_build_id,
|
|
.ordered_events = true,
|
|
.ordering_requires_timestamps = true,
|
|
},
|
|
};
|
|
struct ctf_writer *cw = &c.writer;
|
|
int err = -1;
|
|
|
|
/* CTF writer */
|
|
if (ctf_writer__init(cw, path))
|
|
return -1;
|
|
|
|
/* perf.data session */
|
|
session = perf_session__new(&file, 0, NULL);
|
|
if (!session)
|
|
goto free_writer;
|
|
|
|
/* CTF writer env/clock setup */
|
|
if (ctf_writer__setup_env(cw, session))
|
|
goto free_session;
|
|
|
|
/* CTF events setup */
|
|
if (setup_events(cw, session))
|
|
goto free_session;
|
|
|
|
err = perf_session__process_events(session, &c.tool);
|
|
if (!err)
|
|
err = bt_ctf_stream_flush(cw->stream);
|
|
|
|
fprintf(stderr,
|
|
"[ perf data convert: Converted '%s' into CTF data '%s' ]\n",
|
|
file.path, path);
|
|
|
|
fprintf(stderr,
|
|
"[ perf data convert: Converted and wrote %.3f MB (%" PRIu64 " samples) ]\n",
|
|
(double) c.events_size / 1024.0 / 1024.0,
|
|
c.events_count);
|
|
|
|
/* its all good */
|
|
free_session:
|
|
perf_session__delete(session);
|
|
|
|
free_writer:
|
|
ctf_writer__cleanup(cw);
|
|
return err;
|
|
}
|