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https://github.com/edk2-porting/linux-next.git
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d4ae421392
When converting int values, perf first extractes it to a ulonglong, then feeds it to babeltrace as a signed value. For negative 32 bit values (for example, return values of failed syscalls), the extracted data should be something like 0xfffffffe (-2). It becomes a large int64 value. Babeltrace denies to insert it with bt_ctf_field_signed_integer_set_value() because it is larger than 0x7fffffff, the largest positive value a 32 bit int can be. This patch introduces adjust_signedness(), which fills high bits of ulonglong with 1 if the value is negative. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jeremie Galarneau <jgalar@efficios.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/r/1429372220-6406-8-git-send-email-jolsa@kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> [ s/signess/signedness/g ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1184 lines
26 KiB
C
1184 lines
26 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-ir/utils.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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#define MAX_CPUS 4096
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struct ctf_stream {
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struct bt_ctf_stream *stream;
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int cpu;
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u32 count;
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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 ctf_stream **stream;
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int stream_cnt;
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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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/* Ordered events configured queue size. */
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u64 queue_size;
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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 struct bt_ctf_field_type*
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get_tracepoint_field_type(struct ctf_writer *cw, struct format_field *field)
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{
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unsigned long flags = field->flags;
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if (flags & FIELD_IS_STRING)
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return cw->data.string;
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if (!(flags & FIELD_IS_SIGNED)) {
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/* unsigned long are mostly pointers */
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if (flags & FIELD_IS_LONG || flags & FIELD_IS_POINTER)
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return cw->data.u64_hex;
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}
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if (flags & FIELD_IS_SIGNED) {
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if (field->size == 8)
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return cw->data.s64;
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else
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return cw->data.s32;
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}
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if (field->size == 8)
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return cw->data.u64;
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else
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return cw->data.u32;
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}
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static unsigned long long adjust_signedness(unsigned long long value_int, int size)
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{
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unsigned long long value_mask;
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/*
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* value_mask = (1 << (size * 8 - 1)) - 1.
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* Directly set value_mask for code readers.
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*/
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switch (size) {
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case 1:
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value_mask = 0x7fULL;
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break;
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case 2:
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value_mask = 0x7fffULL;
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break;
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case 4:
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value_mask = 0x7fffffffULL;
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break;
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case 8:
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/*
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* For 64 bit value, return it self. There is no need
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* to fill high bit.
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*/
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/* Fall through */
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default:
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/* BUG! */
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return value_int;
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}
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/* If it is a positive value, don't adjust. */
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if ((value_int & (~0ULL - value_mask)) == 0)
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return value_int;
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/* Fill upper part of value_int with 1 to make it a negative long long. */
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return (value_int & value_mask) | ~value_mask;
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}
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static int add_tracepoint_field_value(struct ctf_writer *cw,
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struct bt_ctf_event_class *event_class,
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struct bt_ctf_event *event,
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struct perf_sample *sample,
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struct format_field *fmtf)
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{
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struct bt_ctf_field_type *type;
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struct bt_ctf_field *array_field;
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struct bt_ctf_field *field;
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const char *name = fmtf->name;
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void *data = sample->raw_data;
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unsigned long flags = fmtf->flags;
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unsigned int n_items;
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unsigned int i;
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unsigned int offset;
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unsigned int len;
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int ret;
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name = fmtf->alias;
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offset = fmtf->offset;
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len = fmtf->size;
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if (flags & FIELD_IS_STRING)
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flags &= ~FIELD_IS_ARRAY;
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if (flags & FIELD_IS_DYNAMIC) {
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unsigned long long tmp_val;
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tmp_val = pevent_read_number(fmtf->event->pevent,
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data + offset, len);
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offset = tmp_val;
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len = offset >> 16;
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offset &= 0xffff;
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}
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if (flags & FIELD_IS_ARRAY) {
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type = bt_ctf_event_class_get_field_by_name(
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event_class, name);
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array_field = bt_ctf_field_create(type);
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bt_ctf_field_type_put(type);
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if (!array_field) {
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pr_err("Failed to create array type %s\n", name);
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return -1;
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}
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len = fmtf->size / fmtf->arraylen;
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n_items = fmtf->arraylen;
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} else {
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n_items = 1;
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array_field = NULL;
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}
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type = get_tracepoint_field_type(cw, fmtf);
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for (i = 0; i < n_items; i++) {
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if (flags & FIELD_IS_ARRAY)
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field = bt_ctf_field_array_get_field(array_field, i);
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else
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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 (flags & FIELD_IS_STRING)
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ret = bt_ctf_field_string_set_value(field,
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data + offset + i * len);
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else {
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unsigned long long value_int;
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value_int = pevent_read_number(
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fmtf->event->pevent,
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data + offset + i * len, len);
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if (!(flags & FIELD_IS_SIGNED))
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ret = bt_ctf_field_unsigned_integer_set_value(
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field, value_int);
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else
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ret = bt_ctf_field_signed_integer_set_value(
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field, adjust_signedness(value_int, len));
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}
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if (ret) {
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pr_err("failed to set file value %s\n", name);
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goto err_put_field;
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}
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if (!(flags & FIELD_IS_ARRAY)) {
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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_put_field;
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}
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}
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bt_ctf_field_put(field);
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}
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if (flags & FIELD_IS_ARRAY) {
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ret = bt_ctf_event_set_payload(event, name, array_field);
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if (ret) {
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pr_err("Failed add payload array %s\n", name);
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return -1;
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}
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bt_ctf_field_put(array_field);
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}
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return 0;
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err_put_field:
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bt_ctf_field_put(field);
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return -1;
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}
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static int add_tracepoint_fields_values(struct ctf_writer *cw,
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struct bt_ctf_event_class *event_class,
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struct bt_ctf_event *event,
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struct format_field *fields,
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struct perf_sample *sample)
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{
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struct format_field *field;
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int ret;
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for (field = fields; field; field = field->next) {
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ret = add_tracepoint_field_value(cw, event_class, event, sample,
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field);
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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 add_tracepoint_values(struct ctf_writer *cw,
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struct bt_ctf_event_class *event_class,
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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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struct format_field *common_fields = evsel->tp_format->format.common_fields;
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struct format_field *fields = evsel->tp_format->format.fields;
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int ret;
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ret = add_tracepoint_fields_values(cw, event_class, event,
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common_fields, sample);
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if (!ret)
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ret = add_tracepoint_fields_values(cw, event_class, event,
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fields, sample);
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return ret;
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}
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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_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 ctf_stream__flush(struct ctf_stream *cs)
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{
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int err = 0;
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if (cs) {
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err = bt_ctf_stream_flush(cs->stream);
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if (err)
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pr_err("CTF stream %d flush failed\n", cs->cpu);
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pr("Flush stream for cpu %d (%u samples)\n",
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cs->cpu, cs->count);
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cs->count = 0;
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}
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return err;
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}
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static struct ctf_stream *ctf_stream__create(struct ctf_writer *cw, int cpu)
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{
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struct ctf_stream *cs;
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struct bt_ctf_field *pkt_ctx = NULL;
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struct bt_ctf_field *cpu_field = NULL;
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struct bt_ctf_stream *stream = NULL;
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int ret;
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cs = zalloc(sizeof(*cs));
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if (!cs) {
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pr_err("Failed to allocate ctf stream\n");
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return NULL;
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}
|
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|
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stream = bt_ctf_writer_create_stream(cw->writer, cw->stream_class);
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if (!stream) {
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pr_err("Failed to create CTF stream\n");
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goto out;
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}
|
|
|
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pkt_ctx = bt_ctf_stream_get_packet_context(stream);
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if (!pkt_ctx) {
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pr_err("Failed to obtain packet context\n");
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goto out;
|
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}
|
|
|
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cpu_field = bt_ctf_field_structure_get_field(pkt_ctx, "cpu_id");
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bt_ctf_field_put(pkt_ctx);
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if (!cpu_field) {
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pr_err("Failed to obtain cpu field\n");
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goto out;
|
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}
|
|
|
|
ret = bt_ctf_field_unsigned_integer_set_value(cpu_field, (u32) cpu);
|
|
if (ret) {
|
|
pr_err("Failed to update CPU number\n");
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goto out;
|
|
}
|
|
|
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bt_ctf_field_put(cpu_field);
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|
|
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cs->cpu = cpu;
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cs->stream = stream;
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return cs;
|
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|
|
out:
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if (cpu_field)
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bt_ctf_field_put(cpu_field);
|
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if (stream)
|
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bt_ctf_stream_put(stream);
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|
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free(cs);
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return NULL;
|
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}
|
|
|
|
static void ctf_stream__delete(struct ctf_stream *cs)
|
|
{
|
|
if (cs) {
|
|
bt_ctf_stream_put(cs->stream);
|
|
free(cs);
|
|
}
|
|
}
|
|
|
|
static struct ctf_stream *ctf_stream(struct ctf_writer *cw, int cpu)
|
|
{
|
|
struct ctf_stream *cs = cw->stream[cpu];
|
|
|
|
if (!cs) {
|
|
cs = ctf_stream__create(cw, cpu);
|
|
cw->stream[cpu] = cs;
|
|
}
|
|
|
|
return cs;
|
|
}
|
|
|
|
static int get_sample_cpu(struct ctf_writer *cw, struct perf_sample *sample,
|
|
struct perf_evsel *evsel)
|
|
{
|
|
int cpu = 0;
|
|
|
|
if (evsel->attr.sample_type & PERF_SAMPLE_CPU)
|
|
cpu = sample->cpu;
|
|
|
|
if (cpu > cw->stream_cnt) {
|
|
pr_err("Event was recorded for CPU %d, limit is at %d.\n",
|
|
cpu, cw->stream_cnt);
|
|
cpu = 0;
|
|
}
|
|
|
|
return cpu;
|
|
}
|
|
|
|
#define STREAM_FLUSH_COUNT 100000
|
|
|
|
/*
|
|
* Currently we have no other way to determine the
|
|
* time for the stream flush other than keep track
|
|
* of the number of events and check it against
|
|
* threshold.
|
|
*/
|
|
static bool is_flush_needed(struct ctf_stream *cs)
|
|
{
|
|
return cs->count >= STREAM_FLUSH_COUNT;
|
|
}
|
|
|
|
static int process_sample_event(struct perf_tool *tool,
|
|
union perf_event *_event __maybe_unused,
|
|
struct perf_sample *sample,
|
|
struct perf_evsel *evsel,
|
|
struct machine *machine __maybe_unused)
|
|
{
|
|
struct convert *c = container_of(tool, struct convert, tool);
|
|
struct evsel_priv *priv = evsel->priv;
|
|
struct ctf_writer *cw = &c->writer;
|
|
struct ctf_stream *cs;
|
|
struct bt_ctf_event_class *event_class;
|
|
struct bt_ctf_event *event;
|
|
int ret;
|
|
|
|
if (WARN_ONCE(!priv, "Failed to setup all events.\n"))
|
|
return 0;
|
|
|
|
event_class = priv->event_class;
|
|
|
|
/* update stats */
|
|
c->events_count++;
|
|
c->events_size += _event->header.size;
|
|
|
|
pr_time2(sample->time, "sample %" PRIu64 "\n", c->events_count);
|
|
|
|
event = bt_ctf_event_create(event_class);
|
|
if (!event) {
|
|
pr_err("Failed to create an CTF event\n");
|
|
return -1;
|
|
}
|
|
|
|
bt_ctf_clock_set_time(cw->clock, sample->time);
|
|
|
|
ret = add_generic_values(cw, event, evsel, sample);
|
|
if (ret)
|
|
return -1;
|
|
|
|
if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
|
|
ret = add_tracepoint_values(cw, event_class, event,
|
|
evsel, sample);
|
|
if (ret)
|
|
return -1;
|
|
}
|
|
|
|
cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
|
|
if (cs) {
|
|
if (is_flush_needed(cs))
|
|
ctf_stream__flush(cs);
|
|
|
|
cs->count++;
|
|
bt_ctf_stream_append_event(cs->stream, event);
|
|
}
|
|
|
|
bt_ctf_event_put(event);
|
|
return cs ? 0 : -1;
|
|
}
|
|
|
|
/* If dup < 0, add a prefix. Else, add _dupl_X suffix. */
|
|
static char *change_name(char *name, char *orig_name, int dup)
|
|
{
|
|
char *new_name = NULL;
|
|
size_t len;
|
|
|
|
if (!name)
|
|
name = orig_name;
|
|
|
|
if (dup >= 10)
|
|
goto out;
|
|
/*
|
|
* Add '_' prefix to potential keywork. According to
|
|
* Mathieu Desnoyers (https://lkml.org/lkml/2015/1/23/652),
|
|
* futher CTF spec updating may require us to use '$'.
|
|
*/
|
|
if (dup < 0)
|
|
len = strlen(name) + sizeof("_");
|
|
else
|
|
len = strlen(orig_name) + sizeof("_dupl_X");
|
|
|
|
new_name = malloc(len);
|
|
if (!new_name)
|
|
goto out;
|
|
|
|
if (dup < 0)
|
|
snprintf(new_name, len, "_%s", name);
|
|
else
|
|
snprintf(new_name, len, "%s_dupl_%d", orig_name, dup);
|
|
|
|
out:
|
|
if (name != orig_name)
|
|
free(name);
|
|
return new_name;
|
|
}
|
|
|
|
static int event_class_add_field(struct bt_ctf_event_class *event_class,
|
|
struct bt_ctf_field_type *type,
|
|
struct format_field *field)
|
|
{
|
|
struct bt_ctf_field_type *t = NULL;
|
|
char *name;
|
|
int dup = 1;
|
|
int ret;
|
|
|
|
/* alias was already assigned */
|
|
if (field->alias != field->name)
|
|
return bt_ctf_event_class_add_field(event_class, type,
|
|
(char *)field->alias);
|
|
|
|
name = field->name;
|
|
|
|
/* If 'name' is a keywork, add prefix. */
|
|
if (bt_ctf_validate_identifier(name))
|
|
name = change_name(name, field->name, -1);
|
|
|
|
if (!name) {
|
|
pr_err("Failed to fix invalid identifier.");
|
|
return -1;
|
|
}
|
|
while ((t = bt_ctf_event_class_get_field_by_name(event_class, name))) {
|
|
bt_ctf_field_type_put(t);
|
|
name = change_name(name, field->name, dup++);
|
|
if (!name) {
|
|
pr_err("Failed to create dup name for '%s'\n", field->name);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
ret = bt_ctf_event_class_add_field(event_class, type, name);
|
|
if (!ret)
|
|
field->alias = name;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int add_tracepoint_fields_types(struct ctf_writer *cw,
|
|
struct format_field *fields,
|
|
struct bt_ctf_event_class *event_class)
|
|
{
|
|
struct format_field *field;
|
|
int ret;
|
|
|
|
for (field = fields; field; field = field->next) {
|
|
struct bt_ctf_field_type *type;
|
|
unsigned long flags = field->flags;
|
|
|
|
pr2(" field '%s'\n", field->name);
|
|
|
|
type = get_tracepoint_field_type(cw, field);
|
|
if (!type)
|
|
return -1;
|
|
|
|
/*
|
|
* A string is an array of chars. For this we use the string
|
|
* type and don't care that it is an array. What we don't
|
|
* support is an array of strings.
|
|
*/
|
|
if (flags & FIELD_IS_STRING)
|
|
flags &= ~FIELD_IS_ARRAY;
|
|
|
|
if (flags & FIELD_IS_ARRAY)
|
|
type = bt_ctf_field_type_array_create(type, field->arraylen);
|
|
|
|
ret = event_class_add_field(event_class, type, field);
|
|
|
|
if (flags & FIELD_IS_ARRAY)
|
|
bt_ctf_field_type_put(type);
|
|
|
|
if (ret) {
|
|
pr_err("Failed to add field '%s': %d\n",
|
|
field->name, ret);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int add_tracepoint_types(struct ctf_writer *cw,
|
|
struct perf_evsel *evsel,
|
|
struct bt_ctf_event_class *class)
|
|
{
|
|
struct format_field *common_fields = evsel->tp_format->format.common_fields;
|
|
struct format_field *fields = evsel->tp_format->format.fields;
|
|
int ret;
|
|
|
|
ret = add_tracepoint_fields_types(cw, common_fields, class);
|
|
if (!ret)
|
|
ret = add_tracepoint_fields_types(cw, fields, class);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
|
|
struct bt_ctf_event_class *event_class)
|
|
{
|
|
u64 type = evsel->attr.sample_type;
|
|
|
|
/*
|
|
* missing:
|
|
* PERF_SAMPLE_TIME - not needed as we have it in
|
|
* ctf event header
|
|
* PERF_SAMPLE_READ - TODO
|
|
* PERF_SAMPLE_CALLCHAIN - TODO
|
|
* PERF_SAMPLE_RAW - tracepoint fields are handled separately
|
|
* PERF_SAMPLE_BRANCH_STACK - TODO
|
|
* PERF_SAMPLE_REGS_USER - TODO
|
|
* PERF_SAMPLE_STACK_USER - TODO
|
|
*/
|
|
|
|
#define ADD_FIELD(cl, t, n) \
|
|
do { \
|
|
pr2(" field '%s'\n", n); \
|
|
if (bt_ctf_event_class_add_field(cl, t, n)) { \
|
|
pr_err("Failed to add field '%s';\n", n); \
|
|
return -1; \
|
|
} \
|
|
} while (0)
|
|
|
|
if (type & PERF_SAMPLE_IP)
|
|
ADD_FIELD(event_class, cw->data.u64_hex, "perf_ip");
|
|
|
|
if (type & PERF_SAMPLE_TID) {
|
|
ADD_FIELD(event_class, cw->data.s32, "perf_tid");
|
|
ADD_FIELD(event_class, cw->data.s32, "perf_pid");
|
|
}
|
|
|
|
if ((type & PERF_SAMPLE_ID) ||
|
|
(type & PERF_SAMPLE_IDENTIFIER))
|
|
ADD_FIELD(event_class, cw->data.u64, "perf_id");
|
|
|
|
if (type & PERF_SAMPLE_STREAM_ID)
|
|
ADD_FIELD(event_class, cw->data.u64, "perf_stream_id");
|
|
|
|
if (type & PERF_SAMPLE_PERIOD)
|
|
ADD_FIELD(event_class, cw->data.u64, "perf_period");
|
|
|
|
if (type & PERF_SAMPLE_WEIGHT)
|
|
ADD_FIELD(event_class, cw->data.u64, "perf_weight");
|
|
|
|
if (type & PERF_SAMPLE_DATA_SRC)
|
|
ADD_FIELD(event_class, cw->data.u64, "perf_data_src");
|
|
|
|
if (type & PERF_SAMPLE_TRANSACTION)
|
|
ADD_FIELD(event_class, cw->data.u64, "perf_transaction");
|
|
|
|
#undef ADD_FIELD
|
|
return 0;
|
|
}
|
|
|
|
static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
|
|
{
|
|
struct bt_ctf_event_class *event_class;
|
|
struct evsel_priv *priv;
|
|
const char *name = perf_evsel__name(evsel);
|
|
int ret;
|
|
|
|
pr("Adding event '%s' (type %d)\n", name, evsel->attr.type);
|
|
|
|
event_class = bt_ctf_event_class_create(name);
|
|
if (!event_class)
|
|
return -1;
|
|
|
|
ret = add_generic_types(cw, evsel, event_class);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
|
|
ret = add_tracepoint_types(cw, evsel, event_class);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
|
|
if (ret) {
|
|
pr("Failed to add event class into stream.\n");
|
|
goto err;
|
|
}
|
|
|
|
priv = malloc(sizeof(*priv));
|
|
if (!priv)
|
|
goto err;
|
|
|
|
priv->event_class = event_class;
|
|
evsel->priv = priv;
|
|
return 0;
|
|
|
|
err:
|
|
bt_ctf_event_class_put(event_class);
|
|
pr_err("Failed to add event '%s'.\n", name);
|
|
return -1;
|
|
}
|
|
|
|
static int setup_events(struct ctf_writer *cw, struct perf_session *session)
|
|
{
|
|
struct perf_evlist *evlist = session->evlist;
|
|
struct perf_evsel *evsel;
|
|
int ret;
|
|
|
|
evlist__for_each(evlist, evsel) {
|
|
ret = add_event(cw, evsel);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int setup_streams(struct ctf_writer *cw, struct perf_session *session)
|
|
{
|
|
struct ctf_stream **stream;
|
|
struct perf_header *ph = &session->header;
|
|
int ncpus;
|
|
|
|
/*
|
|
* Try to get the number of cpus used in the data file,
|
|
* if not present fallback to the MAX_CPUS.
|
|
*/
|
|
ncpus = ph->env.nr_cpus_avail ?: MAX_CPUS;
|
|
|
|
stream = zalloc(sizeof(*stream) * ncpus);
|
|
if (!stream) {
|
|
pr_err("Failed to allocate streams.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
cw->stream = stream;
|
|
cw->stream_cnt = ncpus;
|
|
return 0;
|
|
}
|
|
|
|
static void free_streams(struct ctf_writer *cw)
|
|
{
|
|
int cpu;
|
|
|
|
for (cpu = 0; cpu < cw->stream_cnt; cpu++)
|
|
ctf_stream__delete(cw->stream[cpu]);
|
|
|
|
free(cw->stream);
|
|
}
|
|
|
|
static int ctf_writer__setup_env(struct ctf_writer *cw,
|
|
struct perf_session *session)
|
|
{
|
|
struct perf_header *header = &session->header;
|
|
struct bt_ctf_writer *writer = cw->writer;
|
|
|
|
#define ADD(__n, __v) \
|
|
do { \
|
|
if (bt_ctf_writer_add_environment_field(writer, __n, __v)) \
|
|
return -1; \
|
|
} while (0)
|
|
|
|
ADD("host", header->env.hostname);
|
|
ADD("sysname", "Linux");
|
|
ADD("release", header->env.os_release);
|
|
ADD("version", header->env.version);
|
|
ADD("machine", header->env.arch);
|
|
ADD("domain", "kernel");
|
|
ADD("tracer_name", "perf");
|
|
|
|
#undef ADD
|
|
return 0;
|
|
}
|
|
|
|
static int ctf_writer__setup_clock(struct ctf_writer *cw)
|
|
{
|
|
struct bt_ctf_clock *clock = cw->clock;
|
|
|
|
bt_ctf_clock_set_description(clock, "perf clock");
|
|
|
|
#define SET(__n, __v) \
|
|
do { \
|
|
if (bt_ctf_clock_set_##__n(clock, __v)) \
|
|
return -1; \
|
|
} while (0)
|
|
|
|
SET(frequency, 1000000000);
|
|
SET(offset_s, 0);
|
|
SET(offset, 0);
|
|
SET(precision, 10);
|
|
SET(is_absolute, 0);
|
|
|
|
#undef SET
|
|
return 0;
|
|
}
|
|
|
|
static struct bt_ctf_field_type *create_int_type(int size, bool sign, bool hex)
|
|
{
|
|
struct bt_ctf_field_type *type;
|
|
|
|
type = bt_ctf_field_type_integer_create(size);
|
|
if (!type)
|
|
return NULL;
|
|
|
|
if (sign &&
|
|
bt_ctf_field_type_integer_set_signed(type, 1))
|
|
goto err;
|
|
|
|
if (hex &&
|
|
bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
|
|
goto err;
|
|
|
|
pr2("Created type: INTEGER %d-bit %ssigned %s\n",
|
|
size, sign ? "un" : "", hex ? "hex" : "");
|
|
return type;
|
|
|
|
err:
|
|
bt_ctf_field_type_put(type);
|
|
return NULL;
|
|
}
|
|
|
|
static void ctf_writer__cleanup_data(struct ctf_writer *cw)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(cw->data.array); i++)
|
|
bt_ctf_field_type_put(cw->data.array[i]);
|
|
}
|
|
|
|
static int ctf_writer__init_data(struct ctf_writer *cw)
|
|
{
|
|
#define CREATE_INT_TYPE(type, size, sign, hex) \
|
|
do { \
|
|
(type) = create_int_type(size, sign, hex); \
|
|
if (!(type)) \
|
|
goto err; \
|
|
} while (0)
|
|
|
|
CREATE_INT_TYPE(cw->data.s64, 64, true, false);
|
|
CREATE_INT_TYPE(cw->data.u64, 64, false, false);
|
|
CREATE_INT_TYPE(cw->data.s32, 32, true, false);
|
|
CREATE_INT_TYPE(cw->data.u32, 32, false, false);
|
|
CREATE_INT_TYPE(cw->data.u64_hex, 64, false, true);
|
|
|
|
cw->data.string = bt_ctf_field_type_string_create();
|
|
if (cw->data.string)
|
|
return 0;
|
|
|
|
err:
|
|
ctf_writer__cleanup_data(cw);
|
|
pr_err("Failed to create data types.\n");
|
|
return -1;
|
|
}
|
|
|
|
static void ctf_writer__cleanup(struct ctf_writer *cw)
|
|
{
|
|
ctf_writer__cleanup_data(cw);
|
|
|
|
bt_ctf_clock_put(cw->clock);
|
|
free_streams(cw);
|
|
bt_ctf_stream_class_put(cw->stream_class);
|
|
bt_ctf_writer_put(cw->writer);
|
|
|
|
/* and NULL all the pointers */
|
|
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_clock *clock;
|
|
struct bt_ctf_field_type *pkt_ctx_type;
|
|
int ret;
|
|
|
|
/* 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;
|
|
|
|
/* Add cpu_id for packet context */
|
|
pkt_ctx_type = bt_ctf_stream_class_get_packet_context_type(stream_class);
|
|
if (!pkt_ctx_type)
|
|
goto err_cleanup;
|
|
|
|
ret = bt_ctf_field_type_structure_add_field(pkt_ctx_type, cw->data.u32, "cpu_id");
|
|
bt_ctf_field_type_put(pkt_ctx_type);
|
|
if (ret)
|
|
goto err_cleanup;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
static int ctf_writer__flush_streams(struct ctf_writer *cw)
|
|
{
|
|
int cpu, ret = 0;
|
|
|
|
for (cpu = 0; cpu < cw->stream_cnt && !ret; cpu++)
|
|
ret = ctf_stream__flush(cw->stream[cpu]);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int convert__config(const char *var, const char *value, void *cb)
|
|
{
|
|
struct convert *c = cb;
|
|
|
|
if (!strcmp(var, "convert.queue-size")) {
|
|
c->queue_size = perf_config_u64(var, value);
|
|
return 0;
|
|
}
|
|
|
|
return perf_default_config(var, value, cb);
|
|
}
|
|
|
|
int bt_convert__perf2ctf(const char *input, const char *path, bool force)
|
|
{
|
|
struct perf_session *session;
|
|
struct perf_data_file file = {
|
|
.path = input,
|
|
.mode = PERF_DATA_MODE_READ,
|
|
.force = force,
|
|
};
|
|
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;
|
|
|
|
perf_config(convert__config, &c);
|
|
|
|
/* CTF writer */
|
|
if (ctf_writer__init(cw, path))
|
|
return -1;
|
|
|
|
/* perf.data session */
|
|
session = perf_session__new(&file, 0, &c.tool);
|
|
if (!session)
|
|
goto free_writer;
|
|
|
|
if (c.queue_size) {
|
|
ordered_events__set_alloc_size(&session->ordered_events,
|
|
c.queue_size);
|
|
}
|
|
|
|
/* 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;
|
|
|
|
if (setup_streams(cw, session))
|
|
goto free_session;
|
|
|
|
err = perf_session__process_events(session);
|
|
if (!err)
|
|
err = ctf_writer__flush_streams(cw);
|
|
else
|
|
pr_err("Error during conversion.\n");
|
|
|
|
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);
|
|
|
|
perf_session__delete(session);
|
|
ctf_writer__cleanup(cw);
|
|
|
|
return err;
|
|
|
|
free_session:
|
|
perf_session__delete(session);
|
|
free_writer:
|
|
ctf_writer__cleanup(cw);
|
|
pr_err("Error during conversion setup.\n");
|
|
return err;
|
|
}
|