提交 c45c86eb 编写于 作者: W Wang Nan 提交者: Arnaldo Carvalho de Melo

perf record: Extract synthesize code to record__synthesize()

Create record__synthesize(). It can be used to create tracking events
for each perf.data after perf supporting splitting into multiple
outputs.
Signed-off-by: NHe Kuang <hekuang@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456479154-136027-20-git-send-email-wangnan0@huawei.comSigned-off-by: NWang Nan <wangnan0@huawei.com>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
上级 d8871ea7
......@@ -486,6 +486,74 @@ static void workload_exec_failed_signal(int signo __maybe_unused,
static void snapshot_sig_handler(int sig);
static int record__synthesize(struct record *rec)
{
struct perf_session *session = rec->session;
struct machine *machine = &session->machines.host;
struct perf_data_file *file = &rec->file;
struct record_opts *opts = &rec->opts;
struct perf_tool *tool = &rec->tool;
int fd = perf_data_file__fd(file);
int err = 0;
if (file->is_pipe) {
err = perf_event__synthesize_attrs(tool, session,
process_synthesized_event);
if (err < 0) {
pr_err("Couldn't synthesize attrs.\n");
goto out;
}
if (have_tracepoints(&rec->evlist->entries)) {
/*
* FIXME err <= 0 here actually means that
* there were no tracepoints so its not really
* an error, just that we don't need to
* synthesize anything. We really have to
* return this more properly and also
* propagate errors that now are calling die()
*/
err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist,
process_synthesized_event);
if (err <= 0) {
pr_err("Couldn't record tracing data.\n");
goto out;
}
rec->bytes_written += err;
}
}
if (rec->opts.full_auxtrace) {
err = perf_event__synthesize_auxtrace_info(rec->itr, tool,
session, process_synthesized_event);
if (err)
goto out;
}
err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
machine);
WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n"
"Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
"Check /proc/kallsyms permission or run as root.\n");
err = perf_event__synthesize_modules(tool, process_synthesized_event,
machine);
WARN_ONCE(err < 0, "Couldn't record kernel module information.\n"
"Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
"Check /proc/modules permission or run as root.\n");
if (perf_guest) {
machines__process_guests(&session->machines,
perf_event__synthesize_guest_os, tool);
}
err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads,
process_synthesized_event, opts->sample_address,
opts->proc_map_timeout);
out:
return err;
}
static int __cmd_record(struct record *rec, int argc, const char **argv)
{
int err;
......@@ -580,61 +648,8 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
machine = &session->machines.host;
if (file->is_pipe) {
err = perf_event__synthesize_attrs(tool, session,
process_synthesized_event);
if (err < 0) {
pr_err("Couldn't synthesize attrs.\n");
goto out_child;
}
if (have_tracepoints(&rec->evlist->entries)) {
/*
* FIXME err <= 0 here actually means that
* there were no tracepoints so its not really
* an error, just that we don't need to
* synthesize anything. We really have to
* return this more properly and also
* propagate errors that now are calling die()
*/
err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist,
process_synthesized_event);
if (err <= 0) {
pr_err("Couldn't record tracing data.\n");
goto out_child;
}
rec->bytes_written += err;
}
}
if (rec->opts.full_auxtrace) {
err = perf_event__synthesize_auxtrace_info(rec->itr, tool,
session, process_synthesized_event);
if (err)
goto out_delete_session;
}
err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event,
machine);
WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n"
"Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
"Check /proc/kallsyms permission or run as root.\n");
err = perf_event__synthesize_modules(tool, process_synthesized_event,
machine);
WARN_ONCE(err < 0, "Couldn't record kernel module information.\n"
"Symbol resolution may be skewed if relocation was used (e.g. kexec).\n"
"Check /proc/modules permission or run as root.\n");
if (perf_guest) {
machines__process_guests(&session->machines,
perf_event__synthesize_guest_os, tool);
}
err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads,
process_synthesized_event, opts->sample_address,
opts->proc_map_timeout);
if (err != 0)
err = record__synthesize(rec);
if (err < 0)
goto out_child;
if (rec->realtime_prio) {
......
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