Em Tue, Feb 21, 2017 at 07:31:52PM +0530, Hari Bathini escreveu:
> +++ b/tools/perf/util/event.c
> @@ -1104,6 +1104,33 @@ size_t perf_event__fprintf_comm(union perf_event
> *event, FILE *fp)
> return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm,
> event->comm.pid, event->comm.tid);
> }
>
> +size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
> +{
> + size_t ret = 0;
> + struct perf_ns_link_info *ns_link_info;
> + u32 nr_namespaces, idx;
> +
> + ns_link_info = event->namespaces.link_info;
> + nr_namespaces = event->namespaces.nr_namespaces;
Perfect, no magic numbers here. :-)
- Arnaldo
> + ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t[",
> + event->namespaces.pid,
> + event->namespaces.tid,
> + nr_namespaces);
> +
> + for (idx = 0; idx < nr_namespaces; idx++) {
> + if (idx && (idx % 4 == 0))
> + ret += fprintf(fp, "\n\t ");
> +
> + ret += fprintf(fp, "%u/%s: %lu/0x%lx%s", idx,
> + perf_ns__name(idx), (u64)ns_link_info[idx].dev,
> + (u64)ns_link_info[idx].ino,
> + ((idx + 1) != nr_namespaces) ? ", " : "]\n\n");
> + }
> +
> + return ret;
> +}
> +
> int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
> union perf_event *event,
> struct perf_sample *sample,
> @@ -1300,6 +1327,9 @@ size_t perf_event__fprintf(union perf_event *event,
> FILE *fp)
> case PERF_RECORD_MMAP:
> ret += perf_event__fprintf_mmap(event, fp);
> break;
> + case PERF_RECORD_NAMESPACES:
> + ret += perf_event__fprintf_namespaces(event, fp);
> + break;
> case PERF_RECORD_MMAP2:
> ret += perf_event__fprintf_mmap2(event, fp);
> break;
> diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
> index c73ad47..8eb470b 100644
> --- a/tools/perf/util/event.h
> +++ b/tools/perf/util/event.h
> @@ -673,6 +673,7 @@ size_t perf_event__fprintf_itrace_start(union perf_event
> *event, FILE *fp);
> size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp);
> size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp);
> size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp);
> +size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp);
> size_t perf_event__fprintf(union perf_event *event, FILE *fp);
>
> u64 kallsyms__get_function_start(const char *kallsyms_filename,
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index 060fabb..5f46ad0 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -519,6 +519,9 @@ int machine__process_namespaces_event(struct machine
> *machine __maybe_unused,
> "\nWARNING: perf tool seems to support more namespaces than"
> " the kernel.\nTry updating the kernel..\n\n");
>
> + if (dump_trace)
> + perf_event__fprintf_namespaces(event, stdout);
> +
> if (thread == NULL ||
> thread__set_namespaces(thread, sample->time, &event->namespaces)) {
> dump_printf("problem processing PERF_RECORD_NAMESPACES,
> skipping event.\n");
