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perf buildid-list: Introduce --with-hits option
Using this option 'perf buildid-list' will process all samples, marking the DSOs that had some hits to list just them. This in turn will be used by a new porcelain, 'perf archive', that will be just a shell script to create a tarball from the 'perf buildid-list --with-hits' output and the files cached by 'perf record' in ~/.debug. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263519930-22803-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -16,6 +16,7 @@
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static char const *input_name = "perf.data";
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static int force;
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static bool with_hits;
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static const char * const buildid_list_usage[] = {
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"perf buildid-list [<options>]",
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@ -23,6 +24,7 @@ static const char * const buildid_list_usage[] = {
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};
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static const struct option options[] = {
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OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
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OPT_STRING('i', "input", &input_name, "file",
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"input file name"),
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OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
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@ -31,6 +33,34 @@ static const struct option options[] = {
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OPT_END()
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};
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static int build_id_list__process_event(event_t *event,
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struct perf_session *session)
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{
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struct addr_location al;
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u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
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struct thread *thread = perf_session__findnew(session, event->ip.pid);
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if (thread == NULL) {
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pr_err("problem processing %d event, skipping it.\n",
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event->header.type);
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return -1;
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}
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thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
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event->ip.ip, &al);
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if (al.map != NULL)
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al.map->dso->hit = 1;
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return 0;
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}
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static struct perf_event_ops build_id_list__event_ops = {
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.sample = build_id_list__process_event,
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.mmap = event__process_mmap,
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.fork = event__process_task,
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};
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static int __cmd_buildid_list(void)
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{
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int err = -1;
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@ -40,7 +70,10 @@ static int __cmd_buildid_list(void)
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if (session == NULL)
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return -1;
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dsos__fprintf_buildid(stdout);
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if (with_hits)
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perf_session__process_events(session, &build_id_list__event_ops);
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dsos__fprintf_buildid(stdout, with_hits);
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perf_session__delete(session);
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return err;
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@ -1716,22 +1716,25 @@ void dsos__fprintf(FILE *fp)
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__dsos__fprintf(&dsos__user, fp);
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}
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static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp)
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static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,
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bool with_hits)
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{
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struct dso *pos;
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size_t ret = 0;
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list_for_each_entry(pos, head, node) {
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if (with_hits && !pos->hit)
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continue;
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ret += dso__fprintf_buildid(pos, fp);
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ret += fprintf(fp, " %s\n", pos->long_name);
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}
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return ret;
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}
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size_t dsos__fprintf_buildid(FILE *fp)
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size_t dsos__fprintf_buildid(FILE *fp, bool with_hits)
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{
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return (__dsos__fprintf_buildid(&dsos__kernel, fp) +
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__dsos__fprintf_buildid(&dsos__user, fp));
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return (__dsos__fprintf_buildid(&dsos__kernel, fp, with_hits) +
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__dsos__fprintf_buildid(&dsos__user, fp, with_hits));
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}
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static struct dso *dsos__create_kernel(const char *vmlinux)
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@ -97,6 +97,7 @@ struct dso {
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u8 slen_calculated:1;
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u8 has_build_id:1;
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u8 kernel:1;
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u8 hit:1;
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unsigned char origin;
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u8 sorted_by_name;
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u8 loaded;
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@ -129,7 +130,7 @@ struct perf_session;
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int dso__load(struct dso *self, struct map *map, struct perf_session *session,
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symbol_filter_t filter);
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void dsos__fprintf(FILE *fp);
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size_t dsos__fprintf_buildid(FILE *fp);
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size_t dsos__fprintf_buildid(FILE *fp, bool with_hits);
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size_t dso__fprintf_buildid(struct dso *self, FILE *fp);
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size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp);
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