Commit 88d3d9b7 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo Committed by Ingo Molnar
Browse files

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: default avatarArnaldo 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: default avatarIngo Molnar <mingo@elte.hu>
parent 59ee68ec
......@@ -16,6 +16,7 @@
static char const *input_name = "perf.data";
static int force;
static bool with_hits;
static const char * const buildid_list_usage[] = {
"perf buildid-list [<options>]",
......@@ -23,6 +24,7 @@ static const char * const buildid_list_usage[] = {
};
static const struct option options[] = {
OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
......@@ -31,6 +33,34 @@ static const struct option options[] = {
OPT_END()
};
static int build_id_list__process_event(event_t *event,
struct perf_session *session)
{
struct addr_location al;
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
struct thread *thread = perf_session__findnew(session, event->ip.pid);
if (thread == NULL) {
pr_err("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
event->ip.ip, &al);
if (al.map != NULL)
al.map->dso->hit = 1;
return 0;
}
static struct perf_event_ops build_id_list__event_ops = {
.sample = build_id_list__process_event,
.mmap = event__process_mmap,
.fork = event__process_task,
};
static int __cmd_buildid_list(void)
{
int err = -1;
......@@ -40,7 +70,10 @@ static int __cmd_buildid_list(void)
if (session == NULL)
return -1;
dsos__fprintf_buildid(stdout);
if (with_hits)
perf_session__process_events(session, &build_id_list__event_ops);
dsos__fprintf_buildid(stdout, with_hits);
perf_session__delete(session);
return err;
......
......@@ -1716,22 +1716,25 @@ void dsos__fprintf(FILE *fp)
__dsos__fprintf(&dsos__user, fp);
}
static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp)
static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,
bool with_hits)
{
struct dso *pos;
size_t ret = 0;
list_for_each_entry(pos, head, node) {
if (with_hits && !pos->hit)
continue;
ret += dso__fprintf_buildid(pos, fp);
ret += fprintf(fp, " %s\n", pos->long_name);
}
return ret;
}
size_t dsos__fprintf_buildid(FILE *fp)
size_t dsos__fprintf_buildid(FILE *fp, bool with_hits)
{
return (__dsos__fprintf_buildid(&dsos__kernel, fp) +
__dsos__fprintf_buildid(&dsos__user, fp));
return (__dsos__fprintf_buildid(&dsos__kernel, fp, with_hits) +
__dsos__fprintf_buildid(&dsos__user, fp, with_hits));
}
static struct dso *dsos__create_kernel(const char *vmlinux)
......
......@@ -97,6 +97,7 @@ struct dso {
u8 slen_calculated:1;
u8 has_build_id:1;
u8 kernel:1;
u8 hit:1;
unsigned char origin;
u8 sorted_by_name;
u8 loaded;
......@@ -129,7 +130,7 @@ struct perf_session;
int dso__load(struct dso *self, struct map *map, struct perf_session *session,
symbol_filter_t filter);
void dsos__fprintf(FILE *fp);
size_t dsos__fprintf_buildid(FILE *fp);
size_t dsos__fprintf_buildid(FILE *fp, bool with_hits);
size_t dso__fprintf_buildid(struct dso *self, FILE *fp);
size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp);
......
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