perf script: Add support for dumping symbols
Add option to dump symbols found in events.
e.g., perf script -f comm,pid,tid,time,trace,sym
swapper 0/0 537.037184: prev_comm=swapper prev_pid=0 prev_prio=120...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff8100134a cpu_idle ([kernel.kallsyms])
ffffffff81370b39 rest_init ([kernel.kallsyms])
ffffffff81696c23 start_kernel ([kernel.kallsyms].init.text)
ffffffff816962af x86_64_start_reservations ([kernel.kallsyms].init.text)
ffffffff816963b9 x86_64_start_kernel ([kernel.kallsyms].init.text)
sshd 1675/1675 537.037309: prev_comm=sshd prev_pid=1675 prev_prio=120...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff813837aa schedule_hrtimeout_range_clock ([kernel.kallsyms])
ffffffff81383886 schedule_hrtimeout_range ([kernel.kallsyms])
ffffffff8110c4f9 poll_schedule_timeout ([kernel.kallsyms])
ffffffff8110cd20 do_select ([kernel.kallsyms])
ffffffff8110ced8 core_sys_select ([kernel.kallsyms])
ffffffff8110d00d sys_select ([kernel.kallsyms])
ffffffff81002bc2 system_call ([kernel.kallsyms])
7f1647e56e93 __GI_select (/lib64/libc-2.12.90.so)
netstat 1692/1692 537.038664: prev_comm=netstat prev_pid=1692 prev_prio=...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff81002c3a sysret_careful ([kernel.kallsyms])
7f7a6cd1b210 __GI___libc_read (/lib64/libc-2.12.90.so)
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <1299734608-5223-6-git-send-email-daahern@cisco.com>
Signed-off-by: David Ahern <daahern@cisco.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index f26639f..c68cf40 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1134,3 +1134,64 @@
return ret;
}
+
+void perf_session__print_symbols(union perf_event *event,
+ struct perf_sample *sample,
+ struct perf_session *session)
+{
+ struct addr_location al;
+ const char *symname, *dsoname;
+ struct callchain_cursor *cursor = &session->callchain_cursor;
+ struct callchain_cursor_node *node;
+
+ if (perf_event__preprocess_sample(event, session, &al, sample,
+ NULL) < 0) {
+ error("problem processing %d event, skipping it.\n",
+ event->header.type);
+ return;
+ }
+
+ if (symbol_conf.use_callchain && sample->callchain) {
+
+ if (perf_session__resolve_callchain(session, al.thread,
+ sample->callchain, NULL) != 0) {
+ if (verbose)
+ error("Failed to resolve callchain. Skipping\n");
+ return;
+ }
+ callchain_cursor_commit(cursor);
+
+ while (1) {
+ node = callchain_cursor_current(cursor);
+ if (!node)
+ break;
+
+ if (node->sym && node->sym->name)
+ symname = node->sym->name;
+ else
+ symname = "";
+
+ if (node->map && node->map->dso && node->map->dso->name)
+ dsoname = node->map->dso->name;
+ else
+ dsoname = "";
+
+ printf("\t%16" PRIx64 " %s (%s)\n", node->ip, symname, dsoname);
+
+ callchain_cursor_advance(cursor);
+ }
+
+ } else {
+ if (al.sym && al.sym->name)
+ symname = al.sym->name;
+ else
+ symname = "";
+
+ if (al.map && al.map->dso && al.map->dso->name)
+ dsoname = al.map->dso->name;
+ else
+ dsoname = "";
+
+ printf("%16" PRIx64 " %s (%s)", al.addr, symname, dsoname);
+ }
+}