From c0230b2bfbd16e42d937c34aed99e5d6493eb5e4 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 9 Mar 2011 22:23:27 -0700 Subject: 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 Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Thomas Gleixner LKML-Reference: <1299734608-5223-6-git-send-email-daahern@cisco.com> Signed-off-by: David Ahern Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) (limited to 'tools/perf/util/session.c') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index f26639fa0fb3..c68cf40764f9 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1134,3 +1134,64 @@ size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 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); + } +} -- cgit v1.2.3