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[v10,perf,bpf-next,8/9] perf top: Synthesize BPF events for pre-existing loaded BPF programs

Message ID 20190116162931.1542429-9-songliubraving@fb.com
State Changes Requested
Delegated to: BPF Maintainers
Headers show
Series reveal invisible bpf programs | expand

Commit Message

Song Liu Jan. 16, 2019, 4:29 p.m. UTC 
From: Arnaldo Carvalho de Melo <acme@redhat.com>

So that we can resolve symbols and map names.

Cc: Song Liu <songliubraving@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@fb.com
Cc: netdev@vger.kernel.org
Link: https://lkml.kernel.org/n/tip-h3loibff6htedj43q7uinon0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
---
 tools/perf/builtin-top.c | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index f64e312db787..5a486d4de56e 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -22,6 +22,7 @@ 
 #include "perf.h"
 
 #include "util/annotate.h"
+#include "util/bpf-event.h"
 #include "util/config.h"
 #include "util/color.h"
 #include "util/drv_configs.h"
@@ -1215,6 +1216,12 @@  static int __cmd_top(struct perf_top *top)
 
 	init_process_thread(top);
 
+	ret = perf_event__synthesize_bpf_events(&top->tool, perf_event__process,
+						&top->session->machines.host,
+						&top->record_opts);
+	if (ret < 0)
+		pr_warning("Couldn't synthesize bpf events.\n");
+
 	machine__synthesize_threads(&top->session->machines.host, &opts->target,
 				    top->evlist->threads, false,
 				    top->nr_threads_synthesize);