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perf top: Synthesize BPF events for pre-existing loaded BPF programs 

So that we can resolve symbols and map names.

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: Song Liu <songliubraving@fb.com>
Cc: kernel-team@fb.com
Cc: netdev@vger.kernel.org
Link: http://lkml.kernel.org/r/20190117161521.1341602-9-songliubraving@fb.com
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
hifive-unleashed-5.1
Arnaldo Carvalho de Melo 2019-01-17 08:15:20 -08:00
parent 7b612e291a
commit a40b95bcd3
1 changed files with 7 additions and 0 deletions
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7
tools/perf/builtin-top.c
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@ -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);