diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-04-24 12:24:51 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-05-05 16:35:29 -0300 |
| commit | b38d85ef49cf6af9d1deaaf01daf0986d47e6c7a (patch) | |
| tree | 191921050dec780e42492758daedd099c30d9af5 /tools/perf/builtin-top.c | |
| parent | ca6c9c8b107f9788662117587cd24bbb19cea94d (diff) | |
| download | linux-b38d85ef49cf6af9d1deaaf01daf0986d47e6c7a.tar.bz2 | |
perf bpf: Decouple creating the evlist from adding the SB event
Renaming bpf_event__add_sb_event() to evlist__add_sb_event() and
requiring that the evlist be allocated beforehand.
This will allow using the same side band thread and evlist to be used
for multiple purposes in addition to react to PERF_RECORD_BPF_EVENT soon
after they are generated.
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Link: http://lore.kernel.org/lkml/20200429131106.27974-4-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 70e1c732db6a..de24aced7213 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1742,8 +1742,19 @@ int cmd_top(int argc, const char **argv) goto out_delete_evlist; } - if (!top.record_opts.no_bpf_event) - bpf_event__add_sb_event(&top.sb_evlist, &perf_env); + if (!top.record_opts.no_bpf_event) { + top.sb_evlist = evlist__new(); + + if (top.sb_evlist == NULL) { + pr_err("Couldn't create side band evlist.\n."); + goto out_delete_evlist; + } + + if (evlist__add_bpf_sb_event(top.sb_evlist, &perf_env)) { + pr_err("Couldn't ask for PERF_RECORD_BPF_EVENT side band events.\n."); + goto out_delete_evlist; + } + } if (perf_evlist__start_sb_thread(top.sb_evlist, target)) { pr_debug("Couldn't start the BPF side band thread:\nBPF programs starting from now on won't be annotatable\n"); |