Messages in this thread Patch in this message | | | Date | Tue, 27 Apr 2021 16:42:02 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH v5 5/5] perf-stat: introduce bpf_counter_ops->disable() |
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Em Tue, Apr 27, 2021 at 04:27:22PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Sun, Apr 25, 2021 at 02:43:33PM -0700, Song Liu escreveu: > > Introduce bpf_counter_ops->disable(), which is used stop counting the > > event. > > [acme@five perf]$ perf test -v python > Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc > 19: 'import perf' in python : > --- start --- > test child forked, pid 1497924 > python usage test: "echo "import sys ; sys.path.append('/tmp/build/perf/python'); import perf" | '/usr/bin/python3' " > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > ImportError: /tmp/build/perf/python/perf.cpython-39-x86_64-linux-gnu.so: undefined symbol: bpf_counter__disable > test child finished with -1 > ---- end ---- > 'import perf' in python: FAILED! > [acme@five perf]$ > > I'll fix this up in my local tree, if you need to respin, please pick > patches from tmp.perf/core, will refresh it later today.
Added this:
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 278abecb5bdfc0d2..27940edb161c2d8c 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -100,6 +100,11 @@ int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, int cpu __maybe_ return 0; } +int bpf_counter__disable(struct evsel *evsel __maybe_unused) +{ + return 0; +} + /* * Support debug printing even though util/debug.c is not linked. That means * implementing 'verbose' and 'eprintf'.
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