During the processing of /proc during event synthesis new processes may start. Add a dummy event if /proc is to be processed, to capture mmaps for starting processes. This reuses the existing logic for initial-delay. v3 fixes the attr test of test-record-C0 v2 fixes the dummy event configuration and a branch stack issue. Suggested-by: Stephane Eranian <eranian@google.com> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200422173615.59436-1-irogers@google.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
23 lines
409 B
Plaintext
23 lines
409 B
Plaintext
[config]
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command = record
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args = --no-bpf-event -C 0 kill >/dev/null 2>&1
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ret = 1
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[event:base-record]
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cpu=0
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# no enable on exec for CPU attached
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enable_on_exec=0
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# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME |
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# PERF_SAMPLE_ID | PERF_SAMPLE_PERIOD
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# + PERF_SAMPLE_CPU added by -C 0
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sample_type=455
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# Dummy event handles mmaps, comm and task.
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mmap=0
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comm=0
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task=0
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[event:system-wide-dummy]
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