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perf evlist: Allow asking for max precise_ip in add_default()
There are cases where we want to leave attr.precise_ip as zero, such as when using 'perf record --no-samples', where this would make the kernel return -EINVAL. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-0u2m2a8rqw781r6m8svqyne8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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2 changed files with 10 additions and 3 deletions
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@ -242,9 +242,9 @@ void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr)
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}
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}
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int perf_evlist__add_default(struct perf_evlist *evlist)
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int __perf_evlist__add_default(struct perf_evlist *evlist, bool precise)
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{
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struct perf_evsel *evsel = perf_evsel__new_cycles(true);
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struct perf_evsel *evsel = perf_evsel__new_cycles(precise);
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if (evsel == NULL)
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return -ENOMEM;
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@ -115,7 +115,14 @@ void perf_evlist__delete(struct perf_evlist *evlist);
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void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
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void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel);
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int perf_evlist__add_default(struct perf_evlist *evlist);
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int __perf_evlist__add_default(struct perf_evlist *evlist, bool precise);
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static inline int perf_evlist__add_default(struct perf_evlist *evlist)
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{
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return __perf_evlist__add_default(evlist, true);
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}
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int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
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struct perf_event_attr *attrs, size_t nr_attrs);
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