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41477acf09
So that we can figure out the real size of the struct and also be able to tell if callchains may be present in this histogram entry. Since we can't always guarantee that from hist_entry->hists we can use hists_to_evsel, to then look at evsel->attr.sample_type for PERF_SAMPLE_CALLCHAIN, like with the 'perf c2c' tool, that uses plain 'struct hists' instances, we need another way of deciding if a specific hist_entry instance has callchains associated with it, i.e. if its hist_entry->callchain[0] has space allocated for. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-ptvndealxs1k7myluvu9flnq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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