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c9d3662870
There are places where we have only access to struct hists and need to know if any of its hist_entries has callchains, like when drawing headers for the various output modes (stdio, TUI, etc), so, when adding a new hist_entry, check if it has callchains, storing this info for later use by hists__has_callchains(). This reimplementation is necessary because not always a 'struct hists' is allocated together with a 'struct perf evsel', so we can't go from 'hists' to 'perf_event_attr.sample_type & PERF_SAMPLE_CALLCHAIN'. 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-hg5g7yddjio3ljwyqnnaj5dt@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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