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On stdio, there's a problem that it shows invalid values for callchains in cumulated hist entries. It's because it only cares about the self period. But with --children behavior, we always add callchain info to the cumulated entries so it should use the value in that case. Before: # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ................ # 61.22% 0.32% swapper [kernel.kallsyms] [k] cpu_idle | --- cpu_idle | |--16530.76%-- start_secondary | |--2758.70%-- rest_init | start_kernel | x86_64_start_reservations | x86_64_start_kernel --6837850969203030.00%-- [...] After: # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ................ # 61.22% 0.32% swapper [kernel.kallsyms] [k] cpu_idle | --- cpu_idle | |--85.70%-- start_secondary | --14.30%-- rest_init start_kernel x86_64_start_reservations x86_64_start_kernel Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Arun Sharma <asharma@fb.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1401335910-16832-24-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> |
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hist.c |