Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 17/31] perf hists: Add helper functions for hierarchy mode | Date | Wed, 24 Feb 2016 22:58:12 -0300 |
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From: Namhyung Kim <namhyung@kernel.org>
The rb_hierarchy_{next,prev,last} functions are to traverse all hist entries in a hierarchy. They will be used by various function which supports hierarchy output.
As the rb_hierarchy_next() is used to traverse the whole hierarchy, it sometime needs to visit entries regardless of current folding state. So add enum hierarchy_move_dir and pass it to __rb_hierarchy_next() for those cases.
Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456326830-30456-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/util/hist.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/hist.h | 16 +++++++++++++++ 2 files changed, 72 insertions(+)
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 6ddac2fb29b5..358af7ed07af 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -1500,6 +1500,62 @@ void hists__output_resort(struct hists *hists, struct ui_progress *prog) output_resort(hists, prog, symbol_conf.use_callchain); } +static bool can_goto_child(struct hist_entry *he, enum hierarchy_move_dir hmd) +{ + if (he->leaf || hmd == HMD_FORCE_SIBLING) + return false; + + if (he->unfolded || hmd == HMD_FORCE_CHILD) + return true; + + return false; +} + +struct rb_node *rb_hierarchy_last(struct rb_node *node) +{ + struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node); + + while (can_goto_child(he, HMD_NORMAL)) { + node = rb_last(&he->hroot_out); + he = rb_entry(node, struct hist_entry, rb_node); + } + return node; +} + +struct rb_node *__rb_hierarchy_next(struct rb_node *node, enum hierarchy_move_dir hmd) +{ + struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node); + + if (can_goto_child(he, hmd)) + node = rb_first(&he->hroot_out); + else + node = rb_next(node); + + while (node == NULL) { + he = he->parent_he; + if (he == NULL) + break; + + node = rb_next(&he->rb_node); + } + return node; +} + +struct rb_node *rb_hierarchy_prev(struct rb_node *node) +{ + struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node); + + node = rb_prev(node); + if (node) + return rb_hierarchy_last(node); + + he = he->parent_he; + if (he == NULL) + return NULL; + + return &he->rb_node; +} + static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h, enum hist_filter filter) { diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 044419b3be7c..5690906c154c 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -418,4 +418,20 @@ int perf_hist_config(const char *var, const char *value); void perf_hpp_list__init(struct perf_hpp_list *list); +enum hierarchy_move_dir { + HMD_NORMAL, + HMD_FORCE_SIBLING, + HMD_FORCE_CHILD, +}; + +struct rb_node *rb_hierarchy_last(struct rb_node *node); +struct rb_node *__rb_hierarchy_next(struct rb_node *node, + enum hierarchy_move_dir hmd); +struct rb_node *rb_hierarchy_prev(struct rb_node *node); + +static inline struct rb_node *rb_hierarchy_next(struct rb_node *node) +{ + return __rb_hierarchy_next(node, HMD_NORMAL); +} + #endif /* __PERF_HIST_H */ -- 2.5.0
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