perf hists: Basic support of hierarchical report view
In the hierarchical view, entries will be grouped and sorted on the first key, and then on the second key, and so on. Add the he->hroot_{in,out} fields to keep the lower level entries. Actually this can share space, in a union, with callchain's 'sorted_root' since the hroots are only used by non-leaf entries and callchain is only used by leaf entries. It also adds the 'parent_he' and 'depth' fields which can be used by browsers. This patch only implements collapsing part which creates internal entries for each sort key. These need to be sorted by output_sort stage and to be displayed properly in the later patch(es). 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/1456326830-30456-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -396,6 +396,9 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template,
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}
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INIT_LIST_HEAD(&he->pairs.node);
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thread__get(he->thread);
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if (!symbol_conf.report_hierarchy)
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he->leaf = true;
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}
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return he;
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@ -1049,6 +1052,114 @@ int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
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* collapse the histogram
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*/
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static void hists__apply_filters(struct hists *hists, struct hist_entry *he);
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static struct hist_entry *hierarchy_insert_entry(struct hists *hists,
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struct rb_root *root,
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struct hist_entry *he,
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struct perf_hpp_fmt *fmt)
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{
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struct rb_node **p = &root->rb_node;
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struct rb_node *parent = NULL;
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struct hist_entry *iter, *new;
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int64_t cmp;
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while (*p != NULL) {
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parent = *p;
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iter = rb_entry(parent, struct hist_entry, rb_node_in);
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cmp = fmt->collapse(fmt, iter, he);
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if (!cmp) {
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he_stat__add_stat(&iter->stat, &he->stat);
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return iter;
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}
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if (cmp < 0)
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p = &parent->rb_left;
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else
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p = &parent->rb_right;
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}
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new = hist_entry__new(he, true);
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if (new == NULL)
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return NULL;
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hists__apply_filters(hists, new);
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hists->nr_entries++;
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/* save related format for output */
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new->fmt = fmt;
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/* some fields are now passed to 'new' */
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if (perf_hpp__is_trace_entry(fmt))
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he->trace_output = NULL;
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else
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new->trace_output = NULL;
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if (perf_hpp__is_srcline_entry(fmt))
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he->srcline = NULL;
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else
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new->srcline = NULL;
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if (perf_hpp__is_srcfile_entry(fmt))
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he->srcfile = NULL;
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else
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new->srcfile = NULL;
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rb_link_node(&new->rb_node_in, parent, p);
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rb_insert_color(&new->rb_node_in, root);
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return new;
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}
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static int hists__hierarchy_insert_entry(struct hists *hists,
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struct rb_root *root,
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struct hist_entry *he)
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{
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struct perf_hpp_fmt *fmt;
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struct hist_entry *new_he = NULL;
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struct hist_entry *parent = NULL;
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int depth = 0;
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int ret = 0;
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hists__for_each_sort_list(hists, fmt) {
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if (!perf_hpp__is_sort_entry(fmt) &&
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!perf_hpp__is_dynamic_entry(fmt))
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continue;
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if (perf_hpp__should_skip(fmt, hists))
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continue;
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/* insert copy of 'he' for each fmt into the hierarchy */
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new_he = hierarchy_insert_entry(hists, root, he, fmt);
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if (new_he == NULL) {
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ret = -1;
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break;
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}
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root = &new_he->hroot_in;
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new_he->parent_he = parent;
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new_he->depth = depth++;
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parent = new_he;
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}
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if (new_he) {
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new_he->leaf = true;
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if (symbol_conf.use_callchain) {
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callchain_cursor_reset(&callchain_cursor);
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if (callchain_merge(&callchain_cursor,
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new_he->callchain,
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he->callchain) < 0)
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ret = -1;
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}
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}
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/* 'he' is no longer used */
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hist_entry__delete(he);
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/* return 0 (or -1) since it already applied filters */
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return ret;
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}
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int hists__collapse_insert_entry(struct hists *hists, struct rb_root *root,
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struct hist_entry *he)
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{
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@ -1057,6 +1168,9 @@ int hists__collapse_insert_entry(struct hists *hists, struct rb_root *root,
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struct hist_entry *iter;
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int64_t cmp;
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if (symbol_conf.report_hierarchy)
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return hists__hierarchy_insert_entry(hists, root, he);
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while (*p != NULL) {
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parent = *p;
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iter = rb_entry(parent, struct hist_entry, rb_node_in);
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@ -96,9 +96,11 @@ struct hist_entry {
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s32 socket;
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s32 cpu;
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u8 cpumode;
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u8 depth;
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/* We are added by hists__add_dummy_entry. */
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bool dummy;
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bool leaf;
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char level;
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u8 filtered;
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@ -120,13 +122,22 @@ struct hist_entry {
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char *srcline;
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char *srcfile;
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struct symbol *parent;
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struct rb_root sorted_chain;
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struct branch_info *branch_info;
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struct hists *hists;
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struct mem_info *mem_info;
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void *raw_data;
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u32 raw_size;
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void *trace_output;
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struct perf_hpp_fmt *fmt;
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struct hist_entry *parent_he;
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union {
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/* this is for hierarchical entry structure */
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struct {
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struct rb_root hroot_in;
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struct rb_root hroot_out;
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}; /* non-leaf entries */
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struct rb_root sorted_chain; /* leaf entry has callchains */
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};
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struct callchain_root callchain[0]; /* must be last member */
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};
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@ -110,7 +110,8 @@ struct symbol_conf {
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has_filter,
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show_ref_callgraph,
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hide_unresolved,
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raw_trace;
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raw_trace,
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report_hierarchy;
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const char *vmlinux_name,
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*kallsyms_name,
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*source_prefix,
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