perf report: Fix indentation of dynamic entries in hierarchy
When dynamic entries are used in the hierarchy mode with multiple events, the output might not be aligned properly. In the hierarchy mode, the each sort column is indented using total number of sort keys. So it keeps track of number of sort keys when adding them. However a dynamic sort key can be added more than once when multiple events have same field names. This results in unnecessarily long indentation in the output. For example perf kmem records following events: $ perf evlist --trace-fields -i perf.data.kmem kmem:kmalloc: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags kmem:kmalloc_node: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags,node kmem:kfree: trace_fields: call_site,ptr kmem:kmem_cache_alloc: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags kmem:kmem_cache_alloc_node: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags,node kmem:kmem_cache_free: trace_fields: call_site,ptr kmem:mm_page_alloc: trace_fields: page,order,gfp_flags,migratetype kmem:mm_page_free: trace_fields: page,order As you can see, many field names shared between kmem events. So adding 'ptr' dynamic sort key alone will set nr_sort_keys to 6. And this adds many unnecessary spaces between columns. Before: $ perf report -i perf.data.kmem --hierarchy -s ptr -g none --stdio ... # Overhead ptr # ....................... ................................... # 99.89% 0xffff8803ffb79720 0.06% 0xffff8803d228a000 0.03% 0xffff8803f7678f00 0.00% 0xffff880401dc5280 0.00% 0xffff880406172380 0.00% 0xffff8803ffac3a00 0.00% 0xffff8803ffac1600 After: # Overhead ptr # ........ .................... # 99.89% 0xffff8803ffb79720 0.06% 0xffff8803d228a000 0.03% 0xffff8803f7678f00 0.00% 0xffff880401dc5280 0.00% 0xffff880406172380 0.00% 0xffff8803ffac3a00 0.00% 0xffff8803ffac1600 Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1456512767-1164-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -1547,7 +1547,7 @@ static int hists_browser__scnprintf_hierarchy_headers(struct hist_browser *brows
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struct perf_hpp_fmt *fmt;
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size_t ret = 0;
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int column = 0;
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int nr_sort_keys = hists->hpp_list->nr_sort_keys;
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int nr_sort_keys = hists->nr_sort_keys;
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bool first = true;
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ret = scnprintf(buf, size, " ");
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@ -1632,7 +1632,7 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser)
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u16 header_offset = 0;
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struct rb_node *nd;
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struct hist_browser *hb = container_of(browser, struct hist_browser, b);
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int nr_sort = hb->hists->hpp_list->nr_sort_keys;
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int nr_sort = hb->hists->nr_sort_keys;
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if (hb->show_headers) {
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hist_browser__show_headers(hb);
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@ -1969,7 +1969,7 @@ static int hist_browser__fprintf(struct hist_browser *browser, FILE *fp)
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struct rb_node *nd = hists__filter_entries(rb_first(browser->b.entries),
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browser->min_pcnt);
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int printed = 0;
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int nr_sort = browser->hists->hpp_list->nr_sort_keys;
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int nr_sort = browser->hists->nr_sort_keys;
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while (nd) {
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struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
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@ -495,7 +495,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
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size = hpp.size = bfsz;
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if (symbol_conf.report_hierarchy) {
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int nr_sort = hists->hpp_list->nr_sort_keys;
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int nr_sort = hists->nr_sort_keys;
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return hist_entry__hierarchy_fprintf(he, &hpp, nr_sort,
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hists, fp);
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@ -529,7 +529,7 @@ static int print_hierarchy_header(struct hists *hists, struct perf_hpp *hpp,
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unsigned header_width = 0;
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struct perf_hpp_fmt *fmt;
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nr_sort = hists->hpp_list->nr_sort_keys;
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nr_sort = hists->nr_sort_keys;
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/* preserve max indent depth for column headers */
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print_hierarchy_indent(sep, nr_sort, spaces, fp);
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@ -728,7 +728,7 @@ print_entries:
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* display "no entry >= x.xx%" message.
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*/
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if (!h->leaf && !hist_entry__has_hierarchy_children(h, min_pcnt)) {
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int nr_sort = hists->hpp_list->nr_sort_keys;
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int nr_sort = hists->nr_sort_keys;
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print_hierarchy_indent(sep, nr_sort + h->depth + 1, spaces, fp);
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fprintf(fp, "%*sno entry >= %.2f%%\n", indent, "", min_pcnt);
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@ -78,6 +78,7 @@ struct hists {
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u16 col_len[HISTC_NR_COLS];
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int socket_filter;
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struct perf_hpp_list *hpp_list;
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int nr_sort_keys;
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};
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struct hist_entry_iter;
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@ -2633,6 +2633,9 @@ out:
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int setup_sorting(struct perf_evlist *evlist)
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{
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int err;
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struct hists *hists;
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struct perf_evsel *evsel;
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struct perf_hpp_fmt *fmt;
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err = __setup_sorting(evlist);
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if (err < 0)
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@ -2644,6 +2647,22 @@ int setup_sorting(struct perf_evlist *evlist)
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return err;
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}
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evlist__for_each(evlist, evsel) {
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hists = evsel__hists(evsel);
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hists->nr_sort_keys = perf_hpp_list.nr_sort_keys;
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/*
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* If dynamic entries were used, it might add multiple
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* entries to each evsel for a single field name. Set
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* actual number of sort keys for each hists.
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*/
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perf_hpp_list__for_each_sort_list(&perf_hpp_list, fmt) {
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if (perf_hpp__is_dynamic_entry(fmt) &&
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!perf_hpp__defined_dynamic_entry(fmt, hists))
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hists->nr_sort_keys--;
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}
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}
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reset_dimensions();
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/*
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