From 99cf666c5c0cd4f4c3e4155e7b01cf593d71d60e Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 5 Sep 2013 15:39:12 -0300 Subject: [PATCH] perf hists: Fix formatting of long symbol names We had a hardcoded buffer for formatting histogram entries, truncating long symbol names (C++ anyone?). Fix it by using hists__sort_list_width() before formatting the first histogram entry to calculate the max lenght needed by traversing the overheads and columns lists (sort order). Reported-by: Stephane Eranian Tested-by: Stephane Eranian Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-vdfkkyfdp8rboh7j9344o3ss@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/stdio/hist.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c index 5b4fb330f656..194e2f42ff5d 100644 --- a/tools/perf/ui/stdio/hist.c +++ b/tools/perf/ui/stdio/hist.c @@ -350,9 +350,9 @@ static int hist_entry__period_snprintf(struct perf_hpp *hpp, } static int hist_entry__fprintf(struct hist_entry *he, size_t size, - struct hists *hists, FILE *fp) + struct hists *hists, + char *bf, size_t bfsz, FILE *fp) { - char bf[512]; int ret; struct perf_hpp hpp = { .buf = bf, @@ -360,8 +360,8 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size, }; bool color = !symbol_conf.field_sep; - if (size == 0 || size > sizeof(bf)) - size = hpp.size = sizeof(bf); + if (size == 0 || size > bfsz) + size = hpp.size = bfsz; ret = hist_entry__period_snprintf(&hpp, he, color); hist_entry__sort_snprintf(he, bf + ret, size - ret, hists); @@ -392,6 +392,8 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows, .ptr = hists_to_evsel(hists), }; bool first = true; + size_t linesz; + char *line = NULL; init_rem_hits(); @@ -479,6 +481,13 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows, goto out; print_entries: + linesz = hists__sort_list_width(hists) + 3 + 1; + line = malloc(linesz); + if (line == NULL) { + ret = -1; + goto out; + } + for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); float percent = h->stat.period * 100.0 / @@ -490,10 +499,10 @@ print_entries: if (percent < min_pcnt) continue; - ret += hist_entry__fprintf(h, max_cols, hists, fp); + ret += hist_entry__fprintf(h, max_cols, hists, line, linesz, fp); if (max_rows && ++nr_rows >= max_rows) - goto out; + break; if (h->ms.map == NULL && verbose > 1) { __map_groups__fprintf_maps(&h->thread->mg, @@ -501,6 +510,8 @@ print_entries: fprintf(fp, "%.10s end\n", graph_dotted_line); } } + + free(line); out: free(rem_sq_bracket);