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-rw-r--r--tools/perf/util/hist.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 12f2d794dc28..561e9473a915 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1015,6 +1015,27 @@ void hist_entry__delete(struct hist_entry *he)
}
/*
+ * If this is not the last column, then we need to pad it according to the
+ * pre-calculated max lenght for this column, otherwise don't bother adding
+ * spaces because that would break viewing this with, for instance, 'less',
+ * that would show tons of trailing spaces when a long C++ demangled method
+ * names is sampled.
+*/
+int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
+ struct perf_hpp_fmt *fmt, int printed)
+{
+ if (!list_is_last(&fmt->list, &he->hists->hpp_list->fields)) {
+ const int width = fmt->width(fmt, hpp, hists_to_evsel(he->hists));
+ if (printed < width) {
+ advance_hpp(hpp, printed);
+ printed = scnprintf(hpp->buf, hpp->size, "%-*s", width - printed, " ");
+ }
+ }
+
+ return printed;
+}
+
+/*
* collapse the histogram
*/