perf hists: Use struct perf_hpp_fmt::idx in perf_hpp__reset_width

We are going to add dynamic hpp format fields, so we need to make the
'len' change for the format itself, not in the perf_hpp__format
template.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1453109064-1026-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index d392801..5a11bf0 100644 (file)
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -629,20 +629,12 @@ unsigned int hists__sort_list_width(struct hists *hists)
 
 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
 {
-       int idx;
-
        if (perf_hpp__is_sort_entry(fmt))
                return perf_hpp__reset_sort_width(fmt, hists);
 
-       for (idx = 0; idx < PERF_HPP__MAX_INDEX; idx++) {
-               if (fmt == &perf_hpp__format[idx])
-                       break;
-       }
-
-       if (idx == PERF_HPP__MAX_INDEX)
-               return;
+       BUG_ON(fmt->idx >= PERF_HPP__MAX_INDEX);
 
-       switch (idx) {
+       switch (fmt->idx) {
        case PERF_HPP__OVERHEAD:
        case PERF_HPP__OVERHEAD_SYS:
        case PERF_HPP__OVERHEAD_US: