perf hists browser: Add ui.show-headers config file option

Adding ui.show-headers config file option to define if the histogram
entries headers will start visible or not.

Currently columns headers are displayed by default, following
lines in ~/.perfconfig file will disable that:

  [ui]
        show-headers = false

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403886418-5556-4-git-send-email-jolsa@kernel.org
[ renamed symbol_conf.show_headers to .show_hist_headers ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

4 files changed, 17 insertions, 2 deletions

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 5fa2e181ef0c..a94b11fc5e00 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1284,7 +1284,7 @@ static struct hist_browser *hist_browser__new(struct hists *hists)
                 browser->b.refresh_dimensions = hist_browser__refresh_dimensions;
                 browser->b.seek = ui_browser__hists_seek;
                 browser->b.use_navkeypressed = true;
-                browser->show_headers = true;
+                browser->show_headers = symbol_conf.show_hist_headers;
         }
 
         return browser;
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 24519e14ac56..1e5e2e5af6b1 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -350,6 +350,16 @@ static int perf_default_core_config(const char *var __maybe_unused,
         return 0;
 }
 
+static int perf_ui_config(const char *var, const char *value)
+{
+        /* Add other config variables here. */
+        if (!strcmp(var, "ui.show-headers")) {
+                symbol_conf.show_hist_headers = perf_config_bool(var, value);
+                return 0;
+        }
+        return 0;
+}
+
 int perf_default_config(const char *var, const char *value,
                         void *dummy __maybe_unused)
 {
@@ -359,6 +369,9 @@ int perf_default_config(const char *var, const char *value,
         if (!prefixcmp(var, "hist."))
                 return perf_hist_config(var, value);
 
+        if (!prefixcmp(var, "ui."))
+                return perf_ui_config(var, value);
+
         /* Add other config variables here. */
         return 0;
 }
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 7b9096f29cdb..2e6a2e219eb9 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -34,6 +34,7 @@ struct symbol_conf symbol_conf = {
         .annotate_src           = true,
         .demangle               = true,
         .cumulate_callchain     = true,
+        .show_hist_headers      = true,
         .symfs                  = "",
 };
 
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 615c752dd767..a81877b1dee0 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -118,7 +118,8 @@ struct symbol_conf {
                         annotate_src,
                         event_group,
                         demangle,
-                        filter_relative;
+                        filter_relative,
+                        show_hist_headers;
         const char      *vmlinux_name,
                         *kallsyms_name,
                         *source_prefix,