[RFC PATCH] perf tui: Annotate entries in callchains

From: Arnaldo Carvalho de Melo
Date: Thu Mar 19 2015 - 18:59:12 EST

Hi Stephane,

This patch, together with what is in my perf/core branch, should
implement that feature we talked about recently, i.e. to allow
annotating entries in callchains, please take a look at see if you think
it is ok,

- Arnaldo

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Subject: [PATCH 1/1] perf hists browser: Indicate which callchain entries are annotated

Now that we can annotate entries in a callchain, show which ones have an
associated symbol and samples, by adding a right arrow just before the
symbol name when in verbose mode.

To toggle verbose mode press 'V'.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-d2rf1p3h5gdp7hdl2gf2bozl@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/ui/browsers/hists.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index cd7350aeb8e7..995b7a8596b1 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -511,6 +511,7 @@ static void hist_browser__show_callchain_entry(struct hist_browser *browser,
int color, width;
char folded_sign = callchain_list__folded(chain);
+ bool show_annotated = browser->show_dso && chain->ms.sym && symbol__annotation(chain->ms.sym)->src;

width = browser->b.width - (offset + 2);
@@ -523,7 +524,8 @@ static void hist_browser__show_callchain_entry(struct hist_browser *browser,
ui_browser__set_color(&browser->b, color);
hist_browser__gotorc(browser, row, 0);
slsmg_write_nstring(" ", offset);
- slsmg_printf("%c ", folded_sign);
+ slsmg_printf("%c", folded_sign);
+ ui_browser__write_graph(&browser->b, show_annotated ? SLSMG_RARROW_CHAR : ' ');
slsmg_write_nstring(str, width);


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