perf diff: Display empty space for non paired samples

Currently in 'Baseline' and 'Period Base' columns zero values are
displayed in case no pair is found for the sample. This might be
confusing, using empty space instead.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
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/1349448287-18919-9-git-send-email-jolsa@redhat.com
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 305eb79f4af4153728524ae1b898c98b5f35b1c3..4f5f4756faacdb6e5d1638d4b876655b2116823f 100644 (file)
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -179,7 +179,10 @@ static int hpp__color_baseline(struct perf_hpp *hpp, struct hist_entry *he)
 {
        double percent = baseline_percent(he);
 
-       return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", percent);
+       if (he->pair)
+               return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", percent);
+       else
+               return scnprintf(hpp->buf, hpp->size, "        ");
 }
 
 static int hpp__entry_baseline(struct perf_hpp *hpp, struct hist_entry *he)
@@ -187,7 +190,10 @@ static int hpp__entry_baseline(struct perf_hpp *hpp, struct hist_entry *he)
        double percent = baseline_percent(he);
        const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%%";
 
-       return scnprintf(hpp->buf, hpp->size, fmt, percent);
+       if (he->pair || symbol_conf.field_sep)
+               return scnprintf(hpp->buf, hpp->size, fmt, percent);
+       else
+               return scnprintf(hpp->buf, hpp->size, "            ");
 }
 
 static int hpp__header_samples(struct perf_hpp *hpp)