linux-kernel - [PATCH] perf trace: Fix summary

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Date:	Thu, 19 Mar 2015 12:23:03 -0600
From:	David Ahern <dsahern@...il.com>
To:	acme@...nel.org
Cc:	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>
Subject: [PATCH] perf trace: Fix summary_only option

The intent of the -s/--summary-only option is to just show a summary of the
system calls and statistics without any of the individual events. Commit
e596663ebb2 broke that by showing the interrupted lines:

perf trace -i perf.data -s
...
     0.741 ( 0.000 ms): sleep/31316 fstat(fd: 4, statbuf: 0x7ffc75ceb830                                  ) ...
     0.744 ( 0.000 ms): sleep/31316 mmap(len: 100244, prot: READ, flags: PRIVATE, fd: 4                   ) ...
     0.747 ( 0.000 ms): perf/31315 write(fd: 3, buf: 0x7d4bb0, count: 8                                  ) ...
...

Fix by checking for the summary only option.

Signed-off-by: David Ahern <dsahern@...il.com>
---
 tools/perf/builtin-trace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 6969ba98ff2f..dcd950ef2fd7 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1724,7 +1724,8 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
 			return -1;
 	}
 
-	printed += trace__printf_interrupted_entry(trace, sample);
+	if (!trace->summary_only)
+		printed += trace__printf_interrupted_entry(trace, sample);
 
 	ttrace->entry_time = sample->time;
 	msg = ttrace->entry_str;
-- 
2.2.1

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