linux-kernel - [PATCH 30/35] perf probe: Use hexadecimal type by default if possible

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Date:   Tue, 23 Aug 2016 18:03:31 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Hemant Kumar <hemant@...ux.vnet.ibm.com>,
        Naohiro Aota <naohiro.aota@...t.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Wang Nan <wangnan0@...wei.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 30/35] perf probe: Use hexadecimal type by default if possible

From: Masami Hiramatsu <mhiramat@...nel.org>

Use hexadecimal type by default if it is available on current running
kernel.

This keeps the default behavior of perf probe after changing the output
format of 'u8/16/32/64' to unsigned decimal number.

Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Hemant Kumar <hemant@...ux.vnet.ibm.com>
Cc: Naohiro Aota <naohiro.aota@...t.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/147151074685.12957.16415861010796255514.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/probe-finder.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index f18cd6bbada9..ac4740f8ee3a 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -373,7 +373,8 @@ static int convert_variable_type(Dwarf_Die *vr_die,
 		 probe_type_is_available(PROBE_TYPE_X))
 		prefix = 'x';
 	else
-		prefix = die_is_signed_type(&type) ? 's' : 'u';
+		prefix = die_is_signed_type(&type) ? 's' :
+			 probe_type_is_available(PROBE_TYPE_X) ? 'x' : 'u';
 
 	ret = dwarf_bytesize(&type);
 	if (ret <= 0)
-- 
2.7.4