linux-kernel - [PATCH 02/19] perf annotate: Show invalid jump offset in error message

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Message-Id: <20161201180235.18392-3-acme@kernel.org>
Date:   Thu,  1 Dec 2016 15:02:18 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Wang Nan <wangnan0@...wei.com>
Subject: [PATCH 02/19] perf annotate: Show invalid jump offset in error message

From: Arnaldo Carvalho de Melo <acme@...hat.com>

To help in debugging when the wrong offset is being used, like in:

       │13d98: ↓ jne    13dd1 <lzma_lzma_preset@@XZ_5.0+0x28e1>

That is the full line from objdump, and it seems what should be used is
13dd1, not 28e1.

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/n/tip-4nc0marsgst1ft6inmvqber7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/ui/browsers/annotate.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index cee0eee31ce6..ec7a30fad149 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -543,14 +543,16 @@ struct disasm_line *annotate_browser__find_offset(struct annotate_browser *brows
 static bool annotate_browser__jump(struct annotate_browser *browser)
 {
 	struct disasm_line *dl = browser->selection;
+	u64 offset;
 	s64 idx;
 
 	if (!ins__is_jump(&dl->ins))
 		return false;
 
-	dl = annotate_browser__find_offset(browser, dl->ops.target.offset, &idx);
+	offset = dl->ops.target.offset;
+	dl = annotate_browser__find_offset(browser, offset, &idx);
 	if (dl == NULL) {
-		ui_helpline__puts("Invalid jump offset");
+		ui_helpline__printf("Invalid jump offset: %" PRIx64, offset);
 		return true;
 	}
 
-- 
2.9.3