linux-kernel - [PATCH 22/38] perf symbols: Only un-prelink non-zero symbols

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Message-Id: <1344883039-13495-23-git-send-email-acme@infradead.org>
Date:	Mon, 13 Aug 2012 15:37:03 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Cody P Schafer <cody@...ux.vnet.ibm.com>,
	David Hansen <dave@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	Matt Hellsley <matthltc@...ibm.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 22/38] perf symbols: Only un-prelink non-zero symbols

From: Cody P Schafer <cody@...ux.vnet.ibm.com>

Prelink only adjusts the addresses of non-zero symbols. Do the same when we
reverse the adjustments.

Signed-off-by: Cody P Schafer <cody@...ux.vnet.ibm.com>
Cc: David Hansen <dave@...ux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Matt Hellsley <matthltc@...ibm.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1344637382-22789-4-git-send-email-cody@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/symbol-elf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 9ca89f8..e037609 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -717,7 +717,7 @@ int dso__load_sym(struct dso *dso, struct map *map, const char *name, int fd,
 			goto new_symbol;
 		}
 
-		if (curr_dso->adjust_symbols) {
+		if (curr_dso->adjust_symbols && sym.st_value) {
 			pr_debug4("%s: adjusting symbol: st_value: %#" PRIx64 " "
 				  "sh_addr: %#" PRIx64 " sh_offset: %#" PRIx64 "\n", __func__,
 				  (u64)sym.st_value, (u64)shdr.sh_addr,
-- 
1.7.1

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