linux-kernel - [PATCH 03/16] perf symbol: only un-prelink non-zero symbols

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Message-Id: <1344550721-21024-4-git-send-email-cody@linux.vnet.ibm.com>
Date:	Thu,  9 Aug 2012 15:18:28 -0700
From:	Cody P Schafer <cody@...ux.vnet.ibm.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Matt Hellsley <matthltc@...ibm.com>,
	David Hansen <dave@...ux.vnet.ibm.com>
Subject: [PATCH 03/16] perf symbol: only un-prelink non-zero symbols

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>
---
 tools/perf/util/symbol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b2f7597..254d4d8 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1401,7 +1401,7 @@ static int dso__load_sym(struct dso *dso, struct map *map, const char *name,
 			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,
-- 
1.7.11.3

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