From: Cody P Schafer <cody@linux.vnet.ibm.com>
Date: Fri, 10 Aug 2012 22:22:49 +0000 (-0700)
Subject: perf symbols: Only un-prelink non-zero symbols
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8db24c70ab43a4dd38c39b0b0cb4d4874257de55;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

perf symbols: 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@linux.vnet.ibm.com>
Cc: David Hansen <dave@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Matt Hellsley <matthltc@us.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sukadev Bhattiprolu <sukadev@linux.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@redhat.com>
---

diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 9ca89f8f6c97..e0376094fa8b 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,