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-rw-r--r--tools/perf/Makefile10
-rw-r--r--tools/perf/util/util.c4
2 files changed, 7 insertions, 7 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 5216ade909d0..f9126f89efef 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -45,6 +45,8 @@ include config/utilities.mak
45# 45#
46# Define NO_LIBUNWIND if you do not want libunwind dependency for dwarf 46# Define NO_LIBUNWIND if you do not want libunwind dependency for dwarf
47# backtrace post unwind. 47# backtrace post unwind.
48#
49# Define NO_BACKTRACE if you do not want stack backtrace debug feature
48 50
49$(OUTPUT)PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE 51$(OUTPUT)PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE
50 @$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT) 52 @$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT)
@@ -749,11 +751,9 @@ ifndef NO_STRLCPY
749 endif 751 endif
750endif 752endif
751 753
752ifdef NO_BACKTRACE 754ifndef NO_BACKTRACE
753 BASIC_CFLAGS += -DNO_BACKTRACE 755 ifeq ($(call try-cc,$(SOURCE_BACKTRACE),),y)
754else 756 BASIC_CFLAGS += -DBACKTRACE_SUPPORT
755 ifneq ($(call try-cc,$(SOURCE_BACKTRACE),),y)
756 BASIC_CFLAGS += -DNO_BACKTRACE
757 endif 757 endif
758endif 758endif
759 759
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 2055cf38041c..99664598bc1a 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -1,7 +1,7 @@
1#include "../perf.h" 1#include "../perf.h"
2#include "util.h" 2#include "util.h"
3#include <sys/mman.h> 3#include <sys/mman.h>
4#ifndef NO_BACKTRACE 4#ifdef BACKTRACE_SUPPORT
5#include <execinfo.h> 5#include <execinfo.h>
6#endif 6#endif
7#include <stdio.h> 7#include <stdio.h>
@@ -165,7 +165,7 @@ size_t hex_width(u64 v)
165} 165}
166 166
167/* Obtain a backtrace and print it to stdout. */ 167/* Obtain a backtrace and print it to stdout. */
168#ifndef NO_BACKTRACE 168#ifdef BACKTRACE_SUPPORT
169void dump_stack(void) 169void dump_stack(void)
170{ 170{
171 void *array[16]; 171 void *array[16];