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Date: Fri, 5 Oct 2012 01:55:26 -0700 From: tip-bot for Namhyung Kim <namhyung.kim@....com> To: linux-tip-commits@...r.kernel.org Cc: acme@...hat.com, linux-kernel@...r.kernel.org, paulus@...ba.org, hpa@...or.com, mingo@...nel.org, a.p.zijlstra@...llo.nl, namhyung.kim@....com, namhyung@...nel.org, irina.tirdea@...el.com, irina.tirdea@...il.com, tglx@...utronix.de Subject: [tip:perf/urgent] perf tools: Convert to BACKTRACE_SUPPORT Commit-ID: 4e34d9588b46f44a4dba718606913133f15e4b21 Gitweb: http://git.kernel.org/tip/4e34d9588b46f44a4dba718606913133f15e4b21 Author: Namhyung Kim <namhyung.kim@....com> AuthorDate: Tue, 2 Oct 2012 01:32:51 +0900 Committer: Arnaldo Carvalho de Melo <acme@...hat.com> CommitDate: Tue, 2 Oct 2012 18:36:45 -0300 perf tools: Convert to BACKTRACE_SUPPORT For building perf without stack backtrace debug, we can set NO_BACKTRACE=1 as a argument of make. It then defines NO_BACKTRACE macro for C code to do the proper handling. However it usually used in a negative semantics - e.g. #ifndef - so we saw double negations which can be misleading. Convert it to a positive form to make it more readable and add _SUPPORT suffix for consistency. Signed-off-by: Namhyung Kim <namhyung@...nel.org> Cc: Ingo Molnar <mingo@...nel.org> Cc: Irina Tirdea <irina.tirdea@...il.com> Cc: Irina Tirdea <irina.tirdea@...el.com> Cc: Paul Mackerras <paulus@...ba.org> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl> Link: http://lkml.kernel.org/r/1349109171-1942-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com> --- tools/perf/Makefile | 10 +++++----- tools/perf/util/util.c | 4 ++-- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 5216ade..f9126f8 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -45,6 +45,8 @@ include config/utilities.mak # # Define NO_LIBUNWIND if you do not want libunwind dependency for dwarf # backtrace post unwind. +# +# Define NO_BACKTRACE if you do not want stack backtrace debug feature $(OUTPUT)PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE @$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT) @@ -749,11 +751,9 @@ ifndef NO_STRLCPY endif endif -ifdef NO_BACKTRACE - BASIC_CFLAGS += -DNO_BACKTRACE -else - ifneq ($(call try-cc,$(SOURCE_BACKTRACE),),y) - BASIC_CFLAGS += -DNO_BACKTRACE +ifndef NO_BACKTRACE + ifeq ($(call try-cc,$(SOURCE_BACKTRACE),),y) + BASIC_CFLAGS += -DBACKTRACE_SUPPORT endif endif diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 2055cf3..9966459 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -1,7 +1,7 @@ #include "../perf.h" #include "util.h" #include <sys/mman.h> -#ifndef NO_BACKTRACE +#ifdef BACKTRACE_SUPPORT #include <execinfo.h> #endif #include <stdio.h> @@ -165,7 +165,7 @@ size_t hex_width(u64 v) } /* Obtain a backtrace and print it to stdout. */ -#ifndef NO_BACKTRACE +#ifdef BACKTRACE_SUPPORT void dump_stack(void) { void *array[16]; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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