Commit-ID: 4e34d9588b46f44a4dba718606913133f15e4b21 Gitweb: http://git.kernel.org/tip/4e34d9588b46f44a4dba718606913133f15e4b21 Author: Namhyung Kim <[email protected]> AuthorDate: Tue, 2 Oct 2012 01:32:51 +0900 Committer: Arnaldo Carvalho de Melo <[email protected]> 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 <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Irina Tirdea <[email protected]> Cc: Irina Tirdea <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- 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 [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
