perf tools: Convert to LIBAUDIT_SUPPORT

For building perf without libaudit, we can set NO_LIBAUDIT=1 as a
argument of make.  It then defines NO_LIBAUDIT_SUPPORT 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.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1348824728-14025-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 3 insertions, 5 deletions

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 676302441e14..99b2bb371bcd 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -543,14 +543,12 @@ ifndef NO_LIBUNWIND
         LIB_OBJS += $(OUTPUT)util/unwind.o
 endif
 
-ifdef NO_LIBAUDIT
-        BASIC_CFLAGS += -DNO_LIBAUDIT_SUPPORT
-else
+ifndef NO_LIBAUDIT
         FLAGS_LIBAUDIT = $(ALL_CFLAGS) $(ALL_LDFLAGS) -laudit
         ifneq ($(call try-cc,$(SOURCE_LIBAUDIT),$(FLAGS_LIBAUDIT)),y)
                 msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
-                BASIC_CFLAGS += -DNO_LIBAUDIT_SUPPORT
         else
+                BASIC_CFLAGS += -DLIBAUDIT_SUPPORT
                 BUILTIN_OBJS += $(OUTPUT)builtin-trace.o
                 EXTLIBS += -laudit
         endif
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index dacae4b8bcb4..6d50eb0b4251 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -55,7 +55,7 @@ static struct cmd_struct commands[] = {
         { "lock",       cmd_lock,       0 },
         { "kvm",        cmd_kvm,        0 },
         { "test",       cmd_test,       0 },
-#ifndef NO_LIBAUDIT_SUPPORT
+#ifdef LIBAUDIT_SUPPORT
         { "trace",      cmd_trace,      0 },
 #endif
         { "inject",     cmd_inject,     0 },