From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755305AbZCVRBq (ORCPT ); Sun, 22 Mar 2009 13:01:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752430AbZCVRBg (ORCPT ); Sun, 22 Mar 2009 13:01:36 -0400 Received: from mail-bw0-f169.google.com ([209.85.218.169]:40580 "EHLO mail-bw0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751388AbZCVRBf (ORCPT ); Sun, 22 Mar 2009 13:01:35 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; b=QAxrL6h0T6JpebkBiKKSjEmTE8gVlldRGWxtDsQV39Xgwo4mEuARtJD2cEV+ax1aSL b2a+AU78YLkCJeRsAvpzaaxzrGcNwJc39J0fkVSRV4kYqcIRukuSNy7d7rNymenOCO0Z b1CAzxQFaC3rpADbtJniAnUxB6hhSjDyKAlXI= From: Frederic Weisbecker To: Ingo Molnar Cc: Steven Rostedt , LKML , Frederic Weisbecker Subject: [PATCH] tracing/function-graph-tracer: don't profile branches on graph tracer Date: Sun, 22 Mar 2009 18:01:29 +0100 Message-Id: <1237741289-14926-1-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 1.6.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Impact: fix slow tracing The core kernel tracing is protected against soft branch profiling, but not the x86 ftrace arch part. Let's fix it. Signed-off-by: Frederic Weisbecker --- arch/x86/kernel/Makefile | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 599e9a7..8d9b3f9 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -13,6 +13,7 @@ CFLAGS_REMOVE_rtc.o = -pg CFLAGS_REMOVE_paravirt-spinlocks.o = -pg CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_early_printk.o = -pg +CFLAGS_ftrace.o += -DDISABLE_BRANCH_PROFILING endif # -- 1.6.1