From patchwork Mon Oct 26 17:57:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Torsten Duwe X-Patchwork-Id: 536130 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id A5A951412FD for ; Tue, 27 Oct 2015 04:58:56 +1100 (AEDT) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 8B8831A0D21 for ; Tue, 27 Oct 2015 04:58:56 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from newverein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 73BD91A0CE0 for ; Tue, 27 Oct 2015 04:57:48 +1100 (AEDT) Received: by newverein.lst.de (Postfix, from userid 2005) id 5054C69202; Mon, 26 Oct 2015 18:57:45 +0100 (CET) Date: Mon, 26 Oct 2015 18:57:45 +0100 From: Torsten Duwe To: Steven Rostedt , Michael Ellerman Subject: Re: [PATCH v3 0/8] ftrace with regs + live patching for ppc64 LE (ABI v2) Message-ID: <20151026175745.GD29592@lst.de> References: <20151026174930.GA29592@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20151026174930.GA29592@lst.de> User-Agent: Mutt/1.5.17 (2007-11-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jiri Kosina , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, live-patching@vger.kernel.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" * Makefile: - globally use -mprofile-kernel in case it's configured. * arch/powerpc/Kconfig / kernel/trace/Kconfig: - declare that ppc64 HAVE_MPROFILE_KERNEL and HAVE_DYNAMIC_FTRACE_WITH_REGS, and use it. Signed-off-by: Torsten Duwe --- arch/powerpc/Kconfig | 2 ++ arch/powerpc/Makefile | 7 +++++++ kernel/trace/Kconfig | 5 +++++ 3 files changed, 14 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 9a7057e..0e6011c 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -97,8 +97,10 @@ config PPC select OF_RESERVED_MEM select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE + select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER + select HAVE_MPROFILE_KERNEL select SYSCTL_EXCEPTION_TRACE select ARCH_WANT_OPTIONAL_GPIOLIB select VIRT_TO_BUS if !PPC64 diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index b9b4af2..25d0034 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -133,6 +133,13 @@ else CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 endif +ifeq ($(CONFIG_PPC64),y) +ifdef CONFIG_HAVE_MPROFILE_KERNEL +CC_FLAGS_FTRACE := -pg $(call cc-option,-mprofile-kernel) +KBUILD_CPPFLAGS += -DCC_USING_MPROFILE_KERNEL +endif +endif + CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 1153c43..dbcb635 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -52,6 +52,11 @@ config HAVE_FENTRY help Arch supports the gcc options -pg with -mfentry +config HAVE_MPROFILE_KERNEL + bool + help + Arch supports the gcc options -pg with -mprofile-kernel + config HAVE_C_RECORDMCOUNT bool help