From patchwork Mon Aug 10 05:02:51 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Ellerman X-Patchwork-Id: 31065 X-Patchwork-Delegate: benh@kernel.crashing.org Return-Path: X-Original-To: patchwork-incoming@bilbo.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id D3D67B6EDE for ; Mon, 10 Aug 2009 15:03:16 +1000 (EST) Received: by ozlabs.org (Postfix) id C8270DDD0B; Mon, 10 Aug 2009 15:03:16 +1000 (EST) Delivered-To: patchwork-incoming@ozlabs.org Received: from bilbo.ozlabs.org (bilbo.ozlabs.org [203.10.76.25]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "bilbo.ozlabs.org", Issuer "CAcert Class 3 Root" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id C6203DDD04 for ; Mon, 10 Aug 2009 15:03:16 +1000 (EST) Received: from bilbo.ozlabs.org (localhost [127.0.0.1]) by bilbo.ozlabs.org (Postfix) with ESMTP id 13191B7DE0 for ; Mon, 10 Aug 2009 15:02:56 +1000 (EST) Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4BA1FB6F1E for ; Mon, 10 Aug 2009 15:02:51 +1000 (EST) Received: by ozlabs.org (Postfix) id 389A7DDD01; Mon, 10 Aug 2009 15:02:51 +1000 (EST) Delivered-To: linuxppc-dev@ozlabs.org Received: by ozlabs.org (Postfix, from userid 1034) id 37109DDD0B; Mon, 10 Aug 2009 15:02:51 +1000 (EST) To: Message-Id: <01690a659df1551b20c20c7cb98dbfe790c7c28d.1249880560.git.michael@ellerman.id.au> From: Michael Ellerman Subject: [PATCH] powerpc: Enable GCOV Date: Mon, 10 Aug 2009 15:02:51 +1000 (EST) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Make it possible to enable GCOV code coverage measurement on powerpc. Lightly tested on 64-bit, seems to work as expected. Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/Makefile | 7 +++++++ arch/powerpc/kernel/vdso32/Makefile | 1 + arch/powerpc/kernel/vdso64/Makefile | 2 ++ arch/powerpc/xmon/Makefile | 2 ++ kernel/gcov/Kconfig | 2 +- 5 files changed, 13 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 035946f..720e8c3 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -115,6 +115,13 @@ ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC),) obj-y += ppc_save_regs.o endif +# Disable GCOV in odd or sensitive code +GCOV_PROFILE_prom_init.o := n +GCOV_PROFILE_ftrace.o := n +GCOV_PROFILE_machine_kexec_64.o := n +GCOV_PROFILE_machine_kexec_32.o := n +GCOV_PROFILE_kprobes.o := n + extra-$(CONFIG_PPC_FPU) += fpu.o extra-$(CONFIG_ALTIVEC) += vector.o extra-$(CONFIG_PPC64) += entry_64.o diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile index c3d57bd..b54b816 100644 --- a/arch/powerpc/kernel/vdso32/Makefile +++ b/arch/powerpc/kernel/vdso32/Makefile @@ -12,6 +12,7 @@ endif targets := $(obj-vdso32) vdso32.so vdso32.so.dbg obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) +GCOV_PROFILE := n EXTRA_CFLAGS := -shared -fno-common -fno-builtin EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 \ diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile index fa7f1b8..dd0c8e9 100644 --- a/arch/powerpc/kernel/vdso64/Makefile +++ b/arch/powerpc/kernel/vdso64/Makefile @@ -7,6 +7,8 @@ obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o targets := $(obj-vdso64) vdso64.so vdso64.so.dbg obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) +GCOV_PROFILE := n + EXTRA_CFLAGS := -shared -fno-common -fno-builtin EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ $(call ld-option, -Wl$(comma)--hash-style=sysv) diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile index 85ab97a..faa81b6 100644 --- a/arch/powerpc/xmon/Makefile +++ b/arch/powerpc/xmon/Makefile @@ -2,6 +2,8 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror +GCOV_PROFILE := n + ifdef CONFIG_PPC64 EXTRA_CFLAGS += -mno-minimal-toc endif diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig index 22e9dcf..654efd0 100644 --- a/kernel/gcov/Kconfig +++ b/kernel/gcov/Kconfig @@ -34,7 +34,7 @@ config GCOV_KERNEL config GCOV_PROFILE_ALL bool "Profile entire Kernel" depends on GCOV_KERNEL - depends on S390 || X86 + depends on S390 || X86 || (PPC && EXPERIMENTAL) default n ---help--- This options activates profiling for the entire kernel.