From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753167AbcBJRov (ORCPT ); Wed, 10 Feb 2016 12:44:51 -0500 Received: from verein.lst.de ([213.95.11.211]:43207 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752944AbcBJRoq (ORCPT ); Wed, 10 Feb 2016 12:44:46 -0500 In-Reply-To: <20160210174221.EBBEC692C8@newverein.lst.de> References: <20160210174221.EBBEC692C8@newverein.lst.de> From: Torsten Duwe Date: Wed, 10 Feb 2016 17:22:53 +0100 Subject: [PATCH v8 3/8] ppc use ftrace_modify_all_code default To: Michael Ellerman Cc: Jiri Kosina , Miroslav Benes , Petr Mladek , Jessica Yu , Steven Rostedt , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, live-patching@vger.kernel.org Message-Id: <20160210174445.30727692CE@newverein.lst.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Convert ppc's arch_ftrace_update_code from its own function copy to use the generic default functionality (without stop_machine -- our instructions are properly aligned and the replacements atomic ;) With this we gain error checking and the much-needed function_trace_op handling. Signed-off-by: Torsten Duwe --- arch/powerpc/kernel/ftrace.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c index 1fad1b3..ef8b916 100644 --- a/arch/powerpc/kernel/ftrace.c +++ b/arch/powerpc/kernel/ftrace.c @@ -531,20 +531,12 @@ void ftrace_replace_code(int enable) } } +/* Use the default ftrace_modify_all_code, but without + * stop_machine(). + */ void arch_ftrace_update_code(int command) { - if (command & FTRACE_UPDATE_CALLS) - ftrace_replace_code(1); - else if (command & FTRACE_DISABLE_CALLS) - ftrace_replace_code(0); - - if (command & FTRACE_UPDATE_TRACE_FUNC) - ftrace_update_ftrace_func(ftrace_trace_function); - - if (command & FTRACE_START_FUNC_RET) - ftrace_enable_ftrace_graph_caller(); - else if (command & FTRACE_STOP_FUNC_RET) - ftrace_disable_ftrace_graph_caller(); + ftrace_modify_all_code(command); } int __init ftrace_dyn_arch_init(void) -- 1.8.5.6