From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752722AbbJZR4r (ORCPT ); Mon, 26 Oct 2015 13:56:47 -0400 Received: from verein.lst.de ([213.95.11.211]:55137 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751183AbbJZR4q (ORCPT ); Mon, 26 Oct 2015 13:56:46 -0400 Date: Mon, 26 Oct 2015 18:56:44 +0100 From: Torsten Duwe To: Steven Rostedt , Michael Ellerman Cc: Jiri Kosina , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, live-patching@vger.kernel.org Subject: [PATCH v3 2/8] ppc use ftrace_modify_all_code default Message-ID: <20151026175644.GC29592@lst.de> References: <20151026174930.GA29592@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151026174930.GA29592@lst.de> User-Agent: Mutt/1.5.17 (2007-11-01) 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 310137f..e419c7b 100644 --- a/arch/powerpc/kernel/ftrace.c +++ b/arch/powerpc/kernel/ftrace.c @@ -511,20 +511,12 @@ 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