From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9CB36C7EE26 for ; Tue, 23 May 2023 14:34:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234683AbjEWOen (ORCPT ); Tue, 23 May 2023 10:34:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33788 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231951AbjEWOem (ORCPT ); Tue, 23 May 2023 10:34:42 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E2DE119; Tue, 23 May 2023 07:34:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3431763330; Tue, 23 May 2023 14:34:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D43B9C433EF; Tue, 23 May 2023 14:34:39 +0000 (UTC) Date: Tue, 23 May 2023 10:34:38 -0400 From: Steven Rostedt To: Youling Tang Cc: Huacai Chen , Masami Hiramatsu , Mark Rutland , WANG Xuerui , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, loongarch@lists.linux.dev, loongson-kernel@lists.loongnix.cn, Qing Zhang Subject: Re: [PATCH v2 4/5] LoongArch: ftrace: Add direct call trampoline samples support Message-ID: <20230523103438.7be15275@rorschach.local.home> In-Reply-To: <1682561552-32324-5-git-send-email-tangyouling@loongson.cn> References: <1682561552-32324-1-git-send-email-tangyouling@loongson.cn> <1682561552-32324-5-git-send-email-tangyouling@loongson.cn> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org On Thu, 27 Apr 2023 10:12:31 +0800 Youling Tang wrote: > The ftrace samples need per-architecture trampoline implementations > to save and restore argument registers around the calls to > my_direct_func* and to restore polluted registers (eg: ra). > > Signed-off-by: Qing Zhang > Signed-off-by: Youling Tang > --- > arch/loongarch/Kconfig | 2 + > samples/ftrace/ftrace-direct-modify.c | 34 +++++++++++++++++ > samples/ftrace/ftrace-direct-multi-modify.c | 41 +++++++++++++++++++++ > samples/ftrace/ftrace-direct-multi.c | 25 +++++++++++++ > samples/ftrace/ftrace-direct-too.c | 27 ++++++++++++++ > samples/ftrace/ftrace-direct.c | 23 ++++++++++++ > 6 files changed, 152 insertions(+) Acked-by: Steven Rostedt (Google) -- Steve