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 8B41BECAAD8 for ; Fri, 23 Sep 2022 08:50:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230398AbiIWIuz (ORCPT ); Fri, 23 Sep 2022 04:50:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229787AbiIWIuu (ORCPT ); Fri, 23 Sep 2022 04:50:50 -0400 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 571554BD06; Fri, 23 Sep 2022 01:50:49 -0700 (PDT) Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.55]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4MYm5R4xnjzHqQg; Fri, 23 Sep 2022 16:48:27 +0800 (CST) Received: from huawei.com (10.67.174.53) by kwepemi500012.china.huawei.com (7.221.188.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Fri, 23 Sep 2022 16:50:38 +0800 From: Liao Chang To: , , , , , , , , , , , CC: , , , Subject: [PATCH V3 0/3] kprobe: Optimize the performance of patching ss Date: Fri, 23 Sep 2022 16:46:55 +0800 Message-ID: <20220923084658.99304-1-liaochang1@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.174.53] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500012.china.huawei.com (7.221.188.12) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Single-step slot would not be used until kprobe is enabled, that means no race condition occurs on it under SMP, hence it is safe to pacth ss slot without stopping machine. v3: 1. Drop duplicated I-Cache maintenance for arm64. 2. Add Acked-by from Masami Hiramatsu. v2: Backport riscv patch to cksy and arm64. Liao Chang (3): riscv/kprobe: Optimize the performance of patching single-step slot csky/kprobe: Optimize the performance of patching single-step slot arm64/kprobe: Optimize the performance of patching single-step slot arch/arm64/kernel/probes/kprobes.c | 7 ++----- arch/csky/kernel/probes/kprobes.c | 6 +++++- arch/riscv/kernel/probes/kprobes.c | 8 +++++--- 3 files changed, 12 insertions(+), 9 deletions(-) -- 2.17.1