From patchwork Thu Sep 8 02:25:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12969582 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AB98AECAAD3 for ; Thu, 8 Sep 2022 02:25:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Kk9CMgGG3uoKF5XXw1QN56Li+fkqrYGc32kw0Ahc84I=; b=HRzcer7G5jRI+Q 4ZrIS5K3GuIVHhWXRzFcwlXShODTDVg9N7WUoFpfnaUOb7rNqDXXzLpiUTLS3HCQeJIbHxEJzIqP7 OPIjxYrRhMWyqPW+Lwx65u8N2S2pDaHRdJTxZCfWMe3Zs01fX7HJavE3N/LhQjAjE9bvFwRvYqYFj 7goMKELlQt5yWUasQyVYC6leIiR5HVNWKULlYgXAqs92CW0dDu94CXlAWdgq7pDlKZRP2MD+zD3QK evACXzadpFxQXiMWU4YClS1Npz12f+HpDLh9+venGsEwenSZqqyKPvwF2SSQ7OK0ib+2Qxad2AMbY gVXYbAqIEfY0IwMMJlzw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oW7Ee-00EfJO-Iz; Thu, 08 Sep 2022 02:25:44 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oW7Eb-00EfGy-M7 for linux-riscv@lists.infradead.org; Thu, 08 Sep 2022 02:25:42 +0000 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 4753461B41; Thu, 8 Sep 2022 02:25:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8290C43470; Thu, 8 Sep 2022 02:25:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662603939; bh=thj4lp5B0J2/kj7Zi1BMTTtT9fAnJMteMKwuLQ0ArOk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m+OwQrFHV741dq/wnKQO5siVbdtwGveAXdqI5KGHCuzkACFYNjhzfOFm1ZW2iR32E 68eLvrwOauiVv2bTscSNYudonOOIKpNMHCixpV9bwUs7PCKfdXu6w88wcd2NFNz5Vz IT7swzOan01VAOcfVlRyCyrAsA+vhQ4KxYOIYZJ4X5NS7eJpOkSZMM3FrkgpIP4w7t /Rx6dsphmTmmSR90DZRMBYKo6ltWGtyr8MtC2fXPUxcVEpqvqrUZZ/mlM9FCpHZtXC 72P3jK8whkph33B+ZUkqrwPouuluHiv4iDXiW+EXW4oA/djggYrQfP4NXwWj2by9oO o3qDVrB70Xc8Q== From: guoren@kernel.org To: arnd@arndb.de, guoren@kernel.org, palmer@rivosinc.com, tglx@linutronix.de, peterz@infradead.org, luto@kernel.org, conor.dooley@microchip.com, heiko@sntech.de, jszhang@kernel.org, lazyparser@gmail.com, falcon@tinylab.org, chenhuacai@kernel.org, apatel@ventanamicro.com, atishp@atishpatra.org, palmer@dabbelt.com, paul.walmsley@sifive.com, bigeasy@linutronix.de Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren , Oleg Nesterov Subject: [PATCH V4 3/8] riscv: ptrace: Remove duplicate operation Date: Wed, 7 Sep 2022 22:25:01 -0400 Message-Id: <20220908022506.1275799-4-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220908022506.1275799-1-guoren@kernel.org> References: <20220908022506.1275799-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220907_192541_768457_9344036B X-CRM114-Status: UNSURE ( 9.29 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren The TIF_SYSCALL_TRACE is controlled by a common code, see kernel/ptrace.c and include/linux/thread.h. clear_task_syscall_work(child, SYSCALL_TRACE); Signed-off-by: Guo Ren Signed-off-by: Guo Ren Reviewed-by: Oleg Nesterov --- arch/riscv/kernel/ptrace.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c index 2ae8280ae475..44f4b1ca315d 100644 --- a/arch/riscv/kernel/ptrace.c +++ b/arch/riscv/kernel/ptrace.c @@ -212,7 +212,6 @@ unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n) void ptrace_disable(struct task_struct *child) { - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); } long arch_ptrace(struct task_struct *child, long request,