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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h0l7s-0008Kl-HH; Mon, 04 Mar 2019 10:47:16 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h0l7q-0008KO-Bp for linux-arm-kernel@lists.infradead.org; Mon, 04 Mar 2019 10:47:15 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B5DB9EBD; Mon, 4 Mar 2019 02:47:13 -0800 (PST) Received: from e107155-lin (e107155-lin.cambridge.arm.com [10.1.196.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 145873F703; Mon, 4 Mar 2019 02:47:10 -0800 (PST) Date: Mon, 4 Mar 2019 10:46:43 +0000 From: Sudeep Holla To: "Haibo Xu (Arm Technology China)" Subject: Re: [PATCH 2/6] ptrace: introduce ptrace_syscall_enter to consolidate PTRACE_SYSEMU handling Message-ID: <20190304104643.GA28643@e107155-lin> References: <20190228183220.15626-1-sudeep.holla@arm.com> <20190228183220.15626-3-sudeep.holla@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190304_024714_412334_36B33945 X-CRM114-Status: GOOD ( 15.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Steve Capper , Catalin Marinas , "jdike@addtoit.com" , "x86@kernel.org" , Will Deacon , "linux-kernel@vger.kernel.org" , Oleg Nesterov , Richard Weinberger , Ingo Molnar , Paul Mackerras , Michael Ellerman , Thomas Gleixner , "Bin Lu \(Arm Technology China\)" , "linuxppc-dev@lists.ozlabs.org" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Mar 04, 2019 at 08:03:47AM +0000, Haibo Xu (Arm Technology China) wrote: > On 2019/3/1 2:32, Sudeep Holla wrote: > > Currently each architecture handles PTRACE_SYSEMU in very similar way. > > It's completely arch independent and can be handled in the code helping > > to consolidate PTRACE_SYSEMU handling. > > > > Let's introduce a hook 'ptrace_syscall_enter' that arch specific syscall > > entry code can call. > > > > The 'ptrace_syscall_enter' is dedicated for PTRACE_SYSEMU flag, > So I suggest to rename the function to something like 'ptrace_syscall_emu_enter". > I am fine to rename. > > +/* > > + * Hook to check and report for PTRACE_SYSEMU, can be called from arch > > + * arch syscall entry code > > + */ > > +long ptrace_syscall_enter(struct pt_regs *regs) > > +{ > > +#ifdef TIF_SYSCALL_EMU > > + if (test_thread_flag(TIF_SYSCALL_EMU)) { > > + if (tracehook_report_syscall_entry(regs)); > > Shall we remove the semi-colon at end of the above line? > Added intentionally to keep GCC happy. -- Regards, Sudeep _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel