From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754553Ab2LCPHZ (ORCPT ); Mon, 3 Dec 2012 10:07:25 -0500 Received: from e28smtp05.in.ibm.com ([122.248.162.5]:59010 "EHLO e28smtp05.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753490Ab2LCPHX (ORCPT ); Mon, 3 Dec 2012 10:07:23 -0500 Subject: [PATCH v2 0/4] uprobes/powerpc: Replace ptrace helpers for single stepping To: bigeasy@linutronix.de, oleg@redhat.com, ananth@in.ibm.com, srikar@linux.vnet.ibm.com From: "Suzuki K. Poulose" Cc: peterz@infradead.org, benh@kernel.crashing.org, mingo@elte.hu, anton@redhat.com, linux-kernel@vger.kernel.org Date: Mon, 03 Dec 2012 20:37:08 +0530 Message-ID: <20121203150438.7727.74924.stgit@suzukikp> User-Agent: StGit/0.16 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12120315-8256-0000-0000-000005477583 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following series replaces the ptrace helpers used for single step enable/disable for uprobes on powerpc, with uprobe specific code. We reuse the kprobe code to enable single stepping by making it generic and save/restore the MSR (and DBCR for BookE) across the single step. This series applies on top of the patches posted by Oleg at : https://lkml.org/lkml/2012/10/28/92 Patches have been verified on Power6 and PPC440 (BookE). Changes since V1: * Don't disable external interrupts. (Sebastian) * Introduced routines for saving/restoring the context for sstep. * Restore the context in arch_uprobe_abort_xol() (Oleg) --- Suzuki K. Poulose (4): kprobes/powerpc: Do not disable External interrupts during single step powerpc: Move the single step enable code to a generic path uprobes/powerpc: Introduce routines for save/restore context uprobes/powerpc: Make use of generic routines to enable single step arch/powerpc/include/asm/probes.h | 25 +++++++++++++++++++++++++ arch/powerpc/include/asm/uprobes.h | 4 ++++ arch/powerpc/kernel/kprobes.c | 21 +-------------------- arch/powerpc/kernel/uprobes.c | 32 +++++++++++++++++++++++++------- 4 files changed, 55 insertions(+), 27 deletions(-) -- Suzuki