From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752484Ab3B1LA4 (ORCPT ); Thu, 28 Feb 2013 06:00:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:13085 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751163Ab3B1LAy (ORCPT ); Thu, 28 Feb 2013 06:00:54 -0500 From: Anton Arapov To: Anton Arapov , Oleg Nesterov , Srikar Dronamraju Cc: LKML , Josh Stone , Frank Eigler , Peter Zijlstra , Ingo Molnar , Ananth N Mavinakayanahalli Subject: [RFC PATCH v3 0/6] uprobes: return probe implementation Date: Thu, 28 Feb 2013 12:00:09 +0100 Message-Id: <1362049215-5780-1-git-send-email-anton@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, RFC v3 uretprobes implementation. I'd be grateful for review. These patches extending uprobes by enabling tools, such as perf(trace_event), set a breakpoint on probed function's return address. v3 changes: - removed uretprobe_bypass logic, it will be better to send it as independent patch - unified xol_get_trampoline_slot() and xol_get_insn_slot() - protected uprobe with refcounter in prepare_uretprobe() - uprobe_register() routine fails now, if neither consumer is set - enclosed implementation into 1/6, 6/6 patches -ENOSYS bits v2 changes: - introduced rp_handler(), get rid of return_consumers - get rid of uretprobe_[un]register() - introduced arch_uretprobe_get_sp() - removed uprobe_task->doomed, kill task immediately - fix arch_uretprobe_hijack_return_addr()'s returns - address the v1 minor issues integrated patchset: http://github.com/arapov/linux-aa/commits/uretprobes_v3 previous implementations: RFCv2: https://lkml.org/lkml/2013/1/9/157 RFCv1: https://lkml.org/lkml/2012/12/21/133 thanks, Anton Anton Arapov (6): uretprobes: preparation patch uretprobes/x86: hijack return address uretprobes: generalize xol_get_insn_slot() uretprobes: return probe entry, prepare uretprobe uretprobes: invoke return probe handlers uretprobes: implemented, thus remove -ENOSYS arch/x86/include/asm/uprobes.h | 6 +++ arch/x86/kernel/uprobes.c | 29 +++++++++++ include/linux/uprobes.h | 6 +++ kernel/events/uprobes.c | 112 ++++++++++++++++++++++++++++++++++++++--- 4 files changed, 146 insertions(+), 7 deletions(-) -- 1.8.1.2