linux-kernel - [PATCH v2 0/4] uprobes/powerpc: Replace ptrace helpers for single stepping

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Message-ID: <20121203150438.7727.74924.stgit@suzukikp>
Date:	Mon, 03 Dec 2012 20:37:08 +0530
From:	"Suzuki K. Poulose" <suzuki@...ibm.com>
To:	bigeasy@...utronix.de, oleg@...hat.com, ananth@...ibm.com,
	srikar@...ux.vnet.ibm.com
Cc:	peterz@...radead.org, benh@...nel.crashing.org, mingo@...e.hu,
	anton@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/4] uprobes/powerpc: Replace ptrace helpers for single
 stepping

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

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