Messages in this thread | | | Subject | [PATCH v2 0/4] uprobes/powerpc: Replace ptrace helpers for single stepping | From | "Suzuki K. Poulose" <> | Date | Mon, 03 Dec 2012 20:37:08 +0530 |
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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)
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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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