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Re: arm64 kprobes patches
- From: Sandeepa Prabhu <sandeepa dot prabhu at linaro dot org>
- To: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>
- Cc: systemtap at sourceware dot org, William Cohen <wcohen at redhat dot com>, Petr Machata <pmachata at redhat dot com>, Mark Wielaard <mjw at redhat dot com>, Deepak Saxena <dsaxena at linaro dot org>, Arnd Bergmann <arnd dot bergmann at linaro dot org>, "sandeepa dot prabhu at linux dot com" <sandeepa dot prabhu at linux dot com>
- Date: Thu, 27 Feb 2014 11:49:33 +0530
- Subject: Re: arm64 kprobes patches
- Authentication-results: sourceware.org; auth=none
- References: <CA+b37P175OWKXcQ-4SYb+AudxOJMe3OC5csoZognNuX7MOaTyQ at mail dot gmail dot com> <530E9F9F dot 1060703 at hitachi dot com> <CA+b37P3zOuQdp-M64sKpPvSbQX+12=5f-B34RkVyT0e9RVf4TA at mail dot gmail dot com> <530ED559 dot 7060103 at hitachi dot com>
On 27 February 2014 11:34, Masami Hiramatsu
<masami.hiramatsu.pt@hitachi.com> wrote:
> (2014/02/27 13:56), Sandeepa Prabhu wrote:
>> On 27 February 2014 07:44, Masami Hiramatsu
>> <masami.hiramatsu.pt@hitachi.com> wrote:
>>> (2014/02/27 0:02), Sandeepa Prabhu wrote:
>>>> Hi all,
>>>>
>>>> We have uploaded arm64 kprobes latest changes on linaro git which
>>>> include some fixes for recursive kprobes. These are rebased on top of
>>>> 3.14-rc3. Kprobes support can be enabled by enabling
>>>> "General setup ---> [*] Kprobes" config option.
>>>>
>>>> Git location: git://git.linaro.org/people/sandeepa.prabhu/linux-aarch64.git
>>>> Branch: arm64_kprobes_3.14-rc3
>>>
>>> Great! Thank you for working on that!
>>>
>>>>
>>>> Please let us know if you are interested in pulling this branch for
>>>> systemtap test-suite verification, while we are trying to include
>>>> systemtap test-suite on our linaro open-embedded platforms.
>>>>
>>>> Also, please let us know if there are documentation on howto run full
>>>> test-suite for systemtap and various criteria kprobes should meet?
>>>
>>> One possible testing is putting kprobes on all functions in the
>>> kernel by using ftrace interface. (On x86, current kprobes still has
>>> some problems, and I solved, will send the series later)
>> OK we will try to verify this with arm64 ftrace patches (from linaro)
>> which are close to get accepted upstream.
>> Has your earlier patches (kprobes blacklist related) been queued-up
>> for upstream?
>
> Yes, I updated and will post the series soon. :)
>
>> Are you planning generic kprobes API changes ?
>
> No, actually generic API is still same. But internal API will
> be added.
Ok thanks, this mean we have to update arch-specific code after your
series gets mainlined, we can help testing your patches on arm64,
guess your major verification platform is x86 :)
Cheers,
~Sandeepa
>
> Thank you,
>
> --
> Masami HIRAMATSU
> IT Management Research Dept. Linux Technology Center
> Hitachi, Ltd., Yokohama Research Laboratory
> E-mail: masami.hiramatsu.pt@hitachi.com
>
>