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Re: arm64 kprobes patches
- From: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>
- To: Sandeepa Prabhu <sandeepa dot prabhu at linaro dot org>
- 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 15:04:09 +0900
- 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>
(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.
Thank you,
--
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com