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Re: arm64 kprobes patches
- From: fche at redhat dot com (Frank Ch. Eigler)
- To: Sandeepa Prabhu <sandeepa dot prabhu at linaro dot org>
- Cc: systemtap at sourceware dot org, William Cohen <wcohen at redhat dot com>, Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi 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: Wed, 26 Feb 2014 11:36:03 -0500
- Subject: Re: arm64 kprobes patches
- Authentication-results: sourceware.org; auth=none
- References: <CA+b37P175OWKXcQ-4SYb+AudxOJMe3OC5csoZognNuX7MOaTyQ at mail dot gmail dot com>
Sandeepa Prabhu <sandeepa.prabhu@linaro.org> writes:
> Hi all,
> We have uploaded arm64 kprobes latest changes on linaro git which
> include some fixes for recursive kprobes. [...]
Great.
> 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.
We will try soon.
> Also, please let us know if there are documentation on howto run full
> test-suite for systemtap and various criteria kprobes should meet?
The systemtap README includes these words:
[...]
To run a simple test.
# stap -v -e 'probe vfs.read {printf("read performed\n"); exit()}'
To run the full test suite from the build tree.
# make installcheck
[...]
The full installcheck suite exercises kprobes some, but not in a
stressful mode, like
probe kernel.function("*").* {}
That's partly because the x86 kernel has never been able to survive
such a test. It would be great if arm kprobes were robust enough.
- FChE