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SubjectRe: [GIT PULL] tracing/kprobes: Kprobes core/tracing/profiling updates

* Frederic Weisbecker <fweisbec@gmail.com> wrote:

> Hi Ingo,
>
> Kprobes has been nicely improved lately. The x86 instruction decoder
> has been fixed to support cross builds and mmx instruction set,
> besides of a lot of various kprobes core fixes.
>
> The tracing part has evolved too, we can define human names for
> arguments and custom subsystem names for dynamic tracepoints.
>
> And also kprobes profiling and raw dynamic tracepoint samples are now
> supported through perf. Looks like most of the kernel parts are now in
> place for a perf support. Things are going to be focused on a perf
> kprobes tool to exploit that.

Nice progress. What's the expected timeline of exhaustive tools/perf/
support?

> Concerning this git tree, based on tip:/tracing/kprobes, I had to
> merge tracing/core inside few weeks ago because it needed build fixes
> that were in tracing/core (the merge commit provides the details). The
> tree is self contained but it's already async with recent upstream
> tracing updates. It means that merging upstream tree or tracing/core
> inside may result in non-trivial conflicts. I can handle them, or
> rebase the whole, as you prefer.
>
> The tree can be found at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
> tracing/kprobes

Would be nice to merge latest -git into this tree and resolve the
conflicts:

kernel/trace/Makefile
kernel/trace/trace.h
kernel/trace/trace_event_types.h
kernel/trace/trace_export.c

Then i could pull it into tip:tracing/kprobes for more testing.

Ingo


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