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SubjectRe: [PATCH v2 1/3] tracing,x86: add a TSC trace_clock
On Wed, Sep 12, 2012 at 6:23 PM, Steven Rostedt <> wrote:
> This change will require an ack from one of the x86 maintainers.
> For reference to this patch, please see this thread:
> On Wed, 2012-09-12 at 16:31 -0700, David Sharp wrote:
>> In order to promote interoperability between userspace tracers and ftrace,
>> add a trace_clock that reports raw TSC values which will then be recorded
>> in the ring buffer. Userspace tracers that also record TSCs are then on
>> exactly the same time base as the kernel and events can be unambiguously
>> interlaced.
>> Tested: Enabled a tracepoint and the "tsc" trace_clock and saw very large
>> timestamp values.
>> v2:
>> Move arch-specific bits out of generic code.
> As Masami pointed out, please add a SOB to your patches.

Sorry about that. I guess that's what happens when I rush before going
on vacation. Apparently I did `git format-patch --signoff` the first
time instead of in the commit.

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