* Andi Kleen <[email protected]> wrote:
> On Sat, Jan 26, 2013 at 12:54:02PM +0100, Ingo Molnar wrote:
> >
> > * Andi Kleen <[email protected]> wrote:
> >
> > > From: Andi Kleen <[email protected]>
> > >
> > > Implement the TSX transaction and checkpointed transaction
> > > qualifiers for Haswell. This allows e.g. to profile the number
> > > of cycles in transactions.
> >
> > The changelog should explain why this is a basic feature
> > that is a must-have to have basic perf support. (i.e.
> > default 'perf record', 'perf report', 'perf stat' and 'perf
> > top' works and is meaningful.)
>
> The patch is not needed for primitive cycle sampling only.
So please re-send a truly minimal hw-enabling series first, as
requested - a minimal series that enables most of the everyday
usecases.
> These qualifiers are a fundamental feature for any TSX tuning.
Any new, Haswell-specific profiling features should obviously be
in a second (or third) series of patches.
Thanks,
Ingo
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