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SubjectRe: [PATCH 06/15 V3] perf, c2c: Add in new options to configure latency and stores
On Mon, Mar 31, 2014 at 10:55:35PM -0400, Don Zickus wrote:
> On Sat, Mar 29, 2014 at 06:11:38PM +0100, Jiri Olsa wrote:
> > On Mon, Mar 24, 2014 at 03:36:57PM -0400, Don Zickus wrote:
> > > Modified the code to allow latency settings to be tweaked on the command line
> > > and also the ability to dynamically profile stores (or disable using stores).
> > >
> > > This allows the tool to be used on older Intel platforms like Westmere.
> > >
> > > Signed-off-by: Don Zickus <dzickus@redhat.com>
> > > ---
> >
> > SNIP
> >
> > > @@ -316,6 +369,12 @@ int cmd_c2c(int argc, const char **argv, const char *prefix __maybe_unused)
> > > };
> > > const struct option c2c_options[] = {
> > > OPT_BOOLEAN('r', "raw_records", &c2c.raw_records, "dump raw events"),
> > > + OPT_INTEGER('l', "latency-level", &lat_level,
> > > + "specify the latency threshold for loads [default=30]"),
> > > + OPT_INTEGER('p', "precision-level", &prec_level,
> > > + "specify the precision level of events (0,1,2,3) [default=1]"),
> >
> > could we get also option for user space modifier?
>
> You mean the 'u' modifier, ie cpu/mem-loads/u ? If so, then I can do that
> but will that work with the -a option (which is hardcoded in the c2c
> tool [system-wide mode])?

right, forgot about that.. could the -a option be optional as well?
probably the same way as for record would be the best:

perf c2c record ./foo # workload specific
perf c2c record -a sleep 3 # system wide

jirka


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