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SubjectRe: [PATCH v2 00/40] tracing: Inter-event (e.g. latency) support
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Hi Masami,

On Tue, 2017-09-12 at 10:50 +0900, Masami Hiramatsu wrote:
> On Tue, 5 Sep 2017 16:57:12 -0500
> Tom Zanussi <tom.zanussi@linux.intel.com> wrote:
>
> > Hi,
> >
> > This is V2 of the inter-event tracing patchset.
> >
> > There are too many changes to list in detail, most of them directly
> > addressing input from V1, but here are the major changes from V1
> > (thanks to everyone who reviewed V1 and thanks to both Vedang Patel
> > and Baohong Liu for their contributions and included patches):
> [..]
>
> >
> > Documentation/trace/events.txt | 431 ++++
> > include/linux/ring_buffer.h | 17 +-
> > include/linux/trace_events.h | 24 +-
> > include/linux/tracepoint-defs.h | 1 +
> > kernel/trace/ring_buffer.c | 126 +-
> > kernel/trace/trace.c | 205 +-
> > kernel/trace/trace.h | 25 +-
> > kernel/trace/trace_events.c | 51 +-
> > kernel/trace/trace_events_hist.c | 4472 +++++++++++++++++++++++++++++++----
> > kernel/trace/trace_events_trigger.c | 53 +-
> > kernel/trace/trace_kprobe.c | 18 +-
> > kernel/trace/trace_probe.c | 86 -
> > kernel/trace/trace_probe.h | 7 -
> > kernel/trace/trace_uprobe.c | 2 +-
> > kernel/trace/tracing_map.c | 229 +-
> > kernel/trace/tracing_map.h | 20 +-
> > kernel/tracepoint.c | 18 +-
> > 17 files changed, 5073 insertions(+), 712 deletions(-)
>
> There seems no Makefile and Kconfig changes. Would this mean
> we just need CONFIG_HIST_TRIGGERS=y to enable it?
>

Yes - I didn't see a need for a separate config for this.

> I think you'd better update the HIST_TRIGGER's description
> so that user can notice which should be enabled for inter-event
> tracing.
>

Good point, will do.

Thanks,

Tom


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