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

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

Thank you,



--
Masami Hiramatsu <mhiramat@kernel.org>

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