linux-kernel - [PATCH v6 0/4] *** Latency histograms - IRQSOFF,PREEMPTOFF, Delayed HRTIMERS ***

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Date:   Wed,  7 Sep 2016 16:43:51 +0530
From:   Binoy Jayan <binoy.jayan@...aro.org>
To:     "Steven Rostedt (Red Hat)" <rostedt@...dmis.org>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Daniel Wagner <daniel.wagner@...-carit.de>,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        Masami <masami.hiramatsu@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Binoy Jayan <binoy.jayan@...aro.org>
Subject: [PATCH v6 0/4] *** Latency histograms - IRQSOFF,PREEMPTOFF, Delayed HRTIMERS ***

Hi,

Thank you Daniel, Steven for reviewing the code and for the comments.
These set of patches [v6] capture latency events caused by interrupts and
premption disabled in kernel. The patches are based on the hist trigger
feature developed by Tom Zanussi.

v5: https://lkml.org/lkml/2016/9/2/246
v4: https://lkml.org/lkml/2016/8/30/188
v3: https://lkml.org/lkml/2016/8/29/50
v2: https://lkml.org/lkml/2016/8/24/296

v4 -> v5:
  - Add hist trigger support for generic fields
  - hrtimer latency event moved to hrtimer event headers
  - Cleanup

-Binoy

Binoy Jayan (2):
  tracing: Add trace_irqsoff tracepoints
  tracing: Histogram for delayed hrtimer offsets

Daniel Wagner (2):
  tracing: Deference pointers without RCU checks
  tracing: Add hist trigger support for generic fields

 include/linux/hrtimer.h             |  3 ++
 include/linux/rculist.h             | 36 ++++++++++++++++++++++++
 include/linux/tracepoint.h          |  4 +--
 include/trace/events/latency.h      | 56 +++++++++++++++++++++++++++++++++++++
 include/trace/events/timer.h        | 25 +++++++++++++++++
 kernel/time/Kconfig                 |  7 +++++
 kernel/time/hrtimer.c               | 52 ++++++++++++++++++++++++++++++++++
 kernel/trace/trace_events.c         | 13 +++++----
 kernel/trace/trace_events_filter.c  |  4 +--
 kernel/trace/trace_events_hist.c    | 36 ++++++++++++++++++++----
 kernel/trace/trace_events_trigger.c |  6 ++--
 kernel/trace/trace_irqsoff.c        | 35 +++++++++++++++++++++++
 12 files changed, 258 insertions(+), 19 deletions(-)
 create mode 100644 include/trace/events/latency.h

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