linux-kernel - [PATCH RFC 0/2] Tests for preemptoff and irqsoff tracers

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Date:   Thu, 17 May 2018 18:59:00 -0700
From:   Joel Fernandes <joelaf@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Peter Zilstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Glexiner <tglx@...utronix.de>,
        Boqun Feng <boqun.feng@...il.com>,
        Paul McKenney <paulmck@...ux.vnet.ibm.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Todd Kjos <tkjos@...gle.com>,
        Erick Reyes <erickreyes@...gle.com>,
        Julia Cartwright <julia@...com>, kernel-team@...roid.com
Subject: [PATCH RFC 0/2] Tests for preemptoff and irqsoff tracers

From: "Joel Fernandes (Google)" <joel@...lfernandes.org>

Hi,
Here is test code and kselftest for testing the preemptoff and irqsoff
tracers. I am posting it separately just for early feedback since its
the first time I'm writing a kselftest.

I am planning to include these tests in the next series posting of
"Centralize and unify usage of preempt/irq tracepoints" [1]

By the way, other than these I have also completed testing with Ingo's
locking API test suite for [1]. I will include these and other results
in the v7 posting of [1].

[1] http://lkml.iu.edu/hypermail/linux/kernel/1805.0/04948.html

Joel Fernandes (Google) (2):
  lib: Add module to simulate atomic sections for testing
    {preempt,irqs}off tracers
  kselftests: ftrace: Add tests for the preemptoff and irqsoff tracers

 lib/Kconfig.debug                             |  9 +++
 lib/Makefile                                  |  1 +
 lib/test_atomic_sections.c                    | 80 +++++++++++++++++++
 tools/testing/selftests/ftrace/config         |  3 +
 .../test.d/preemptirq/irqsoff_tracer.tc       | 74 +++++++++++++++++
 5 files changed, 167 insertions(+)
 create mode 100644 lib/test_atomic_sections.c
 create mode 100644 tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc

Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Peter Zilstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: Tom Zanussi <tom.zanussi@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Thomas Glexiner <tglx@...utronix.de>
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: Paul McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Todd Kjos <tkjos@...gle.com>
Cc: Erick Reyes <erickreyes@...gle.com>
Cc: Julia Cartwright <julia@...com>
Cc: kernel-team@...roid.com
Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>

-- 
2.17.0.441.gb46fe60e1d-goog