linux-kernel - [PATCH tip/core/rcu 0/17] Torture-test updates for v5.12

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Message-ID: <20210106171532.GA20769@paulmck-ThinkPad-P72>
Date:   Wed, 6 Jan 2021 09:15:32 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, akpm@...ux-foundation.org,
        mathieu.desnoyers@...icios.com, josh@...htriplett.org,
        tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
        dhowells@...hat.com, edumazet@...gle.com, fweisbec@...il.com,
        oleg@...hat.com, joel@...lfernandes.org
Subject: [PATCH tip/core/rcu 0/17] Torture-test updates for v5.12

Hello!

This series provides torture-test updates, and must be applied on top
of the SRCU series.

1.	Add testing for RCU's global memory ordering.

2.	Add debug output for wrong-CPU warning.

3.	Allow summarization of verbose output.

4.	Require entire stutter period be post-boot.

5.	Make synctype[] and nsynctype be static global.

6.	Make rcu_torture_fakewriter() use blocking wait primitives.

7.	Add fuzzed hrtimer-based sleep functions.

8.	Use torture_hrtimeout_jiffies() to avoid busy-waits.

9.	Make stutter use torture_hrtimeout_*() functions.

10.	Use hrtimers for reader and writer delays.

11.	Make refscale throttle high-rate printk()s.

12.	Throttle VERBOSE_TOROUT_*() output.

13.	Make object_debug also double call_rcu() heap object.

14.	Clean up after torture-test CPU hotplugging.

15.	Maintain torture-specific set of CPUs-online books.

16.	Break affinity of kthreads last running on outgoing CPU.

17.	Add rcutree.use_softirq=0 to RUDE01 and TASKS01.

						Thanx, Paul

------------------------------------------------------------------------

 Documentation/admin-guide/kernel-parameters.txt             |   14 
 include/linux/torture.h                                     |   27 +
 kernel/rcu/rcutorture.c                                     |  246 ++++++++----
 kernel/rcu/refscale.c                                       |   25 -
 kernel/scftorture.c                                         |    6 
 kernel/torture.c                                            |  184 +++++++-
 tools/testing/selftests/rcutorture/configs/rcu/RUDE01.boot  |    1 
 tools/testing/selftests/rcutorture/configs/rcu/TASKS01.boot |    1 
 8 files changed, 400 insertions(+), 104 deletions(-)