[PATCH rcu 0/8] RCU torture test and tool updates for v6.4

[Boqun Feng <boqun.feng@gmail.com>]

Hi,

This series contains changes for rcutorture and rcu-related tool, which
are targeted for v6.4.

This is my first time helping prepare PRs, so please take a careful look
and yell at me if there is something wrong. Thanks a lot!

You will also be able to find the series at:

	https://github/fbq/linux rcu/rcutorture.2023.03.11a

top commit is:

	015d88635382

List of changes:

Bhaskar Chowdhury (1):
  tools: rcu: Add usage function and check for argument

Paul E. McKenney (5):
  rcutorture: Add test_nmis module parameter
  rcutorture: Set CONFIG_BOOTPARAM_HOTPLUG_CPU0 to offline CPU 0
  rcutorture: Make scenario TREE04 enable lazy call_rcu()
  torture: Permit kvm-again.sh --duration to default to previous run
  torture: Enable clocksource watchdog with "tsc=watchdog"

Yue Hu (1):
  rcutorture: Eliminate variable n_rcu_torture_boost_rterror

Zqiang (1):
  rcutorture: Create nocb kthreads only when testing rcu in
    CONFIG_RCU_NOCB_CPU=y kernels

 kernel/rcu/rcutorture.c                       | 49 +++++++++++++++----
 tools/rcu/extract-stall.sh                    | 26 +++++++---
 .../selftests/rcutorture/bin/kvm-again.sh     |  2 +-
 .../selftests/rcutorture/bin/torture.sh       |  6 +--
 .../selftests/rcutorture/configs/rcu/TREE01   |  1 +
 .../selftests/rcutorture/configs/rcu/TREE04   |  1 +
 6 files changed, 65 insertions(+), 20 deletions(-)
 mode change 100644 => 100755 tools/rcu/extract-stall.sh

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2.39.2