[GIT PULL] CSD-lock diagnostic changes for v6.7

[Paul E. McKenney]

Hello, Linus,

Please pull the following CSD-lock change:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git tags/csd-lock.2023.10.23a
  # HEAD: 94b3f0b5af2c7af69e3d6e0cdd9b0ea535f22186: smp,csd: Throw an error if a CSD lock is stuck for too long (2023-10-16 16:06:37 -0700)

----------------------------------------------------------------
CSD lock commits for v6.7

This series adds a kernel boot parameter that causes the kernel to
panic if one of the call_smp_function() APIs is stalled for more than
the specified duration.  This is useful in deployments in which a clean
panic is preferable to an indefinite stall.

----------------------------------------------------------------
Rik van Riel (1):
      smp,csd: Throw an error if a CSD lock is stuck for too long

 Documentation/admin-guide/kernel-parameters.txt |  7 +++++++
 kernel/smp.c                                    | 13 ++++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)