Merge branch 'netconsole-replace-target_list_lock-by-rcu-on-userdata-hot-path'

Breno Leitao says:

====================
netconsole: replace target_list_lock by RCU on userdata hot path

I would like to move netconsole to use RCU on the hot path for
a while instead of target_list_lock. My goal is to have no lock on the
tx side at all and eventually drop CON_NBCON_ATOMIC_UNSAFE, if that is
possible [1].

Start removing target_list_lock on certain parts of the code. This patch
transforms the userdata array into a RCU-protected pointer, and uses the
dynamic mutex as the write lock.

Added a selftest, given we didn't have any netconsole selftest for
userdata operations. Feel free to drop it if this is not useful, dear
maintainers.

Link: https://lore.kernel.org/all/20251121-nbcon-v1-0-503d17b2b4af@debian.org/[1]

Signed-off-by: Breno Leitao <leitao@debian.org>
====================

Link: https://patch.msgid.link/20260810-netcons-userdata-rcu-v3-0-f65557f769ce@debian.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

0 files changed, 0 insertions, 0 deletions