Re: [PATCH 16/17] rcu: assert static storage for RCU sync and SRCU definitions

On Wed, Oct 07, 2026 at 02:41:05PM -0400, Joel Fernandes wrote:

On Mon, Sep 14, 2026 at 11:13:31PM -0400, Yury Norov wrote:

quoted

DEFINE_RCU_SYNC() contains a statically initialized wait queue. SRCU
static definitions similarly rely on persistent lockdep keys and, in
Tiny SRCU, a statically initialized work item.

Add ASSERT_STATIC_STORAGE() to DEFINE_RCU_SYNC(), both Tree SRCU
__DEFINE_SRCU() variants and Tiny SRCU's common DEFINE_SRCU() declaration.
This covers the non-static FAST and FAST_UPDOWN wrappers too. Tiny SRCU's
explicitly static declarations already enforce the required duration.
The existing per-CPU restrictions on Tree SRCU declarations still apply.

Assisted-by: OpenAI Codex
Signed-off-by: Yury Norov <redacted>

All the changes make sense to me. I'm ok with carrying this for -rcu 7.5
unless you want to take it.

Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>

Thanks Joel, carrying it with the RCU branch is the preferred route IMO.

Thanks,
Yury