[RFC v3 00/12] LKMM generic atomics in Rust

[Boqun Feng]

Hi,

v3 for LKMM atomics in Rust, you can find the previous versions:

v2: https://lore.kernel.org/rust-for-linux/20241101060237.1185533-1-boqun.feng@gmail.com/
v1: https://lore.kernel.org/rust-for-linux/20240612223025.1158537-1-boqun.feng@gmail.com/
wip: https://lore.kernel.org/rust-for-linux/20240322233838.868874-1-boqun.feng@gmail.com/

Changes since v2:

*	Drop the temporary RCU binding since they are already in
	mainline.

*	Fix a few "Ipml" typos in previous versions per feedback from
	Alice Ryhl.

*	Documentation improvement per feedback from Alice Ryhl.

I'm hoping to at least get the first 8 patches (atomic operations on
normal integer) in a good shape so that we can have them in v6.16.
Thanks!

Regards,
Boqun

Boqun Feng (12):
  rust: Introduce atomic API helpers
  rust: sync: Add basic atomic operation mapping framework
  rust: sync: atomic: Add ordering annotation types
  rust: sync: atomic: Add generic atomics
  rust: sync: atomic: Add atomic {cmp,}xchg operations
  rust: sync: atomic: Add the framework of arithmetic operations
  rust: sync: atomic: Add Atomic<u{32,64}>
  rust: sync: atomic: Add Atomic<{usize,isize}>
  rust: sync: atomic: Add Atomic<*mut T>
  rust: sync: atomic: Add arithmetic ops for Atomic<*mut T>
  rust: sync: Add memory barriers
  rust: sync: rcu: Add RCU protected pointer

 MAINTAINERS                               |    4 +-
 rust/helpers/atomic.c                     | 1038 +++++++++++++++++++++
 rust/helpers/barrier.c                    |   18 +
 rust/helpers/helpers.c                    |    2 +
 rust/kernel/sync.rs                       |    2 +
 rust/kernel/sync/atomic.rs                |  228 +++++
 rust/kernel/sync/atomic/generic.rs        |  488 ++++++++++
 rust/kernel/sync/atomic/ops.rs            |  199 ++++
 rust/kernel/sync/atomic/ordering.rs       |   94 ++
 rust/kernel/sync/barrier.rs               |   67 ++
 rust/kernel/sync/rcu.rs                   |  275 +++++-
 scripts/atomic/gen-atomics.sh             |    1 +
 scripts/atomic/gen-rust-atomic-helpers.sh |   65 ++
 13 files changed, 2479 insertions(+), 2 deletions(-)
 create mode 100644 rust/helpers/atomic.c
 create mode 100644 rust/helpers/barrier.c
 create mode 100644 rust/kernel/sync/atomic.rs
 create mode 100644 rust/kernel/sync/atomic/generic.rs
 create mode 100644 rust/kernel/sync/atomic/ops.rs
 create mode 100644 rust/kernel/sync/atomic/ordering.rs
 create mode 100644 rust/kernel/sync/barrier.rs
 create mode 100755 scripts/atomic/gen-rust-atomic-helpers.sh

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2.47.1