Merge branches 'cmpxchg.2024.05.11a', 'kcsan.2024.05.07a', 'lkmm.2024.05.06a', 'rcu-merge.2024.05.01a' and 'tsc.2024.04.09c' into HEAD cmpxchg.2024.05.11a: Single-byte cmpxchg() emulation and use in csky. kcsan.2024.05.07a: Add __data_racy type qualifier. lkmm.2024.05.06a: Linux kernel memory model updates. rcu-merge.2024.05.01a: RCU commits (via Uladzislau Rezki). tsc.2024.04.09c: TSC watchdog updates (likely via -tip).