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| author | Marco Elver <elver@google.com> | 2025-12-19 18:40:04 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-01-05 18:43:30 +0300 |
| commit | f0b7ce22d71810c8c11abcd912fbd6f57c2e9677 (patch) | |
| tree | 16e660a2cc2a3ca5ff05d737a012b533b0b54afb /include/linux/srcutiny.h | |
| parent | fe00f6e84621ad441aa99005f2f0fefd0e5e1a2c (diff) | |
| download | linux-f0b7ce22d71810c8c11abcd912fbd6f57c2e9677.tar.xz | |
srcu: Support Clang's context analysis
Add support for Clang's context analysis for SRCU.
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://patch.msgid.link/20251219154418.3592607-16-elver@google.com
Diffstat (limited to 'include/linux/srcutiny.h')
| -rw-r--r-- | include/linux/srcutiny.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h index e0698024667a..dec7cbe015aa 100644 --- a/include/linux/srcutiny.h +++ b/include/linux/srcutiny.h @@ -73,6 +73,7 @@ void synchronize_srcu(struct srcu_struct *ssp); * index that must be passed to the matching srcu_read_unlock(). */ static inline int __srcu_read_lock(struct srcu_struct *ssp) + __acquires_shared(ssp) { int idx; @@ -80,6 +81,7 @@ static inline int __srcu_read_lock(struct srcu_struct *ssp) idx = ((READ_ONCE(ssp->srcu_idx) + 1) & 0x2) >> 1; WRITE_ONCE(ssp->srcu_lock_nesting[idx], READ_ONCE(ssp->srcu_lock_nesting[idx]) + 1); preempt_enable(); + __acquire_shared(ssp); return idx; } @@ -96,22 +98,26 @@ static inline struct srcu_ctr __percpu *__srcu_ctr_to_ptr(struct srcu_struct *ss } static inline struct srcu_ctr __percpu *__srcu_read_lock_fast(struct srcu_struct *ssp) + __acquires_shared(ssp) { return __srcu_ctr_to_ptr(ssp, __srcu_read_lock(ssp)); } static inline void __srcu_read_unlock_fast(struct srcu_struct *ssp, struct srcu_ctr __percpu *scp) + __releases_shared(ssp) { __srcu_read_unlock(ssp, __srcu_ptr_to_ctr(ssp, scp)); } static inline struct srcu_ctr __percpu *__srcu_read_lock_fast_updown(struct srcu_struct *ssp) + __acquires_shared(ssp) { return __srcu_ctr_to_ptr(ssp, __srcu_read_lock(ssp)); } static inline void __srcu_read_unlock_fast_updown(struct srcu_struct *ssp, struct srcu_ctr __percpu *scp) + __releases_shared(ssp) { __srcu_read_unlock(ssp, __srcu_ptr_to_ctr(ssp, scp)); } |