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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-14 03:01:28 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-14 03:01:28 +0300 |
| commit | 48fc82c40bc29a80361b1eab0e4a9494628a7144 (patch) | |
| tree | e5be91e08b0e4b80e15b9c945ed715cffaa532bc /include/linux | |
| parent | a7c840ba5fa78d7761b9fedc33d69cef44986d79 (diff) | |
| parent | 532453e7aa78f3962fb4d86caf40ff81ebf62160 (diff) | |
| download | linux-48fc82c40bc29a80361b1eab0e4a9494628a7144.tar.xz | |
Merge tag 'locking-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Over a dozen code generation micro-optimizations for the atomic
and spinlock code
- Add more __ro_after_init attributes
- Robustify the lockdevent_*() macros
* tag 'locking-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/pvqspinlock/x86: Use _Q_LOCKED_VAL in PV_UNLOCK_ASM macro
locking/qspinlock/x86: Micro-optimize virt_spin_lock()
locking/atomic/x86: Merge __arch{,_try}_cmpxchg64_emu_local() with __arch{,_try}_cmpxchg64_emu()
locking/atomic/x86: Introduce arch_try_cmpxchg64_local()
locking/pvqspinlock/x86: Remove redundant CMP after CMPXCHG in __raw_callee_save___pv_queued_spin_unlock()
locking/pvqspinlock: Use try_cmpxchg() in qspinlock_paravirt.h
locking/pvqspinlock: Use try_cmpxchg_acquire() in trylock_clear_pending()
locking/qspinlock: Use atomic_try_cmpxchg_relaxed() in xchg_tail()
locking/atomic/x86: Define arch_atomic_sub() family using arch_atomic_add() functions
locking/atomic/x86: Rewrite x86_32 arch_atomic64_{,fetch}_{and,or,xor}() functions
locking/atomic/x86: Introduce arch_atomic64_read_nonatomic() to x86_32
locking/atomic/x86: Introduce arch_atomic64_try_cmpxchg() to x86_32
locking/atomic/x86: Introduce arch_try_cmpxchg64() for !CONFIG_X86_CMPXCHG64
locking/atomic/x86: Modernize x86_32 arch_{,try_}_cmpxchg64{,_local}()
locking/atomic/x86: Correct the definition of __arch_try_cmpxchg128()
x86/tsc: Make __use_tsc __ro_after_init
x86/kvm: Make kvm_async_pf_enabled __ro_after_init
context_tracking: Make context_tracking_key __ro_after_init
jump_label,module: Don't alloc static_key_mod for __ro_after_init keys
locking/qspinlock: Always evaluate lockevent* non-event parameter once
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/jump_label.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index f0a949b7c973..f5a2727ca4a9 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -216,6 +216,7 @@ extern struct jump_entry __start___jump_table[]; extern struct jump_entry __stop___jump_table[]; extern void jump_label_init(void); +extern void jump_label_init_ro(void); extern void jump_label_lock(void); extern void jump_label_unlock(void); extern void arch_jump_label_transform(struct jump_entry *entry, @@ -265,6 +266,8 @@ static __always_inline void jump_label_init(void) static_key_initialized = true; } +static __always_inline void jump_label_init_ro(void) { } + static __always_inline bool static_key_false(struct static_key *key) { if (unlikely_notrace(static_key_count(key) > 0)) |