diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-08-15 23:28:23 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2021-08-17 17:43:24 +0200 |
| commit | 342a93247e0837101f27bbcca26f402902df98dc (patch) | |
| tree | e7e298f8a4fba435fd8164a82d96f77e6dfa467f /include/linux/spinlock.h | |
| parent | locking/spinlock: Provide RT specific spinlock_t (diff) | |
| download | wireguard-linux-342a93247e0837101f27bbcca26f402902df98dc.tar.xz wireguard-linux-342a93247e0837101f27bbcca26f402902df98dc.zip | |
locking/spinlock: Provide RT variant header: <linux/spinlock_rt.h>
Provide the necessary wrappers around the actual rtmutex based spinlock
implementation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211303.712897671@linutronix.de
Diffstat (limited to 'include/linux/spinlock.h')
| -rw-r--r-- | include/linux/spinlock.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 5803b56622a8..45310ea1b1d7 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -312,8 +312,10 @@ static inline void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock) 1 : ({ local_irq_restore(flags); 0; }); \ }) -/* Include rwlock functions */ +#ifndef CONFIG_PREEMPT_RT +/* Include rwlock functions for !RT */ #include <linux/rwlock.h> +#endif /* * Pull the _spin_*()/_read_*()/_write_*() functions/declarations: @@ -324,6 +326,9 @@ static inline void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock) # include <linux/spinlock_api_up.h> #endif +/* Non PREEMPT_RT kernel, map to raw spinlocks: */ +#ifndef CONFIG_PREEMPT_RT + /* * Map the spin_lock functions to the raw variants for PREEMPT_RT=n */ @@ -458,6 +463,10 @@ static __always_inline int spin_is_contended(spinlock_t *lock) #define assert_spin_locked(lock) assert_raw_spin_locked(&(lock)->rlock) +#else /* !CONFIG_PREEMPT_RT */ +# include <linux/spinlock_rt.h> +#endif /* CONFIG_PREEMPT_RT */ + /* * Pull the atomic_t declaration: * (asm-mips/atomic.h needs above definitions) |