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![Thomas Gleixner](/assets/img/avatar_default.png)
Add the static and runtime initializer mechanics to support the RT variant of local_lock, which requires the lock type in the lockdep map to be set to LD_LOCK_PERCPU. 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/20210815211305.967526724@linutronix.de
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
#ifndef __LINUX_SPINLOCK_TYPES_RAW_H
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#define __LINUX_SPINLOCK_TYPES_RAW_H
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#include <linux/types.h>
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#if defined(CONFIG_SMP)
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# include <asm/spinlock_types.h>
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#else
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# include <linux/spinlock_types_up.h>
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#endif
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#include <linux/lockdep_types.h>
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typedef struct raw_spinlock {
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arch_spinlock_t raw_lock;
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#ifdef CONFIG_DEBUG_SPINLOCK
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unsigned int magic, owner_cpu;
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void *owner;
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#endif
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#ifdef CONFIG_DEBUG_LOCK_ALLOC
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struct lockdep_map dep_map;
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#endif
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} raw_spinlock_t;
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#define SPINLOCK_MAGIC 0xdead4ead
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#define SPINLOCK_OWNER_INIT ((void *)-1L)
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#ifdef CONFIG_DEBUG_LOCK_ALLOC
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# define RAW_SPIN_DEP_MAP_INIT(lockname) \
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.dep_map = { \
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.name = #lockname, \
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.wait_type_inner = LD_WAIT_SPIN, \
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}
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# define SPIN_DEP_MAP_INIT(lockname) \
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.dep_map = { \
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.name = #lockname, \
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.wait_type_inner = LD_WAIT_CONFIG, \
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}
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# define LOCAL_SPIN_DEP_MAP_INIT(lockname) \
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.dep_map = { \
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.name = #lockname, \
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.wait_type_inner = LD_WAIT_CONFIG, \
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.lock_type = LD_LOCK_PERCPU, \
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}
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#else
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# define RAW_SPIN_DEP_MAP_INIT(lockname)
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# define SPIN_DEP_MAP_INIT(lockname)
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# define LOCAL_SPIN_DEP_MAP_INIT(lockname)
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#endif
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#ifdef CONFIG_DEBUG_SPINLOCK
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# define SPIN_DEBUG_INIT(lockname) \
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.magic = SPINLOCK_MAGIC, \
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.owner_cpu = -1, \
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.owner = SPINLOCK_OWNER_INIT,
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#else
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# define SPIN_DEBUG_INIT(lockname)
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#endif
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#define __RAW_SPIN_LOCK_INITIALIZER(lockname) \
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{ \
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.raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
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SPIN_DEBUG_INIT(lockname) \
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RAW_SPIN_DEP_MAP_INIT(lockname) }
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#define __RAW_SPIN_LOCK_UNLOCKED(lockname) \
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(raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
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#define DEFINE_RAW_SPINLOCK(x) raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
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#endif /* __LINUX_SPINLOCK_TYPES_RAW_H */
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