mirror of https://github.com/schoebel/mars
90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
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// (c) 2010 Thomas Schoebel-Theuer / 1&1 Internet AG
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#ifndef BRICK_LOCKS_H
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#define BRICK_LOCKS_H
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#include <linux/spinlock.h>
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#include "brick_say.h"
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#ifdef CONFIG_DEBUG_SPINLOCK
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#include <linux/sched.h>
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# define LOCK_CHECK(OP) \
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({ \
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if (atomic_read(¤t->lock_count)) { \
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BRICK_ERR("never call " #OP "() with a spinlock held.\n"); \
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} \
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})
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# define traced_lock(spinlock,flags) \
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do { \
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if (atomic_read(¤t->lock_count)) { \
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BRICK_ERR("please do not nest spinlocks at line %d, reorganize your code.\n", __LINE__); \
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} \
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atomic_inc(¤t->lock_count); \
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(void)flags; \
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spin_lock_irqsave(spinlock, flags); \
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} while (0)
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# define traced_unlock(spinlock,flags) \
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do { \
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spin_unlock_irqrestore(spinlock, flags); \
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atomic_dec(¤t->lock_count); \
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} while (0)
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# define traced_readlock(spinlock,flags) \
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do { \
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if (atomic_read(¤t->lock_count)) { \
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BRICK_ERR("please do not nest spinlocks at line %d, reorganize your code.\n", __LINE__); \
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} \
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atomic_inc(¤t->lock_count); \
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(void)flags; \
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read_lock(spinlock); \
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} while (0)
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# define traced_readunlock(spinlock,flags) \
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do { \
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/*spin_unlock_irqrestore(spinlock,flags);*/ \
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read_unlock(spinlock); \
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atomic_dec(¤t->lock_count); \
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} while (0)
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# define traced_writelock(spinlock,flags) \
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do { \
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if (atomic_read(¤t->lock_count)) { \
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BRICK_ERR("please do not nest spinlocks at line %d, reorganize your code.\n", __LINE__); \
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} \
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atomic_inc(¤t->lock_count); \
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(void)flags; \
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write_lock(spinlock); \
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} while (0)
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# define traced_writeunlock(spinlock,flags) \
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do { \
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/*spin_unlock_irqrestore(spinlock,flags);*/ \
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write_unlock(spinlock); \
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atomic_dec(¤t->lock_count); \
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} while (0)
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#else
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# define LOCK_CHECK(OP) 0
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#if 0
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# define traced_lock(spinlock,flags) spin_lock_irqsave(spinlock,flags)
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# define traced_unlock(spinlock,flags) spin_unlock_irqrestore(spinlock,flags)
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# define traced_readlock(spinlock,flags) read_lock_irqsave(spinlock,flags)
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# define traced_readunlock(spinlock,flags) read_unlock_irqrestore(spinlock,flags)
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# define traced_writelock(spinlock,flags) write_lock_irqsave(spinlock,flags)
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# define traced_writeunlock(spinlock,flags) write_unlock_irqrestore(spinlock,flags)
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#else
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# define traced_lock(spinlock,flags) do { (void)flags; spin_lock(spinlock); } while (0)
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# define traced_unlock(spinlock,flags) do { (void)flags; spin_unlock(spinlock); } while (0)
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# define traced_readlock(spinlock,flags) do { (void)flags; read_lock(spinlock); } while (0)
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# define traced_readunlock(spinlock,flags) do { (void)flags; read_unlock(spinlock); } while (0)
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# define traced_writelock(spinlock,flags) do { (void)flags; write_lock(spinlock); } while (0)
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# define traced_writeunlock(spinlock,flags) do { (void)flags; write_unlock(spinlock); } while (0)
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#endif
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#endif
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#endif
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