* Question about Atomic operations
@ 2006-08-31 4:29 Devesh Sharma
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From: Devesh Sharma @ 2006-08-31 4:29 UTC (permalink / raw)
To: arjan, linux-kernel
Hello Arjan and list,
The documentation related to atomic operations says that the following
functions should be called in SMP safe maner
void atomic_add(int i, atomic_t *v);
void atomic_sub(int i, atomic_t *v);
void atomic_inc(atomic_t *v);
void atomic_dec(atomic_t *v);
since the implementation of these functions are prefixed with LOCK
prefix (On i386 arch.) which either asserts LOCK# signal or performs
cache locking which gauarentees coherency.
Then why these functions should be called in SMP safe manner?
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