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tile: replace some BUG_ON checks with BUILD_BUG_ON checks

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Some BUG_ON checks can be detected at compile time rather than
at runtime.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Akinobu Mita 2010-10-06 00:55:29 +09:00 committed by Chris Metcalf
parent 2bfc96a127
commit de5bbad677
1 changed files with 4 additions and 4 deletions
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8
arch/tile/lib/atomic_32.c
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@ -300,7 +300,7 @@ void __init __init_atomic_per_cpu(void)
#else /* ATOMIC_LOCKS_FOUND_VIA_TABLE() */
/* Validate power-of-two and "bigger than cpus" assumption */
BUG_ON(ATOMIC_HASH_SIZE & (ATOMIC_HASH_SIZE-1));
BUILD_BUG_ON(ATOMIC_HASH_SIZE & (ATOMIC_HASH_SIZE-1));
BUG_ON(ATOMIC_HASH_SIZE < nr_cpu_ids);
/*
@ -314,17 +314,17 @@ void __init __init_atomic_per_cpu(void)
BUG_ON((unsigned long)atomic_locks % PAGE_SIZE != 0);
/* The locks must all fit on one page. */
BUG_ON(ATOMIC_HASH_SIZE * sizeof(int) > PAGE_SIZE);
BUILD_BUG_ON(ATOMIC_HASH_SIZE * sizeof(int) > PAGE_SIZE);
/*
* We use the page offset of the atomic value's address as
* an index into atomic_locks, excluding the low 3 bits.
* That should not produce more indices than ATOMIC_HASH_SIZE.
*/
BUG_ON((PAGE_SIZE >> 3) > ATOMIC_HASH_SIZE);
BUILD_BUG_ON((PAGE_SIZE >> 3) > ATOMIC_HASH_SIZE);
#endif /* ATOMIC_LOCKS_FOUND_VIA_TABLE() */
/* The futex code makes this assumption, so we validate it here. */
BUG_ON(sizeof(atomic_t) != sizeof(int));
BUILD_BUG_ON(sizeof(atomic_t) != sizeof(int));
}