_test_and_clear_bit  157 arch/arm/include/asm/bitops.h extern int _test_and_clear_bit(int nr, volatile unsigned long * p);
_test_and_clear_bit   21 arch/arm/include/asm/sync_bitops.h #define sync_test_and_clear_bit(nr, p)	_test_and_clear_bit(nr, p)
_test_and_clear_bit  151 arch/arm/kernel/armksyms.c EXPORT_SYMBOL(_test_and_clear_bit);