#ifndef _ASM_GENERIC_BITOPS_LOCK_H_ #define _ASM_GENERIC_BITOPS_LOCK_H_ /** * test_and_set_bit_lock - Set a bit and return its old value, for lock * @nr: Bit to set * @addr: Address to count from * * This operation is atomic and provides acquire barrier semantics. * It can be used to implement bit locks. */ #define test_and_set_bit_lock(nr, addr) test_and_set_bit(nr, addr) /** * clear_bit_unlock - Clear a bit in memory, for unlock * @nr: the bit to set * @addr: the address to start counting from * * This operation is atomic and provides release barrier semantics. */ #define clear_bit_unlock(nr, addr) \ do { \ smp_mb__before_atomic(); \ clear_bit(nr, addr); \ } while (0) /** * __clear_bit_unlock - Clear a bit in memory, for unlock * @nr: the bit to set * @addr: the address to start counting from * * A weaker form of clear_bit_unlock() as used by __bit_lock_unlock(). If all * the bits in the word are protected by this lock some archs can use weaker * ops to safely unlock. * * See for example x86's implementation. */ #define __clear_bit_unlock(nr, addr) \ do { \ smp_mb__before_atomic(); \ clear_bit(nr, addr); \ } while (0) #endif /* _ASM_GENERIC_BITOPS_LOCK_H_ */ option> net-next plumbingsTobias Klauser
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authorDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500
committerDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500
commit3efa70d78f218e4c9276b0bac0545e5184c1c47b (patch)
treef4abe2f05e173023d2a262afd4aebb1e89fe6985 /include/Kbuild
parent76e0e70e6452b971a69cc9794ff4a6715c11f7f2 (diff)
parent926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The conflict was an interaction between a bug fix in the netvsc driver in 'net' and an optimization of the RX path in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/Kbuild')