Babu Moger a12ee23493 arch/sparc: Introduce cmpxchg_u8 SPARC ... SPARC supports 32 bit and 64 bit cmpxchg right now. Add support for 8 bit (1 byte) cmpxchg. This is required to support queued rwlocks feature which uses 1 byte cmpxchg. The function __cmpxchg_u8 here uses the 4 byte cas instruction with a byte manipulation to achieve 1 byte cmpxchg. Signed-off-by: Babu Moger <babu.moger@oracle.com> Reviewed-by: Håkon Bugge <haakon.bugge@oracle.com> Reviewed-by: Steve Sistare <steven.sistare@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Reviewed-by: Jane Chu <jane.chu@oracle.com> Reviewed-by: Vijay Kumar <vijay.ac.kumar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-05-25 12:06:51 -07:00
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asm	arch/sparc: Introduce cmpxchg_u8 SPARC	2017-05-25 12:06:51 -07:00
uapi/asm	uapi: export all headers under uapi directories	2017-05-11 00:21:54 +09:00