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RDS: Implement masked atomic operations

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Add two CMSGs for masked versions of cswp and fadd. args
struct modified to use a union for different atomic op type's
arguments. Change IB to do masked atomic ops. Atomic op type
in rds_message similarly unionized.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
This commit is contained in:
Andy Grover 2010-08-25 05:51:28 -07:00
parent 59f740a6ae
commit 20c72bd5f5
5 changed files with 64 additions and 13 deletions
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12
include/linux/rds.h
View file

@ -75,6 +75,8 @@
#define RDS_CMSG_CONG_UPDATE 5
#define RDS_CMSG_ATOMIC_FADD 6
#define RDS_CMSG_ATOMIC_CSWP 7
#define RDS_CMSG_MASKED_ATOMIC_FADD 8
#define RDS_CMSG_MASKED_ATOMIC_CSWP 9
#define RDS_INFO_FIRST 10000
#define RDS_INFO_COUNTERS 10000
@ -251,6 +253,16 @@ struct rds_atomic_args {
struct {
uint64_t add;
} fadd;
struct {
uint64_t compare;
uint64_t swap;
uint64_t compare_mask;
uint64_t swap_mask;
} m_cswp;
struct {
uint64_t add;
uint64_t nocarry_mask;
} m_fadd;
};
uint64_t flags;
uint64_t user_token;