Jakub Kicinski 9a90c83c09 nfp: bpf: optimize the RMW for stack accesses ... When we are performing unaligned stack accesses in the 32-64B window we have to do a read-modify-write cycle. E.g. for reading 8 bytes from address 17: 0: tmp = stack[16] 1: gprLo = tmp >> 8 2: tmp = stack[20] 3: gprLo |= tmp << 24 4: tmp = stack[20] 5: gprHi = tmp >> 8 6: tmp = stack[24] 7: gprHi |= tmp << 24 The load on line 4 is unnecessary, because tmp already contains data from stack[20]. For write we can optimize both loads and writebacks away. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-10-24 17:38:37 +09:00
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nfp	nfp: bpf: optimize the RMW for stack accesses	2017-10-24 17:38:37 +09:00
Kconfig	nfp: build the flower offload by default	2017-09-03 21:22:05 -07:00
Makefile	nfp: rename the driver and add new main file	2017-02-10 15:52:24 -05:00