On 5/12/2014 2:11 AM, Rolf Eike Beer wrote:
Am Sonntag, 11. Mai 2014, 18:40:50 schrieb John David Anglin:
The attached change significantly improves the performance of the LWS-
CAS code in syscall.S.
This allows a number of packages to build (e.g., zeromq3, gtest and
libxs) that previously failed because
slow LWS-CAS performance under contention. In particular, interrupts
taken while the lock was taken
degraded performance significantly.
Sounds cool ;)
The label cas_wouldblock would now only be defined in SMP case, which looks
odd. Since I can't find any references to it I think it should just be dropped.
I was aware when I sent the change that the label cas_wouldblock is not
used. Possibly, it should
change to a comment but maybe that's a separate cleanup.
Dave
--
John David Anglin dave.anglin@xxxxxxxx
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