tree b980798b6990e504ed0e3accc6a95babae47bcbd
parent 17a2227d05b319a0c43580031ed03bad1096e82f
author Barret Rhoden <brho@cs.berkeley.edu> 1591718699 -0400
committer Barret Rhoden <brho@cs.berkeley.edu> 1591722641 -0400

tests/lock_test: fix affinity race

We were setting the affinity after starting the threads.  The test
starts when all threads hit the barrier.  If the threads hit the barrier
before we set their affinity, we'd interfere with the test.

The fix is to just have each thread set its own affinity before hitting
the barrier.

Note that Akaros doesn't actually use this.  Our os_prep_work made sure
we had enough vcores, so we're relying on 2LS-specific details: namely,
that threads will get picked up by idle vcores.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>