tree e50e20f212bae961e9a4781a9fba860a817632a0
parent 853aa53890e39a6955551d533b284583906811e5
author Jason Evans <jasone@canonware.com> 1432082836 -0700
committer Christopher Ferris <cferris@google.com> 1432316907 -0700

Impose a minimum tcache count for small size classes.

Now that small allocation runs have fewer regions due to run metadata
residing in chunk headers, an explicit minimum tcache count is needed to
make sure that tcache adequately amortizes synchronization overhead.

Bug: 21326736
(cherry picked from commit 83d543f8689bc7c6142179a5491bdf2a31b5cfc7)

Change-Id: I4178902b63ed310100019fee0805a11839de740f