tree e2fd7192232fa66fbed743b304a7b776d4140b93
parent 66552b894bd68dd6539fb6d656ad2c21bdd6acbe
author Peter Lieven <pl@kamp.de> 1417518350 +0100
committer Stefan Hajnoczi <stefanha@redhat.com> 1421156609 +0000

coroutine: try harder not to delete coroutines

Placing coroutines on the global pool should be preferrable, because it
can help all threads.  But if the global pool is full, we can still
try to save some allocations by stashing completed coroutines on the
local pool.  This is quite cheap too, because it does not require
atomic operations, and provides a gain of 15% in the best case.

Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1417518350-6167-8-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>