commit ee89e80ba8c2a7ec5abadda658ca674775f61949
Author: Matthew Dillon <[email protected]>
Date: Tue Jul 26 12:56:31 2016 -0700
kernel - Reduce atomic ops in switch code
* Instead of using four atomic 'and' ops and four atomic 'or' ops, use
one atomic 'and' and one atomic 'or' when adjusting the pmap->pm_active.
* Store the array index and simplified cpu mask in the globaldata structure
for the above operation.
Summary of changes:
sys/kern/init_main.c | 2 ++
sys/kern/lwkt_thread.c | 1 +
sys/platform/pc64/x86_64/genassym.c | 4 ++++
sys/platform/pc64/x86_64/global.s | 4 ++++
sys/platform/pc64/x86_64/swtch.s | 36 ++++++++++++------------------------
sys/sys/globaldata.h | 4 +++-
6 files changed, 26 insertions(+), 25 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/ee89e80ba8c2a7ec5abadda658ca674775f61949
--
DragonFly BSD source repository
