| commit | 07fc7b93ce343109afb181f86523db4468598fab | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 22 Feb 2017 07:55:09 +0000 (21 23:55 -0800) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 22 Feb 2017 18:50:21 +0000 (22 10:50 -0800) | ||
| tree | 75b84fc2327b02546a530810fd968f2db3f9b73f | treesnapshot (tar.gz zip) |
| parent | 01740954a98f4843efca6fb69b6260c846ff05a6 | commitdiff |
kernel - Slightly reduce extra spinlock ops in _pv_alloc()
* Pre-stage pnew (new pv_entry) using a pcpu cache, avoiding an
unnecessary spin_unlock/spin_lock sequence in _pv_alloc().
* No real performance improvement measured, but the code is cleaner so
use it.
* Pre-stage pnew (new pv_entry) using a pcpu cache, avoiding an
unnecessary spin_unlock/spin_lock sequence in _pv_alloc().
* No real performance improvement measured, but the code is cleaner so
use it.
| sys/platform/pc64/include/globaldata.h | diffblobblamehistory | |
| sys/platform/pc64/x86_64/pmap.c | diffblobblamehistory |