| commit | e8e93b5f635438c7c3d3acff28563c51512686db | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Thu, 19 Oct 2017 02:01:49 +0000 (18 19:01 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Thu, 19 Oct 2017 02:12:20 +0000 (18 19:12 -0700) | ||
| tree | 22f36b81ff3bbc218210f962260a45308d7eaf6d | treesnapshot (tar.gz zip) |
| parent | bb1339f814acc2e25a2e638ad85318d0567418ba | commitdiff |
kernel - Refactor sysctl locking
* Get rid of the global topology lock. Instead of a pcpu shared lock
and change the XLOCK code (which is barely ever executed) to obtain
an exclusive lock on all cpus.
* Add CTLFLAG_NOLOCK, which disable the automatic per-OID sysctl lock.
Suggested-by: mjg (Mateusz Guzik)
* Get rid of the global topology lock. Instead of a pcpu shared lock
and change the XLOCK code (which is barely ever executed) to obtain
an exclusive lock on all cpus.
* Add CTLFLAG_NOLOCK, which disable the automatic per-OID sysctl lock.
Suggested-by: mjg (Mateusz Guzik)
| sys/kern/kern_sysctl.c | diffblobblamehistory | |
| sys/kern/lwkt_thread.c | diffblobblamehistory | |
| sys/sys/globaldata.h | diffblobblamehistory | |
| sys/sys/sysctl.h | diffblobblamehistory |