CVS commit: src

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sun Feb 27 14:16:12 UTC 2022

Modified Files:
        src/external/cddl/osnet/dev/lockstat: lockstat.c
        src/sys/dev: lockstat.c lockstat.h

Log Message:
lockstat(4): Membar audit.

- Serialize updates to lockstat_enabled, lockstat_dev_enabled, and
  lockstat_dtrace_enabled with a new __cpu_simple_lock.

- Use xc_barrier to obviate any need for additional membars in
  lockstat_event.

- Use atomic_load/store_* for access that might not be serialized by
  lockstat_lock or lockstat_enabled_lock.


To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/external/cddl/osnet/dev/lockstat/lockstat.c
cvs rdiff -u -r1.27 -r1.28 src/sys/dev/lockstat.c
cvs rdiff -u -r1.14 -r1.15 src/sys/dev/lockstat.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.