CVS commit: src/sys

["Mindaugas Rasiukevicius" <rmind%netbsd.org@localhost>]

Module Name:    src
Committed By:   rmind
Date:           Thu Feb 17 18:32:29 UTC 2011

Modified Files:
        src/sys/conf: files
        src/sys/sys: cpu_data.h lwp.h
Added Files:
        src/sys/kern: subr_pcu.c
        src/sys/sys: pcu.h

Log Message:
Add PCU (Per-CPU Unit) - an interface to manage synchronization of any
per CPU context tied with an LWP.  Main use - lazy FPU handling on SMP.

Requested by matt@, will be used on mips64.  Note: implementation will
be improved to use IPIs before adopting on x86.  OK ad@.


To generate a diff of this commit:
cvs rdiff -u -r1.998 -r1.999 src/sys/conf/files
cvs rdiff -u -r0 -r1.1 src/sys/kern/subr_pcu.c
cvs rdiff -u -r1.32 -r1.33 src/sys/sys/cpu_data.h
cvs rdiff -u -r1.142 -r1.143 src/sys/sys/lwp.h
cvs rdiff -u -r0 -r1.1 src/sys/sys/pcu.h

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