git: usched: Implement LWP lazy migration support.

[Sepherosa Ziehau]

commit 77df3a016c189a6620822ded30622ad88681de83
Author: Sepherosa Ziehau <sephe at dragonflybsd.org>
Date:   Wed Jan 11 21:25:57 2017 +0800

    usched: Implement LWP lazy migration support.
    
    Non-self migration can be achieved by just setting LWP's cpumask,
    which is almost costless.  The migration will happen upon next
    time the target LWP is scheduled.
    
    Reviewed-by: dillon@

Summary of changes:
 sys/kern/usched_bsd4.c | 12 +++++++++++-
 sys/kern/usched_dfly.c | 21 ++++++++++++++++++++-
 2 files changed, 31 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/77df3a016c189a6620822ded30622ad88681de83


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