Date: Wed, 29 Oct 2003 06:40:41 -0800 (PST) From: Bruce Evans <bde@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern kern_fork.c sched_4bsd.c sched_ule.c Message-ID: <200310291440.h9TEef06021690@repoman.freebsd.org>
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bde 2003/10/29 06:40:41 PST
FreeBSD src repository
Modified files:
sys/kern kern_fork.c sched_4bsd.c sched_ule.c
Log:
Removed sched_nest variable in sched_switch(). Context switches always
begin with sched_lock held but not recursed, so this variable was
always 0.
Removed fixup of sched_lock.mtx_recurse after context switches in
sched_switch(). Context switches always end with this variable in the
same state that it began in, so there is no need to fix it up. Only
sched_lock.mtx_lock really needs a fixup.
Replaced fixup of sched_lock.mtx_recurse in fork_exit() by an assertion
that sched_lock is owned and not recursed after it is fixed up. This
assertion much match the one in mi_switch(), and if sched_lock were
recursed then a non-null fixup of sched_lock.mtx_recurse would probably
be needed again, unlike in sched_switch(), since fork_exit() doesn't
return to its caller in the normal way.
Revision Changes Path
1.207 +1 -1 src/sys/kern/kern_fork.c
1.26 +0 -3 src/sys/kern/sched_4bsd.c
1.69 +0 -3 src/sys/kern/sched_ule.c
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