Date: Thu, 20 Mar 2008 21:53:27 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/amd64/isa atpic.c src/sys/i386/isa atpic.c Message-ID: <200803202153.m2KLrRB1087901@repoman.freebsd.org>
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jhb 2008-03-20 21:53:27 UTC
FreeBSD src repository
Modified files:
sys/amd64/isa atpic.c
sys/i386/isa atpic.c
Log:
Explicitly use spinlock_enter/exit rather than locking the icu_lock spin
lock in the 8259A drivers as these drivers are only used on UP systems.
This slightly reduces the penalty of an SMP kernel (such as GENERIC) on
a UP x86 machine.
Revision Changes Path
1.24 +14 -15 src/sys/amd64/isa/atpic.c
1.30 +14 -15 src/sys/i386/isa/atpic.c
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