Date: Wed, 5 Apr 2006 20:43:19 +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/amd64 io_apic.c src/sys/i386/i386 io_apic.c Message-ID: <200604052043.k35KhJr0010606@repoman.freebsd.org>
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jhb 2006-04-05 20:43:19 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 io_apic.c
sys/i386/i386 io_apic.c
Log:
Cache the value of the lower half of each I/O APIC redirection table entry
so that we only have to do an ioapic_write() instead of an ioapic_read()
followed by an ioapic_write() every time we mask and unmask level triggered
interrupts. This cuts the execution time for these operations roughly in
half.
Profiled by: Paolo Pisati <p.pisati@oltrelinux.com>
MFC after: 1 week
Revision Changes Path
1.24 +4 -6 src/sys/amd64/amd64/io_apic.c
1.28 +4 -6 src/sys/i386/i386/io_apic.c
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