Date: Fri, 1 Dec 2000 14:28:05 -0800 (PST) From: Andrew Gallatin <gallatin@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/isa isa.c Message-ID: <200012012228.eB1MS5H65779@freefall.freebsd.org>
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gallatin 2000/12/01 14:28:05 PST
Modified files:
sys/alpha/isa isa.c
Log:
Alter isa interrupt behaviour on alpha. Rather than send a non-specific
EOI after the ithread runs, send the EOI when we get the interrupt and
disable the source. After the ithread is run, the source is renabled.
Also, add isa_handle_fast_intr() which handles fast interrupts by sending
an EOI after the handler is run.
This fixes the chronic missing interrupt problems under heavy NFS load
on my UP1000 and should result in greater stability for alphas which
route all irqs through an isa pic.
Discussed with: jhb, bde (sending non-specific EOIs early was bde's idea)
Revision Changes Path
1.24 +39 -5 src/sys/alpha/isa/isa.c
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