[PATCH] ULI 2.6.12

From: Michael Raymond <mraymond_at_sgi.com>
Date: 2005-04-02 05:06:02
    Here's a patch of the ULI code to Tony's pre-2.6.12 tree.
Signed-off-by: Michael A Raymond <mraymond@sgi.com>

    I was able to show that ULIs cannot be scheduled onto other CPUs.  For
every IRQ that a user requests it registers a standard handler.  All IRQ
handlers are called out of do_IRQ().  It's not until do_IRQ() is called that
ia64_eoi() is called to complete the ACK and allow lower priority interrupts
into the system.
    I've added a simple stats program that makes use of ULIs to the support
package on the web site (1).  We've also found a case where their low
perturbation will be useful for user level profiling. I'll be writing that
up next.
(1) http://oss.sgi.com/projects/uli/
Michael A. Raymond              Office: (651) 683-3434
Core OS Group                   Real-Time System Software
To unsubscribe from this list: send the line "unsubscribe linux-ia64" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Received on Fri Apr 1 14:06:16 2005

This archive was generated by hypermail 2.1.8 : 2005-08-02 09:20:37 EST