Date: Wed, 30 Sep 2009 17:32:20 -0400 From: John Baldwin <jhb@freebsd.org> To: arch@freebsd.org Subject: Interrupt Descriptions Message-ID: <200909301732.20589.jhb@freebsd.org>
next in thread | raw e-mail | index | archive | help
A few folks have asked recently for the ability to add descriptive strings to registered interrupt handlers. This is especially true since the advent of MSI with multiple interrupts per device. I hacked up a prototype today that adds a new 'bus_describe_intr()' that takes the IRQ resource, the void * cookie returned by bus_setup_intr() and var args description and appends that to the interrupt name in the thread and vmstat -i info. The current patch only has the MI bits and the MD bits for amd64 as well as a sample change to the igb(4) driver. The patch is at http://www.FreeBSD.org/~jhb/patches/intr_describe.patch. An example from this patch is: > vmstat -i interrupt total rate irq1: atkbd0 8 0 irq4: uart0 751 5 irq6: fdc0 6 0 irq14: ata0 36 0 irq20: uhci0 20 0 irq23: uhci3 ehci0 2 0 irq28: mpt0 1661 11 irq256: igb0:tx 0 880 6 irq257: igb0:rx 0 1098 7 irq258: igb0:link 3 0 irq259: igb1:tx 0 1 0 irq260: igb1:rx 0 134 0 irq261: igb1:link 3 0 -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200909301732.20589.jhb>