on 03/11/2010 19:04 m...@freebsd.org said the following: > On Wed, Nov 3, 2010 at 9:42 AM, Andriy Gapon <a...@icyb.net.ua> wrote: >> on 03/11/2010 18:27 m...@freebsd.org said the following: >>> It's not clear to me from the man pages (perhaps I didn't look at the >>> right one?) in which environments I need a spinlock. For example, I >>> wouldn't think it's safe to use a MTX_DEF in a hard interrupt handler >>> (i.e one that was registered with BUS_SETUP_INTR), but I see some code >>> lying around here that does it and nothing I'm aware of has broken. >> >> Such a handler runs in an interrupt thread. >> The "harder" interrupt handler is called interrupt filter in FreeBSD >> terminology. >> I think that it was formerly known as fast interrupt. > > So a MTX_DEF is okay in that environment?
Yes, I think so. > What would "best practices" be considered for what code should be run > in the interrupt handler versus a soft interrupt? Sorry for not going into details, but I personally think that there is no reason to use soft interrupts. If you can do everything in interrupt handler (i.e. on interrupt threads), then that should be all you need. -- Andriy Gapon _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
