Re: INTR_FAST
Ian Lepore <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.arm |
|---|---|
| Message-ID | <[email protected]> |
On Thu, 2020-08-27 at 19:20 +0530, Kamal R. Prasad wrote: > Hello, > > This page > https://www.freebsd.org/doc/en_US.ISO8859-1/books/arch-handbook/smp-design.html > > says that > "These interrupt handlers are currently misnamed “fast” interrupt handlers > since the INTR_FAST flag used in earlier versions of the kernel is used to > mark these handlers. The only interrupts which currently use these types of > interrupt handlers are clock interrupts and serial I/O device interrupts." > > I want to use INTR_FAST for my spi controller, but i find that it is not > defined on freebsd stable11. Is INTR_EXCL related in any way to INTR_FAST? > if not, how do I setup a fast interrupt handler? > > thanks > -kamal > An important question here is: Why do you want to use a filter handler (formerly called INTR_FAST) instead of a normal threaded handler? For something as slow as a SPI bus, I can't imagine you're going to see any noticible performance difference. -- Ian _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-arm To unsubscribe, send any mail to "[email protected]"