On Friday 13 February 2009 9:22:05 am Patrick Lamaizière wrote: > Hello, > > I would like to know if it is safe to use the BUS_DMA_WAITOK flag with > bus_dmamem_alloc(), in the context of the device_attach routine? Many > drivers use BUS_DMA_NOWAIT.
Yes, it is ok to use in an attach routine. > I need a 32Ko buffer and on low memory my driver cannot attach > (bus_dmamem_alloc returns ENOMEM). Will BUS_DMA_WAITOK help in this > case? I'm not sure if it will really help, though. You might end up blocking forever (or a long time) until a 32k region is freed. -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
