On Fri, May 10, 2019 at 03:34:34PM -0700, Douglas Anderson wrote: > If a controller specifies that it needs high priority for sending > messages we should always schedule our transfers on the thread. If we > don't do this we'll do the transfer in the caller's context which > might not be very high priority. If performance is important you probably also want to avoid the context thrashing - executing in the calling context is generally a substantial performance boost. I can see this causing problems further down the line when someone else turns up with a different requirement, perhaps in an application where the caller does actually have a raised priority themselves and just wanted to make sure that the thread wasn't lower than they are. I guess it'd be nice if we could check what priority the calling thread has and make a decision based on that but there don't seem to be any facilities for doing that which I can see right now.
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