Theodore Tso wrote:
Removing the timer-based "ping" might be a good thing to do from the
point of view of reducing power utilization of laptops (but hey, I
don't have a tg3 in my laptop, so I won't worry about it a whole lot :-),
but I agree that in general the RT patches need to be able to
call functions such as tg3_timer() reliably even when under a high
real-time process workload, without needing to use the blunt hammer of
"chrt -f 95 `pidof softirq-timer`". (Since not all timer callbacks
need to be run at rt prio 95.)
I suppose the timer subsystem needs a "I'd like to have this timer called at
time X, but it's ok to call it
later until time X+Y" option; that's useful for RT like stuff but also for
power savings...
(eg you can batch timer firings that way a lot better)
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