[PATCH RFC idle 2/3] arm: Avoid invoking RCU when CPU is idle
khilman at ti.com
Thu Feb 2 17:20:26 EST 2012
"Paul E. McKenney" <paulmck at linux.vnet.ibm.com> writes:
>> > The two options I see are:
>> > 1. Rip tracing out of the inner idle loops and everything that
>> > they invoke.
>> What I suggested above. But as I said I know sh*t about that tracing
>> implementation so that's an easy suggestion for me to make.
> Works for me as well. ;-)
While I must admit not having a better suggestion, I for one would vote
strongly against removing tracing from the idle path.
Being a PM developer and maintainer, much of the code I work on and
maintain happens to be run in the bowels of the idle path. Not having
the ability to trace this code would be a major step backwards IMO.
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