Re: [PATCH 07/16] kconfig-dynamic-frequency.diff

Kyle Moffett
2007-04-01T18:52:30Z

On Apr 01, 2007, at 14:42:59, Jan Engelhardt wrote:
> But I would have to ask: Why do we need 100/250/300/1000 if there
> is anyway an input field for the user to enter - s/he should read
> the help text for Known Good values, should not s/he?

Actually, probably what should be done is make the "HZ_CUSTOM" option
depend on EXPERIMENTAL/
EMBEDDED/"EXPERT"/"I_KNOW_WHAT_THE_HELL_IM_DOING" or some other
equivalent option, because a wrong choice for HZ has the potential to
really screw up a system. For example, 10000+ would make most
systems spend a significant portion of their time processing timer
interrupts and context switches, and less than 100 or so would make
the system seem jerky. The point is to encourage the average kernel
builder not to change from one of the default options unless they
really know what they're doing.

Cheers,
Kyle Moffett