Messages in this thread | | | Date | Fri, 28 Jul 2000 07:27:04 +0200 | From | "Andi Kleen" <> | Subject | Re: sysconf (was Re: RLIM_INFINITY inconsistency between archs) |
| |
On Thu, Jul 27, 2000 at 05:34:54PM -0700, H. Peter Anvin wrote: > I don't think we want to do this! IMO, HZ should not get exported to > user space *AT ALL*. Instead, for the few interfaces that need it, > we'll export a "user space HZ" (USER_HZ) which is fixed. No need for > a kernel hack. When we support nonstandard values for HZ, we need to > fix the few interfaces that actually export jiffies values to convert > from "user jiffies" to real jiffies.
I think the point is less HZ as unit (it shouldn't be a user visible one), but some programs want to know the timer tick to adapt themselves to it; e.g. to calibrate their timers. Of course it is only an approximation because timer events can always be late in a multitasking environment, but it usually should work out.
-Andi
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |