[linuxsh-dev] calibrate delay loop & jiffies

[Studencki P. <Paw...@er...>]

Hi,

could someone explain a problem with jiffies? Where are they counted on?
I've seen some code in arch/sh/kernel/time.c about this, but no jiffies
variable exactly. I compared files time.c from kernel 2.4.0 with older
2.3.99 and there some modifications in new kernels, so these could be a
reason of problems with jiffies, do they depend on platform?

The problem with printf has been solved...ok...perhaps not solved, but I
found a reason:
in driver/char/n_tty.c, function write_chan calls schedule(), after that the
programm stops, it means: I don't see printf outputs any more. 
I hope, if I repare jiffies stuff, I'll also get working schedule() in
write_chan.

Perhaps has someone faced same problem? Or has any idea about jiffies?

regards
Pawel