On 4/11/06, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> wrote:
Sorry for the late reply. I have tried to test your user space test
program and the kernel module inside my Qemu virtual machine. And the
result is...there is no delay inside the user space test program. The
loop is still counting while the kernel module is correctly busy
waiting for 10 seconds (10*HZ).
I have a question here. Please CMIIW.
The user space prog. is given SCHED_FIFO priority, which means it dosent have timesliced-scheduling and runs till it volutarily yields the CPU . Since it has an infinite loop shouldnt it be scheduled forever. So how will the kernel module get to exit ?( i.e., when will the time_before() check gets executed) ?
rgds
Arun
The user space prog. is given SCHED_FIFO priority, which means it dosent have timesliced-scheduling and runs till it volutarily yields the CPU . Since it has an infinite loop shouldnt it be scheduled forever. So how will the kernel module get to exit ?( i.e., when will the time_before() check gets executed) ?
rgds
Arun
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