Messages in this thread | | | Date | Tue, 5 Nov 2002 17:35:55 +0000 (GMT) | From | will fitzgerald <> | Subject | important how to stop interrupts and start them again after finishing what you wanted to do?? |
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Hi all,
does any know how i can stop and start interrupts.
i have added a probe function to the kernel to measure network mechanisms times in cycles, called probe_point().
probe_point(int probeid){
get rdtsc time and put id and time into buffer when full use printk to write buffer to disk.
}
then in mechanisms of interest i place a call to the probe_point()for example,
vortex_interrupt(){
probe_point(10);// entry of function . .function stuff . .probe_point(11);// exit of function }
the problem is some times my buffer does not record some id's or times. i think this is because another interrupt took place and so the probe_point() exits before it gets a chance to store the id and time.
how do i go about setting an non interrupt in the probe_point function to make sure it finishes what its supposed to do?
for example:
probe_point(int probeid){
do not interrupt me until i do:
get rdtsc time and put id and time into buffer when full use printk to write buffer to disk.
now i have finshed puting an id and time into a buffer so you can interrpt now.
}
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