#!/usr/bin/stap
global device_of_interest
probe begin {
/* The following is not the most efficient way to do this.
One could directly put the result of usrdev2kerndev()
into device_of_interest. However, want to test out
the other device functions */
dev = usrdev2kerndev($1)
device_of_interest = MKDEV(MAJOR(dev), MINOR(dev))
}
probe vfs.write, vfs.read
{
if (dev == device_of_interest)
printf ("%s(%d) %s 0x%x\n",
execname(), pid(), ppfunc(), dev)
}
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