Edit File: traceio2.stp
#!/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,read} { if (dev == device_of_interest) printf ("%s(%d) %s 0x%x\n", execname(), pid(), ppfunc(), dev) }