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Buat File | Buat Folder

Dir : ~/usr/share/systemtap/examples/io/

View File Name : 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)
}