#! /usr/bin/env stap

global swap_result
probe kernel.function("swap_read_folio")!, kernel.function("swap_readpage") {
  swap_result[tz_ctime(gettimeofday_s()),ppfunc(),execname(),pid()] <<< 1
}
probe kernel.function("swap_write_folio")!, kernel.function("swap_writepage") {
  swap_result[tz_ctime(gettimeofday_s()),ppfunc(),execname(),pid()] <<< 1
}

probe begin {
  printf("%-30s %-15s %-25s %-10s %-10s \n","TIME","FUNC","COMM","PID", "COUNT")
}

probe timer.s(10) {
  foreach ([t+,f,n,p] in swap_result) {
    printf("%-30s %-15s %-25s %-10d %-10d \n",t,f,n,p,@count(swap_result[t,f,n,p]))
  }
  delete(swap_result)
}