Hi, I need information on how to extract system call ids from a kernel level trace by using TMF. For example, a sample code to iterate through a kernel trace in CTF format is given below.
In this code, I am able to extract the system call name and its return value. However, from the *event.getContent()* function, I could not get the system call id for the corresponding system call name. Kindly let me know, how to extract the system call id? By system call id I mean the actual system call id assigned by Linux to a system call as shown on this site: http://syscalls.kernelgrok.com/ ///////////////////////////////////////////////Code ////////////////////////////////////// public void readTrace(){ CtfIterator traceIterator=trace.createIterator(); while (traceIterator.advance()){ CtfTmfEvent event = traceIterator.getCurrentEvent(); ITmfEventField content = event.getContent(); String eventName=event.getEventName(); ITmfEventField sys_exit=content.getField("ret"); if (sys_exit != null) System.out.println("Ret: "+sys_exit.getValue()); if (eventName.startsWith(LttngStrings.SYSCALL_PREFIX) || eventName.startsWith(LttngStrings.COMPAT_SYSCALL_PREFIX)) { System.out.println(eventName); } } } ///////////////////////////////////////////////Code ////////////////////////////////////// Regards, Shariyar
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