kvm_trace.sh

#!/usr/bin/python
import os
import sys

KVM_TRACE_PATH="/sys/kernel/debug/tracing/events/kvm"
cmd=["Quit", "KVM All"]

def show_traces():
        i = 1
        print "----------------------------------"
        print '{:02}'.format(1)+".[-] "+cmd[i]
        i +=1
        for dirname in os.walk(KVM_TRACE_PATH).next()[1]:
                f = open(KVM_TRACE_PATH+"/"+dirname+"/enable", "r")
                text = f.read()
                f.close()
                text = text.rstrip('\r\n')
                cmd.append(dirname)
                print '{:02}'.format(i)+".["+text+"] "+dirname
                i += 1
        print "----------------------------------"

while 1:
        show_traces()
        trace_num = input("Enter trace number: [0 to quit] ")
        if trace_num == 0:
                sys.exit(1)
        val = input("Set " + cmd[trace_num] + " to 0 or 1? ")
        if trace_num == 1:
                os.system("echo "+str(val)+" > " + KVM_TRACE_PATH+"/enable")
        else:
                os.system("echo "+str(val)+" > " + KVM_TRACE_PATH+"/"+cmd[trace_num]+"/enable")