Problems in syscall.stp and syscall2.stp

[Wenji Huang]

Hi,
   
    Found there are two problems in syscall.stp and syscall2.stp.
   
    1. probe point related to kernel config, such as sys_quotactl, valid 
in CONFIG_QUOTA=y.
      Moreover some test scripts dependent on kernel config.
      Currently, no statement to handle that.

      ***Suggestion: add config read functions.
                %(kernel_config(CONFIG_QUOTA)=="y" %?)
                  xxxxxxx
                %)
  
        But should enable Kernel .config support and get the detailed 
config information from file /proc/config.gz.

    2. probe point related to architecture, such as compat_do_execve and 
compat_sys_semtimedop are functions for providing 32 bit
compatibility code in 64 bit systems. So, they exist in x86_64, s390x, etc.
       I tried to defined them using condition statement:
          %(arch == "x86_64" || arch == "s390x" %?
            probe syscall.compat_do_execve = 
kernel.functions("compat_do_execve")

      But report syntax error, seems this kind of writing not supported. 
Also, Is there list for architectures classified by 32/64 systems?

     ***One suggested solution is to move these probes into 
corresponding directories. of course keep same copy.
     
Regards,
Wenji