instrumentation/syscalls/README

   1 LTTng system call tracing
   2
   3 1) lttng-syscall-extractor
   4
   5 You need to build a kernel with CONFIG_FTRACE_SYSCALLS=y for extraction. Apply
   6 the linker patch to get your kernel to keep the system call metadata after boot.
   7 Then build and load the LTTng syscall extractor module. The module will fail to
   8 load (this is expected). See the dmesg output for system call metadata.
   9
  10 2) Generate system call TRACE_EVENT().
  11
  12 Take the dmesg metadata and feed it to lttng-syscalls-generate-headers.sh, e.g.,
  13 from the instrumentation/syscalls directory:
  14
  15 sh lttng-syscalls-generate-headers.sh 3.0.4 x86-64-syscalls-3.0.4
  16
  17 After these are created, we just need to follow the new system call additions,
  18 no need to regenerate the whole thing, since system calls are only appended to.