• Linus Torvalds's avatar
    Merge tag 'trace-4.1-tracefs' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 3f3c73de
    Linus Torvalds authored
    Pull tracefs from Steven Rostedt:
     "This adds the new tracefs file system.
      This has been in linux-next for more than one release, as I had it
      ready for the 4.0 merge window, but a last minute thing that needed to
      go into Linux first had to be done.  That was that perf hard coded the
      file system number when reading /sys/kernel/debugfs/tracing directory
      making sure that the path had the debugfs mount # before it would
      parse the tracing file.  This broke other use cases of perf, and the
      check is removed.
      Now when mounting /sys/kernel/debug, tracefs is automatically mounted
      in /sys/kernel/debug/tracing such that old tools will still see that
      path as expected.  But now system admins can mount tracefs directly
      and not need to mount debugfs, which can expose security issues.  A
      new directory is created when tracefs is configured such that system
      admins can now mount it separately (/sys/kernel/tracing)"
    * tag 'trace-4.1-tracefs' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
      tracing: Have mkdir and rmdir be part of tracefs
      tracefs: Add directory /sys/kernel/tracing
      tracing: Automatically mount tracefs on debugfs/tracing
      tracing: Convert the tracing facility over to use tracefs
      tracefs: Add new tracefs file system
      tracing: Create cmdline tracer options on tracing fs init
      tracing: Only create tracer options files if directory exists
      debugfs: Provide a file creation function that also takes an initial size
Makefile 4.14 KB