tree 53b795cb810b7430e46fe485d081bab675792ddb
parent c537aba00e3f1df8ce6c7c9fcb98b82c0c2d1d2c
parent 3ccb01239201af06a07482ec686b14cd148102a5
author Linus Torvalds <torvalds@linux-foundation.org> 1386347656 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1386347656 -0800
mergetag object 3ccb01239201af06a07482ec686b14cd148102a5
 type commit
 tag trace-fixes-3.13-rc2
 tagger Steven Rostedt <rostedt@rostedt.homelinux.com> 1386345787 -0500
 
 A regression showed up that there's a large delay when enabling
 all events. This was prevalent when FTRACE_SELFTEST was enabled which
 enables all events several times, and caused the system bootup to
 pause for over a minute.
 
 This was tracked down to an addition of a synchronize_sched() performed
 when system call tracepoints are unregistered.
 
 The synchronize_sched() is needed between the unregistering of the
 system call tracepoint and a deletion of a tracing instance buffer.
 But placing the synchronize_sched() in the unreg of *every* system call
 tracepoint is a bit overboard. A single synchronize_sched() before
 the deletion of the instance is sufficient.
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Merge tag 'trace-fixes-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "A regression showed up that there's a large delay when enabling all
  events.  This was prevalent when FTRACE_SELFTEST was enabled which
  enables all events several times, and caused the system bootup to
  pause for over a minute.

  This was tracked down to an addition of a synchronize_sched()
  performed when system call tracepoints are unregistered.

  The synchronize_sched() is needed between the unregistering of the
  system call tracepoint and a deletion of a tracing instance buffer.
  But placing the synchronize_sched() in the unreg of *every* system
  call tracepoint is a bit overboard.  A single synchronize_sched()
  before the deletion of the instance is sufficient"

* tag 'trace-fixes-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Only run synchronize_sched() at instance deletion time