Merge tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing updates from Steven Rostedt:
 "Major changes:

   - Changed location of tracing repo from personal git repo to:
     git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git

   - Added Masami Hiramatsu as co-maintainer

   - Updated MAINTAINERS file to separate out FTRACE as it is more than
     just TRACING.

  Minor changes:

   - Added Mark Rutland as FTRACE reviewer

   - Updated user_events to make it on its way to remove the BROKEN tag.
     The changes should now be acceptable but will run it through a
     cycle and hopefully we can remove the BROKEN tag next release.

   - Added filtering to eprobes

   - Added a delta time to the benchmark trace event

   - Have the histogram and filter callbacks called via a switch
     statement instead of indirect functions. This speeds it up to avoid
     retpolines.

   - Add a way to wake up ring buffer waiters waiting for the ring
     buffer to fill up to its watermark.

   - New ioctl() on the trace_pipe_raw file to wake up ring buffer
     waiters.

   - Wake up waiters when the ring buffer is disabled. A reader may
     block when the ring buffer is disabled, but if it was blocked when
     the ring buffer is disabled it should then wake up.

  Fixes:

   - Allow splice to read partially read ring buffer pages. This fixes
     splice never moving forward.

   - Fix inverted compare that made the "shortest" ring buffer wait
     queue actually the longest.

   - Fix a race in the ring buffer between resetting a page when a
     writer goes to another page, and the reader.

   - Fix ftrace accounting bug when function hooks are added at boot up
     before the weak functions are set to "disabled".

   - Fix bug that freed a user allocated snapshot buffer when enabling a
     tracer.

   - Fix possible recursive locks in osnoise tracer

   - Fix recursive locking direct functions

   - Other minor clean ups and fixes"

* tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (44 commits)
  ftrace: Create separate entry in MAINTAINERS for function hooks
  tracing: Update MAINTAINERS to reflect new tracing git repo
  tracing: Do not free snapshot if tracer is on cmdline
  ftrace: Still disable enabled records marked as disabled
  tracing/user_events: Move pages/locks into groups to prepare for namespaces
  tracing: Add Masami Hiramatsu as co-maintainer
  tracing: Remove unused variable 'dups'
  MAINTAINERS: add myself as a tracing reviewer
  ring-buffer: Fix race between reset page and reading page
  tracing/user_events: Update ABI documentation to align to bits vs bytes
  tracing/user_events: Use bits vs bytes for enabled status page data
  tracing/user_events: Use refcount instead of atomic for ref tracking
  tracing/user_events: Ensure user provided strings are safely formatted
  tracing/user_events: Use WRITE instead of READ for io vector import
  tracing/user_events: Use NULL for strstr checks
  tracing: Fix spelling mistake "preapre" -> "prepare"
  tracing: Wake up waiters when tracing is disabled
  tracing: Add ioctl() to force ring buffer waiters to wake up
  tracing: Wake up ring buffer waiters on closing of the file
  ring-buffer: Add ring_buffer_wake_waiters()
  ...

1 files changed, 18 insertions, 8 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 0dc4a769216b..bf933661fb36 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8433,6 +8433,19 @@ L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
 F:	drivers/platform/x86/fujitsu-tablet.c
 
+FUNCTION HOOKS (FTRACE)
+M:	Steven Rostedt <rostedt@goodmis.org>
+M:	Masami Hiramatsu <mhiramat@kernel.org>
+R:	Mark Rutland <mark.rutland@arm.com>
+S:	Maintained
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
+F:	Documentation/trace/ftrace*
+F:	kernel/trace/ftrace*
+F:	kernel/trace/fgraph.c
+F:	arch/*/*/*/*ftrace*
+F:	arch/*/*/*ftrace*
+F:	include/*/ftrace.h
+
 FUNGIBLE ETHERNET DRIVERS
 M:	Dimitris Michailidis <dmichail@fungible.com>
 L:	netdev@vger.kernel.org
@@ -11422,7 +11435,7 @@ M:	Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
 M:	"David S. Miller" <davem@davemloft.net>
 M:	Masami Hiramatsu <mhiramat@kernel.org>
 S:	Maintained
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
 F:	Documentation/trace/kprobes.rst
 F:	include/asm-generic/kprobes.h
 F:	include/linux/kprobes.h
@@ -20771,14 +20784,11 @@ F:	drivers/hwmon/pmbus/tps546d24.c
 
 TRACING
 M:	Steven Rostedt <rostedt@goodmis.org>
-M:	Ingo Molnar <mingo@redhat.com>
+M:	Masami Hiramatsu <mhiramat@kernel.org>
 S:	Maintained
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
-F:	Documentation/trace/ftrace.rst
-F:	arch/*/*/*/*ftrace*
-F:	arch/*/*/*ftrace*
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
+F:	Documentation/trace/*
 F:	fs/tracefs/
-F:	include/*/ftrace.h
 F:	include/linux/trace*.h
 F:	include/trace/
 F:	kernel/trace/
@@ -20787,7 +20797,7 @@ F:	tools/testing/selftests/ftrace/
 
 TRACING MMIO ACCESSES (MMIOTRACE)
 M:	Steven Rostedt <rostedt@goodmis.org>
-M:	Ingo Molnar <mingo@kernel.org>
+M:	Masami Hiramatsu <mhiramat@kernel.org>
 R:	Karol Herbst <karolherbst@gmail.com>
 R:	Pekka Paalanen <ppaalanen@gmail.com>
 L:	linux-kernel@vger.kernel.org