[for-next][PATCH 00/18] ftrace/rcu: Handle unsafe RCU functions and ftrace callbacks

[Steven Rostedt]

This is the latest patches to be queued for 3.12.

A little late, but as Dave Jones has been stumbling over this for a
while, I thought it would be good to get it in now. It's not that
complex to resolve any issues that may pop up.

I'll keep it in linux-next for a while to make sure it really is clean.

Note, the checker will stumble over a few functions in irq and scheduler
code if enabled. This is because those patches have not received Acks
from Thomas Gleixner and Peter Zijlstra. When I get those acks, I'll
add the changes to silent those too.

Thanks to Paul McKenney for reviewing the patches.

Enjoy,

-- Steve

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
for-next

Head SHA1: 7fb3a66134ed5a40448131cf4195823d22f70aa3


Alexander Z Lam (1)
      tracing: Make tracing_cpumask available for all instances

Steven Rostedt (Red Hat) (17)
      ftrace: Fix a slight race in modifying what function callback gets traced
      ftrace/rcu: Do not trace debug_lockdep_rcu_enabled()
      ftrace: Add hash list to save RCU unsafe functions
      ftrace: Do not set ftrace records for unsafe RCU when not allowed
      ftrace: Set ftrace internal function tracing RCU safe
      ftrace: Add test for ops against unsafe RCU functions in callback
      ftrace: Do not display non safe RCU functions in available_filter_functions
      ftrace: Add rcu_unsafe_filter_functions file
      ftrace: Add selftest to check if RCU unsafe functions are filtered properly
      ftrace: Create a RCU unsafe checker
      ftrace: Add infrastructure to stop RCU unsafe checker from checking
      ftrace: Disable RCU unsafe checker when function graph is enabled
      ftrace: Disable the RCU unsafe checker when irqsoff is enabled
      ftrace/lockdep: Have the RCU lockdep splat show what function triggered
      ftrace/rcu: Mark functions that are RCU unsafe
      ftrace/cpuidle/x86: Mark functions that are RCU unsafe
      ftrace: Print a message when the rcu checker is disabled

----
 b/arch/x86/kernel/process.c             |    2 
 b/drivers/cpuidle/cpuidle.c             |    2 
 b/include/asm-generic/vmlinux.lds.h     |   10 +
 b/include/linux/ftrace.h                |   38 +++++
 b/kernel/cpu/idle.c                     |    2 
 b/kernel/lockdep.c                      |    2 
 b/kernel/rcupdate.c                     |    2 
 b/kernel/rcutiny.c                      |    1 
 b/kernel/rcutree.c                      |    7 +
 b/kernel/trace/Kconfig                  |   22 +++
 b/kernel/trace/ftrace.c                 |   17 ++
 b/kernel/trace/trace.c                  |   37 ++---
 b/kernel/trace/trace.h                  |    1 
 b/kernel/trace/trace_functions.c        |   48 ++++++-
 b/kernel/trace/trace_irqsoff.c          |   16 ++
 b/kernel/trace/trace_selftest.c         |   94 +++++++++++++
 b/kernel/trace/trace_selftest_dynamic.c |    7 +
 include/linux/ftrace.h                  |    8 +
 kernel/trace/ftrace.c                   |  218 +++++++++++++++++++++++++++++---
 kernel/trace/trace.h                    |   17 ++
 kernel/trace/trace_functions.c          |   40 +++++
 21 files changed, 551 insertions(+), 40 deletions(-)
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