[GIT PULL v5] hw-breakpoints: Rewrite on top of perf events v5

[Frederic Weisbecker <fweisbec@gmail.com>]

Ingo,

Please pull the tracing/hw-breakpoints branch that can be found at:

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
	tracing/hw-breakpoints

Changes in v5:

- Split-up the asm-generic/hw-breakpoint.h moving to
  linux/hw_breakpoint.h into a separate patch (Suggested by Prasad)
- Optimize the breakpoints restoring while switching from kvm guest
  to host. We only want to restore the state if we have active
  breakpoints to the host, otherwise we don't care about messed-up
  address registers (Suggested by Jan Kizka)
- Add asm/hw_breakpoint.h to Kbuild
- Fix bad breakpoint type in trace_selftest.c
- Fix unreleased non-pinned task-bound-only counters. We only released
  it in the first cpu. (Thanks to Paul Mackerras for reporting that)

Thanks,
	Frederic
---

Frederic Weisbecker (4):
      perf/core: Add a callback to perf events
      hw-breakpoint: Move asm-generic/hw_breakpoint.h to linux/hw_breakpoint.h
      hw-breakpoints: Rewrite the hw-breakpoints layer on top of perf events
      hw-breakpoints: Arbitrate access to pmu following registers constraints

Arjan van de Ven (1):
      perf/core: Provide a kernel-internal interface to get to performance counters

Li Zefan (1):
      ksym_tracer: Remove KSYM_SELFTEST_ENTRY

Paul Mundt (1):
      x86/hw-breakpoints: Actually flush thread breakpoints in flush_thread().


 arch/Kconfig                         |    3 +
 arch/x86/include/asm/Kbuild          |    1 +
 arch/x86/include/asm/debugreg.h      |   11 +-
 arch/x86/include/asm/hw_breakpoint.h |   58 +++--
 arch/x86/include/asm/processor.h     |   12 +-
 arch/x86/kernel/hw_breakpoint.c      |  391 ++++++++++++++--------
 arch/x86/kernel/process.c            |    9 +-
 arch/x86/kernel/process_32.c         |   26 +--
 arch/x86/kernel/process_64.c         |   26 +--
 arch/x86/kernel/ptrace.c             |  182 +++++++----
 arch/x86/kernel/smpboot.c            |    3 -
 arch/x86/kvm/x86.c                   |   18 +-
 arch/x86/power/cpu.c                 |    6 -
 include/asm-generic/hw_breakpoint.h  |  139 --------
 include/linux/hw_breakpoint.h        |  131 ++++++++
 include/linux/perf_event.h           |   37 ++-
 kernel/exit.c                        |    5 +
 kernel/hw_breakpoint.c               |  602 +++++++++++++++++++++-------------
 kernel/perf_event.c                  |  136 ++++++++-
 kernel/trace/trace.h                 |    1 -
 kernel/trace/trace_entries.h         |    6 +-
 kernel/trace/trace_ksym.c            |  126 ++++----
 kernel/trace/trace_selftest.c        |    4 +-
 23 files changed, 1194 insertions(+), 739 deletions(-)