[GIT PULL] uprobes: MMF_RECALC_UPROBES + single-step fixes

[Oleg Nesterov <oleg@redhat.com>]

Ingo, please pull from

  git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc uprobes/core

More recently dicussed and acked patches. Except 95cf00fa
"ptrace/x86: Partly fix set_task_blockstep()->update_debugctlmsr() logic",
nobody wants to ack it explicitly, but nobody objected.

Oleg Nesterov (9):
      uprobes: uprobes_treelock should not disable irqs
      uprobes: Introduce MMF_RECALC_UPROBES
      uprobes: Teach find_active_uprobe() to clear MMF_HAS_UPROBES
      ptrace/x86: Introduce set_task_blockstep() helper
      ptrace/x86: Partly fix set_task_blockstep()->update_debugctlmsr() logic
      uprobes/x86: Do not (ab)use TIF_SINGLESTEP/user_*_single_step() for single-stepping
      uprobes/x86: Xol should send SIGTRAP if X86_EFLAGS_TF was set
      uprobes/x86: Fix arch_uprobe_disable_step() && UTASK_SSTEP_TRAPPED interaction
      uprobes: Make arch_uprobe_task->saved_trap_nr "unsigned int"

Sebastian Andrzej Siewior (3):
      uprobes: Don't put NULL pointer in uprobe_register()
      uprobes: Introduce arch_uprobe_enable/disable_step()
      uprobes/x86: Implement x86 specific arch_uprobe_*_step

 arch/x86/include/asm/processor.h |    2 +
 arch/x86/include/asm/uprobes.h   |    3 +-
 arch/x86/kernel/step.c           |   53 +++++++++++++--------
 arch/x86/kernel/uprobes.c        |   52 +++++++++++++++++++-
 include/linux/sched.h            |    3 +-
 include/linux/uprobes.h          |    2 +
 kernel/events/uprobes.c          |   99 ++++++++++++++++++++++++++++++--------
 7 files changed, 171 insertions(+), 43 deletions(-)