[PATCH -tip v4] Enable optprobe on preepmtive kernel

[Masami Hiramatsu]

This patch enables optprobe even with CONFIG_PREEMPT. The
previous patch is  https://lkml.org/lkml/2017/9/19/159 .

Sorry for taking so long to update.
I've update the patch description according to Ingo's comment
but the code is same.

Thank you,

---

Masami Hiramatsu (1):
      kprobes: Use synchronize_rcu_tasks() for optprobe with CONFIG_PREEMPT


 arch/Kconfig     |    2 +-
 kernel/kprobes.c |   14 ++++++++------
 2 files changed, 9 insertions(+), 7 deletions(-)

--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>