[PATCH v3 00/16] kprobes: Unify kretprobe trampoline handlers

[Masami Hiramatsu]

Hi,

Here is the 3rd version of the series to unify the kretprobe trampoline handler
implementation across all architectures which are currently kprobes supported.
Previous version is here;

 https://lkml.kernel.org/r/159852811819.707944.12798182250041968537.stgit@devnote2

This series removes the in_nmi() check from pre_kretprobe_handler() since we
can avoid double-lock deadlock from NMI by kprobe_busy_begin/end() and use
kfree_rcu() to release kretprobe_instance. Also, cleanup local functions to
static symbols.

Thank you,

---

Masami Hiramatsu (16):
      kprobes: Add generic kretprobe trampoline handler
      x86/kprobes: Use generic kretprobe trampoline handler
      arm: kprobes: Use generic kretprobe trampoline handler
      arm64: kprobes: Use generic kretprobe trampoline handler
      arc: kprobes: Use generic kretprobe trampoline handler
      csky: kprobes: Use generic kretprobe trampoline handler
      ia64: kprobes: Use generic kretprobe trampoline handler
      mips: kprobes: Use generic kretprobe trampoline handler
      parisc: kprobes: Use generic kretprobe trampoline handler
      powerpc: kprobes: Use generic kretprobe trampoline handler
      s390: kprobes: Use generic kretprobe trampoline handler
      sh: kprobes: Use generic kretprobe trampoline handler
      sparc: kprobes: Use generic kretprobe trampoline handler
      kprobes: Remove NMI context check
      kprobes: Free kretprobe_instance with rcu callback
      kprobes: Make local used functions static


 arch/arc/kernel/kprobes.c          |   55 +--------------
 arch/arm/probes/kprobes/core.c     |   79 +--------------------
 arch/arm64/kernel/probes/kprobes.c |   79 +--------------------
 arch/csky/kernel/probes/kprobes.c  |   78 +--------------------
 arch/ia64/kernel/kprobes.c         |   79 +--------------------
 arch/mips/kernel/kprobes.c         |   55 +--------------
 arch/parisc/kernel/kprobes.c       |   78 ++-------------------
 arch/powerpc/kernel/kprobes.c      |   55 +--------------
 arch/s390/kernel/kprobes.c         |   81 +--------------------
 arch/sh/kernel/kprobes.c           |   59 +---------------
 arch/sparc/kernel/kprobes.c        |   52 +-------------
 arch/x86/kernel/kprobes/core.c     |  109 +----------------------------
 include/linux/kprobes.h            |   51 ++++++++------
 kernel/kprobes.c                   |  136 +++++++++++++++++++++++++++++-------
 14 files changed, 190 insertions(+), 856 deletions(-)

--
Masami Hiramatsu (Linaro) <mhiramat@xxxxxxxxxx>