linux-kernel - [PATCH v5 0/9] fprobe: Introduce fprobe function entry/exit probe

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Date:   Tue, 25 Jan 2022 21:11:34 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Jiri Olsa <jolsa@...hat.com>, Alexei Starovoitov <ast@...nel.org>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        "Naveen N . Rao" <naveen.n.rao@...ux.ibm.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
        "David S . Miller" <davem@...emloft.net>
Subject: [PATCH v5 0/9] fprobe: Introduce fprobe function entry/exit probe 

Hi,

Here is the 5th version of fprobe. This version fixed some build
issues on fprobe and rethook (thanks for kernel test bot to give
a hint!). The previous version is here[1];

[1] https://lore.kernel.org/all/164304056155.1680787.14081905648619647218.stgit@devnote2/

This series introduces the fprobe, the function entry/exit probe
with multiple probe point support. This also introduces the rethook
for hooking function return as same as kretprobe does. This
abstraction will help us to generalize the fgraph tracer,
because we can just switch it from rethook in fprobe, depending
on the kernel configuration.

The patch [1/9] is from Jiri's series[2].

[2] https://lore.kernel.org/all/20220104080943.113249-1-jolsa@kernel.org/T/#u


Thank you,

---

Jiri Olsa (1):
      ftrace: Add ftrace_set_filter_ips function

Masami Hiramatsu (8):
      fprobe: Add ftrace based probe APIs
      rethook: Add a generic return hook
      rethook: x86: Add rethook x86 implementation
      ARM: rethook: Add rethook arm implementation
      arm64: rethook: Add arm64 rethook implementation
      fprobe: Add exit_handler support
      fprobe: Add sample program for fprobe
      docs: fprobe: Add fprobe description to ftrace-use.rst


 Documentation/trace/fprobe.rst                |  131 +++++++++++
 Documentation/trace/index.rst                 |    1 
 arch/arm/Kconfig                              |    1 
 arch/arm/include/asm/stacktrace.h             |    4 
 arch/arm/kernel/stacktrace.c                  |    6 
 arch/arm/probes/Makefile                      |    1 
 arch/arm/probes/rethook.c                     |   71 ++++++
 arch/arm64/Kconfig                            |    1 
 arch/arm64/include/asm/stacktrace.h           |    2 
 arch/arm64/kernel/probes/Makefile             |    1 
 arch/arm64/kernel/probes/rethook.c            |   25 ++
 arch/arm64/kernel/probes/rethook_trampoline.S |   87 +++++++
 arch/arm64/kernel/stacktrace.c                |    7 -
 arch/x86/Kconfig                              |    1 
 arch/x86/include/asm/unwind.h                 |    8 +
 arch/x86/kernel/Makefile                      |    1 
 arch/x86/kernel/kprobes/common.h              |    1 
 arch/x86/kernel/rethook.c                     |  115 +++++++++
 include/linux/fprobe.h                        |   86 +++++++
 include/linux/ftrace.h                        |    3 
 include/linux/rethook.h                       |   99 ++++++++
 include/linux/sched.h                         |    3 
 kernel/exit.c                                 |    2 
 kernel/fork.c                                 |    3 
 kernel/trace/Kconfig                          |   25 ++
 kernel/trace/Makefile                         |    2 
 kernel/trace/fprobe.c                         |  198 ++++++++++++++++
 kernel/trace/ftrace.c                         |   53 ++++
 kernel/trace/rethook.c                        |  311 +++++++++++++++++++++++++
 samples/Kconfig                               |    7 +
 samples/Makefile                              |    1 
 samples/fprobe/Makefile                       |    3 
 samples/fprobe/fprobe_example.c               |  103 ++++++++
 33 files changed, 1349 insertions(+), 14 deletions(-)
 create mode 100644 Documentation/trace/fprobe.rst
 create mode 100644 arch/arm/probes/rethook.c
 create mode 100644 arch/arm64/kernel/probes/rethook.c
 create mode 100644 arch/arm64/kernel/probes/rethook_trampoline.S
 create mode 100644 arch/x86/kernel/rethook.c
 create mode 100644 include/linux/fprobe.h
 create mode 100644 include/linux/rethook.h
 create mode 100644 kernel/trace/fprobe.c
 create mode 100644 kernel/trace/rethook.c
 create mode 100644 samples/fprobe/Makefile
 create mode 100644 samples/fprobe/fprobe_example.c

--
Masami Hiramatsu (Linaro) <mhiramat@...nel.org>