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

Masami Hiramatsu
2022-01-25T12:14:43Z

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@kernel.org>