Messages in this thread | | | Date | Wed, 28 Jun 2023 00:58:18 +0900 | From | Masami Hiramatsu (Google) <> | Subject | [GIT PULL] Probes update for v6.5 |
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Hi Linus,
Probes updates for v6.5:
- fprobe: Pass return address to the fprobe entry/exit callbacks so that the callbacks don't need to analyze pt_regs/stack to find the function return address.
- kprobe events: cleanup usage of TPARG_FL_FENTRY and TPARG_FL_RETURN flags so that those are not set at once.
- fprobe events: . Add a new fprobe events for tracing arbitrary function entry and exit as a trace event. . Add a new tracepoint events for tracing raw tracepoint as a trace event. This allows user to trace non user-exposed tracepoints. . Move eprobe's event parser code into probe event common file. . Introduce BTF (BPF type format) support to kernel probe (kprobe, fprobe and tracepoint probe) events so that user can specify traced function arguments by name. This also applies the type of argument when fetching the argument. . Introduce '$arg*' wildcard support if BTF is available. This expands the '$arg*' meta argument to all function argument automatically. . Check the return value types by BTF. If the function returns 'void', '$retval' is rejected. . Add some selftest script for fprobe events, tracepoint events and BTF support. . Update documentation about the fprobe events. . Some fixes for above features, document and selftests.
- selftests for ftrace (except for new fprobe events): . Add a test case for multiple consecutive probes in a function which checks if ftrace based kprobe, optimized kprobe and normal kprobe can be defined in the same target function. . Add a test case for optimized probe, which checks whether kprobe can be optimized or not.
Please pull the latest probes-v6.5 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git probes-v6.5
Tag SHA1: 08bb7e2de7f32619cd100419e719ef96d6cf0aab Head SHA1: 53431798f4bb60d214ae1ec4a79eefdd414f577b
Akanksha J N (2): selftests/ftrace: Add new test case which adds multiple consecutive probes in a function selftests/ftrace: Add new test case which checks for optimized probes
Masami Hiramatsu (Google) (15): fprobe: Pass return address to the handlers tracing/probes: Avoid setting TPARG_FL_FENTRY and TPARG_FL_RETURN tracing/probes: Add fprobe events for tracing function entry and exit. selftests/ftrace: Add fprobe related testcases tracing/probes: Add tracepoint support on fprobe_events tracing/probes: Move event parameter fetching code to common parser tracing/probes: Support function parameters if BTF is available tracing/probes: Add $arg* meta argument for all function args tracing/probes: Add BTF retval type support selftests/ftrace: Add tracepoint probe test case selftests/ftrace: Add BTF arguments test cases Documentation: tracing/probes: Add fprobe event tracing document tracing/probes: Fix to return NULL and keep using current argc Documentation: Fix typo of reference file name tracing/probes: Fix tracepoint event with $arg* to fetch correct argument
---- Documentation/trace/fprobetrace.rst | 188 +++ Documentation/trace/index.rst | 1 + Documentation/trace/kprobetrace.rst | 2 + include/linux/fprobe.h | 11 +- include/linux/rethook.h | 2 +- include/linux/trace_events.h | 3 + include/linux/tracepoint-defs.h | 1 + include/linux/tracepoint.h | 5 + kernel/kprobes.c | 1 + kernel/trace/Kconfig | 26 + kernel/trace/Makefile | 1 + kernel/trace/bpf_trace.c | 6 +- kernel/trace/fprobe.c | 17 +- kernel/trace/rethook.c | 3 +- kernel/trace/trace.c | 13 +- kernel/trace/trace.h Linus,
Probes updates for v6.5:
- fprobe: Pass return address to the fprobe entry/exit callbacks so that the callbacks don't need to analyze pt_regs/stack to find the function return address.
- kprobe events: cleanup usage of TPARG_FL_FENTRY and TPARG_FL_RETURN flags so that those are not set at once.
- fprobe events: . Add a new fprobe events for tracing arbitrary function entry and exit as a trace event. . Add a new tracepoint events for tracing raw tracepoint as a trace event. This allows user to trace non user-exposed tracepoints. . Move eprobe's event parser code into probe event common file. . Introduce BTF (BPF type format) support to kernel probe (kprobe, fprobe and tracepoint probe) events so that user can specify traced function arguments by name. This also applies the type of argument when fetching the argument. . Introduce '$arg*' wildcard support if BTF is available. This expands the '$arg*' meta argument to all function argument automatically. . Check the return value types by BTF. If the function returns 'void', '$retval' is rejected. . Add some selftest script for fprobe events, tracepoint events and BTF support. . Update documentation about the fprobe events. . Some fixes for above features, document and selftests.
- selftests for ftrace (except for new fprobe events): . Add a test case for multiple consecutive probes in a function which checks if ftrace based kprobe, optimized kprobe and normal kprobe can be defined in the same target function. . Add a test case for optimized probe, which checks whether kprobe can be optimized or not.
Please pull the latest probes-v6.5 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git probes-v6.5
Tag SHA1: 08bb7e2de7f32619cd100419e719ef96d6cf0aab Head SHA1: 53431798f4bb60d214ae1ec4a79eefdd414f577b
Akanksha J N (2): selftests/ftrace: Add new test case which adds multiple consecutive probes in a function selftests/ftrace: Add new test case which checks for optimized probes
Masami Hiramatsu (Google) (15): fprobe: Pass return address to the handlers tracing/probes: Avoid setting TPARG_FL_FENTRY and TPARG_FL_RETURN tracing/probes: Add fprobe events for tracing function entry and exit. selftests/ftrace: Add fprobe related testcases tracing/probes: Add tracepoint support on fprobe_events tracing/probes: Move event parameter fetching code to common parser tracing/probes: Support function parameters if BTF is available tracing/probes: Add $arg* meta argument for all function args tracing/probes: Add BTF retval type support selftests/ftrace: Add tracepoint probe test case selftests/ftrace: Add BTF arguments test cases Documentation: tracing/probes: Add fprobe event tracing document tracing/probes: Fix to return NULL and keep using current argc Documentation: Fix typo of reference file name tracing/probes: Fix tracepoint event with $arg* to fetch correct argument
---- Documentation/trace/fprobetrace.rst | 188 +++ Documentation/trace/index.rst | 1 + Documentation/trace/kprobetrace.rst | 2 + include/linux/fprobe.h | 11 +- include/linux/rethook.h | 2 +- include/linux/trace_events.h | 3 + include/linux/tracepoint-defs.h | 1 + include/linux/tracepoint.h | 5 + kernel/kprobes.c | 1 + kernel/trace/Kconfig | 26 + kernel/trace/Makefile | 1 + kernel/trace/bpf_trace.c | 6 +- kernel/trace/fprobe.c | 17 +- kernel/trace/rethook.c | 3 +- kernel/trace/trace.c | 13 +- kernel/trace/trace.h | 11 + kernel/trace/trace_eprobe.c | 44 +- kernel/trace/trace_fprobe.c | 1199 ++++++++++++++++++++ kernel/trace/trace_kprobe.c | 35 +- kernel/trace/trace_probe.c | 659 +++++++++-- kernel/trace/trace_probe.h | 49 +- kernel/trace/trace_uprobe.c | 8 +- lib/test_fprobe.c | 10 +- samples/fprobe/fprobe_example.c | 6 +- .../ftrace/test.d/dynevent/add_remove_btfarg.tc | 58 + .../ftrace/test.d/dynevent/add_remove_fprobe.tc | 26 + .../ftrace/test.d/dynevent/add_remove_tprobe.tc | 27 + .../ftrace/test.d/dynevent/fprobe_syntax_errors.tc | 111 ++ .../ftrace/test.d/dynevent/tprobe_syntax_errors.tc | 82 ++ .../ftrace/test.d/kprobe/kprobe_insn_boundary.tc | 19 + .../ftrace/test.d/kprobe/kprobe_opt_types.tc | 34 + .../ftrace/test.d/kprobe/kprobe_syntax_errors.tc | 16 +- 32 files changed, 2510 insertions(+), 164 deletions(-) create mode 100644 Documentation/trace/fprobetrace.rst create mode 100644 kernel/trace/trace_fprobe.c create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_insn_boundary.tc create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_opt_types.tc | 11 + kernel/trace/trace_eprobe.c | 44 +- kernel/trace/trace_fprobe.c | 1199 ++++++++++++++++++++ kernel/trace/trace_kprobe.c | 35 +- kernel/trace/trace_probe.c | 659 +++++++++-- kernel/trace/trace_probe.h | 49 +- kernel/trace/trace_uprobe.c | 8 +- lib/test_fprobe.c | 10 +- samples/fprobe/fprobe_example.c | 6 +- .../ftrace/test.d/dynevent/add_remove_btfarg.tc | 58 + .../ftrace/test.d/dynevent/add_remove_fprobe.tc | 26 + .../ftrace/test.d/dynevent/add_remove_tprobe.tc | 27 + .../ftrace/test.d/dynevent/fprobe_syntax_errors.tc | 111 ++ .../ftrace/test.d/dynevent/tprobe_syntax_errors.tc | 82 ++ .../ftrace/test.d/kprobe/kprobe_insn_boundary.tc | 19 + .../ftrace/test.d/kprobe/kprobe_opt_types.tc | 34 + .../ftrace/test.d/kprobe/kprobe_syntax_errors.tc | 16 +- 32 files changed, 2510 insertions(+), 164 deletions(-) create mode 100644 Documentation/trace/fprobetrace.rst create mode 100644 kernel/trace/trace_fprobe.c create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_insn_boundary.tc create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_opt_types.tc
-- Masami Hiramatsu (Google) <mhiramat@kernel.org>
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