Hi, Here is the 3rd version of series to improve the BTF support on probe events. The previous series is here: https://lore.kernel.org/all/168960739768.34107.15145201749042174448.stgit@devnote2/ The fixes patch in the previous version has been sent in different series. https://lore.kernel.org/all/169024903018.395371.1006584451160707296.stgit@devnote2/ In this version, I added BTF support on module symbols (this will be the biggest change) [1/9] and cleanup the btf APIs [2/9][3/9] according to the comment. Also [5/9] introduce a query_btf_context() for simplifying common fields in traceprobe_parse_context. [8/9] added more complex test case for structure field access. And [9/9] update the documentation about the mixture of '.' and '->'. This series can be applied on top of "probes/core" branch of https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git/ You can also get this series from: git://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git topic/fprobe-event-ext Thank you, --- Masami Hiramatsu (Google) (9): tracing/probes: Support BTF argument on module functions bpf/btf: tracing: Move finding func-proto API and getting func-param API to BTF bpf/btf: Add a function to search a member of a struct/union tracing/probes: Support BTF based data structure field access tracing/probes: Support BTF field access from $retval tracing/probes: Add string type check with BTF tracing/fprobe-event: Assume fprobe is a return event by $retval selftests/ftrace: Add BTF fields access testcases Documentation: tracing: Update fprobe event example with BTF field Documentation/trace/fprobetrace.rst | 64 ++- include/linux/btf.h | 8 kernel/bpf/btf.c | 84 +++ kernel/trace/trace_eprobe.c | 4 kernel/trace/trace_fprobe.c | 59 ++ kernel/trace/trace_kprobe.c | 1 kernel/trace/trace_probe.c | 487 +++++++++++++++----- kernel/trace/trace_probe.h | 27 + kernel/trace/trace_uprobe.c | 1 .../ftrace/test.d/dynevent/add_remove_btfarg.tc | 14 + .../ftrace/test.d/dynevent/fprobe_syntax_errors.tc | 6 11 files changed, 582 insertions(+), 173 deletions(-) -- Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
