Messages in this thread | | | From | Song Liu <> | Subject | [PATCH v3 0/2] Introduce perf-stat -b for BPF programs | Date | Tue, 8 Dec 2020 10:16:44 -0800 |
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This set introduces perf-stat -b option to count events for BPF programs. This is similar to bpftool-prog-profile. But perf-stat makes it much more flexible.
Changes v2 => v3: 1. Small fixes in Makefile.perf and bpf_counter.c (Jiri) 2. Rebased on top of bpf-next. This is because 1/2 conflicts with some patches in bpftool/Makefile.
Changes PATCH v1 => PATCH v2: 1. Various fixes in Makefiles. (Jiri) 2. Fix an build warning/error with gcc-10. (Jiri)
Changes RFC v2 => PATCH v1: 1. Support counting on multiple BPF programs. 2. Add BPF handling to target__validate(). 3. Improve Makefile. (Jiri)
Changes RFC v1 => RFC v2: 1. Use bootstrap version of bpftool. (Jiri) 2. Set default to not building bpf skeletons. (Jiri) 3. Remove util/bpf_skel/Makefile, keep all the logic in Makefile.perf. (Jiri) 4. Remove dependency to vmlinux.h in the two skeletons. The goal here is to enable building perf without building kernel (vmlinux) first. Note: I also removed the logic that build vmlinux.h. We can add that back when we have to use it (to access big kernel structures).
Song Liu (2): perf: support build BPF skeletons with perf perf-stat: enable counting events for BPF programs
tools/bpf/bpftool/Makefile | 3 + tools/build/Makefile.feature | 4 +- tools/perf/Makefile.config | 9 + tools/perf/Makefile.perf | 48 ++- tools/perf/builtin-stat.c | 77 ++++- tools/perf/util/Build | 1 + tools/perf/util/bpf_counter.c | 297 ++++++++++++++++++ tools/perf/util/bpf_counter.h | 73 +++++ tools/perf/util/bpf_skel/.gitignore | 3 + .../util/bpf_skel/bpf_prog_profiler.bpf.c | 93 ++++++ tools/perf/util/evsel.c | 11 + tools/perf/util/evsel.h | 6 + tools/perf/util/stat-display.c | 4 +- tools/perf/util/target.c | 34 +- tools/perf/util/target.h | 10 + tools/scripts/Makefile.include | 1 + 16 files changed, 655 insertions(+), 19 deletions(-) create mode 100644 tools/perf/util/bpf_counter.c create mode 100644 tools/perf/util/bpf_counter.h create mode 100644 tools/perf/util/bpf_skel/.gitignore create mode 100644 tools/perf/util/bpf_skel/bpf_prog_profiler.bpf.c
-- 2.24.1
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