This is the 2nd version of perf bpf: Probing with local variable, original discusions: https://lkml.org/lkml/2015/5/5/260.
Patches based on https://lkml.org/lkml/2015/5/17/84 (perf tools: introduce 'perf bpf' command to load eBPF programs). v1-v2: - Copy bpf byte-code related headers to tools/lib/bpf. - Combine pt_regs offset to arch_regs_table, and add calling_regs_table. - Support $params without debuginfo and use the same keyword for generating bpf prologue without debuginfo. - Save bpf prologue intermediate result to stack, so we can use the 4 regs(R2,R3,R4,R5) for variable passing according to bpf calling convention. - Move bpf prologue code to tools/lib/bpf. - Sample codes in patch instead of comments. - Fix code style problems mentioned by Alexei and Masami. Thanks. He Kuang (15): perf tools: Add lib/bpf to cscope target list perf bpf: Support custom vmlinux path perf bpf: Save pt_regs info from debuginfo perf tools: Add functions to get calling regs perf tools: Add pt_regs offsets and calling regs for x86 bpf tools: Add headers for generating bpf bytecode bpf tools: Convert arglist to bpf prologue bpf tools: Fetch calling regs to bpf arglist perf probe: Support $params without debuginfo perf bpf: Process debuginfo for generating bpf prologue perf bpf: Synthesize vars to generate bpf prologue perf bpf: Generate bpf prologue without debuginfo perf bpf: Combine bpf prologue and bpf prog samples/bpf: Add sample for testing bpf fetch args samples/bpf: Add sample for no-debuginfo case samples/bpf/Makefile | 2 + samples/bpf/sample_bpf_fetch_args.c | 62 +++++++ samples/bpf/sample_bpf_fetch_args_without_debug.c | 49 ++++++ tools/lib/bpf/Build | 2 +- tools/lib/bpf/bpf.h | 187 +++++++++++++++++++++ tools/lib/bpf/gen_prologue.c | 127 ++++++++++++++ tools/lib/bpf/libbpf.c | 27 +++ tools/lib/bpf/libbpf.h | 14 ++ tools/perf/Makefile.perf | 2 +- tools/perf/arch/x86/util/dwarf-regs.c | 100 ++++++++--- tools/perf/builtin-bpf.c | 3 + tools/perf/util/bpf-loader.c | 27 +++ tools/perf/util/include/dwarf-regs.h | 15 ++ tools/perf/util/probe-event.c | 121 ++++++++++++++ tools/perf/util/probe-event.h | 3 + tools/perf/util/probe-finder.c | 193 ++++++++++++++++++++++ tools/perf/util/probe-finder.h | 4 + 17 files changed, 915 insertions(+), 23 deletions(-) create mode 100644 samples/bpf/sample_bpf_fetch_args.c create mode 100644 samples/bpf/sample_bpf_fetch_args_without_debug.c create mode 100644 tools/lib/bpf/gen_prologue.c -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
