perf/core improvements and fixes:


  Song Liu:

  - Add support for annotating BPF programs, using the PERF_RECORD_BPF_EVENT
    and PERF_RECORD_KSYMBOL recently added to the kernel and plugging
    binutils's libopcodes disassembly of BPF programs with the existing
    annotation interfaces in 'perf annotate', 'perf report' and 'perf top'
    various output formats (--stdio, --stdio2, --tui).

perf list:

  Andi Kleen:

  - Filter metrics when using substring search.

perf record:

  Andi Kleen:

  - Allow to limit number of reported files

  - Clarify help for --switch-output.

perf report:

  Andi Kleen

  - Indicate JITed code better.

  - Show all sort keys in help output.

perf script:

  Andi Kleen:

  - Support relative time.

perf stat:

  Andi Kleen:

  - Improve scaling.


  Changbin Du:

  - Fix some mostly error path memory and reference count leaks found
    using gcc's ASan and UBSan.

Vendor events:

  Mamatha Inamdar:

  - Remove P8 HW events which are not supported.

Signed-off-by: Arnaldo Carvalho de Melo <>

perf bpf: Show more BPF program info in print_bpf_prog_info()

This patch enables showing bpf program name, address, and size in the

Before the patch:

  perf report --header-only
  # bpf_prog_info of id 9
  # bpf_prog_info of id 10
  # bpf_prog_info of id 13

After the patch:

  # bpf_prog_info 9: bpf_prog_7be49e3934a125ba addr 0xffffffffa0024947 size 229
  # bpf_prog_info 10: bpf_prog_2a142ef67aaad174 addr 0xffffffffa007c94d size 229
  # bpf_prog_info 13: bpf_prog_47368425825d7384_task__task_newt addr 0xffffffffa0251137 size 369

Committer notes:

Fix the fallback definition when HAVE_LIBBPF_SUPPORT is not defined,
i.e. add the missing 'static inline' and add the __maybe_unused to the
args. Also add stdio.h since we now use FILE * in bpf-event.h.

Signed-off-by: Song Liu <>
Tested-by: Arnaldo Carvalho de Melo <>
Cc: Alexei Starovoitov <>
Cc: Daniel Borkmann <>
Cc: Jiri Olsa <>
Cc: Namhyung Kim <>
Cc: Peter Zijlstra <>
Cc: Stanislav Fomichev <>
Signed-off-by: Arnaldo Carvalho de Melo <>
3 files changed