[PATCH -next 0/2] perf stat: Support inherit events for bperf

[Tengda Wu]

Hi,

bperf (perf-stat --bpf-counter) has not supported inherit events
during fork() since it was first introduced.

This patch series tries to add this support by:
 1) adding two new bpf programs to monitor task lifecycle;
 2) recording new tasks in the filter map dynamically;
 3) reusing `accum_key` of parent task for new tasks.

Thanks,
Tengda

Tengda Wu (2):
  perf stat: Support inherit events during fork() for bperf
  perf test: Use sqrtloop workload to test bperf event

 tools/perf/tests/shell/stat_bpf_counters.sh   |  2 +-
 tools/perf/util/bpf_counter.c                 |  9 +--
 tools/perf/util/bpf_skel/bperf_follower.bpf.c | 75 +++++++++++++++++--
 tools/perf/util/bpf_skel/bperf_u.h            |  5 ++
 4 files changed, 79 insertions(+), 12 deletions(-)

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2.34.1