BPF offers another way to generate latency histograms. We attach...
kprobes at trace_preempt_off and trace_preempt_on and calculate the
time it takes to from seeing the off/on transition.
Signed-off-by: Daniel Wagner <daniel.wagner@xxxxxxxxxxxx>...
With the rebase on net-next no additinal patches are needed and this...
thing here runs fine.
samples/bpf/Makefile | 4 ++
samples/bpf/lathist_kern.c | 99 +++++++++++++++++++++++++++++++++++++++++++
samples/bpf/lathist_user.c | 103 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 206 insertions(+)
create mode 100644 samples/bpf/lathist_kern.c
create mode 100644 samples/bpf/lathist_user.c