On Thu, Apr 21, 2022 at 10:33:57PM -0700, Namhyung Kim wrote: SNIP > The perf bench sched messaging created 400 processes to send/receive > messages through unix sockets. It spent a large portion of cpu cycles > for audit filter and read/copy the messages while most of the > offcpu-time was in read and write calls. > > You can get the code from 'perf/offcpu-v1' branch in my tree at > > git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git > > Enjoy! :) CC builtin-record.o builtin-record.c:52:10: fatal error: util/off_cpu.h: No such file or directory 52 | #include "util/off_cpu.h" forgot to add util/off_cpu.h ? jirka > > Thanks, > Namhyung > > > Namhyung Kim (4): > perf report: Do not extend sample type of bpf-output event > perf record: Enable off-cpu analysis with BPF > perf record: Implement basic filtering for off-cpu > perf record: Handle argument change in sched_switch > > tools/perf/Makefile.perf | 1 + > tools/perf/builtin-record.c | 21 ++ > tools/perf/util/Build | 1 + > tools/perf/util/bpf_off_cpu.c | 301 +++++++++++++++++++++++++ > tools/perf/util/bpf_skel/off_cpu.bpf.c | 214 ++++++++++++++++++ > tools/perf/util/evsel.c | 4 +- > 6 files changed, 540 insertions(+), 2 deletions(-) > create mode 100644 tools/perf/util/bpf_off_cpu.c > create mode 100644 tools/perf/util/bpf_skel/off_cpu.bpf.c > > > base-commit: 41204da4c16071be9090940b18f566832d46becc > -- > 2.36.0.rc2.479.g8af0fa9b8e-goog >
