On Fri, Aug 27, 2021 at 4:13 PM Yucong Sun [off-list ref] wrote:

From: Yucong Sun <redacted>

This patch adds "-p" parameter to test_progs, which will spawn workers and
distribute tests evenly among all workers, speeding up execution.

make and pahole use -j for parallelism, let's use the same for
familiarity? pahole (make gives a bad example in this regard) is using
a good convention that if no number of workers is provided with -j, it
assumes number of CPUs. I think that's a good default, let's do that
as well.

"-p" mode is optional, and works with all existing test selection mechanism,
including "-l".

Each worker print its own summary and exit with its own status, the main
process will collect all status together and exit with a overall status.

Signed-off-by: is missing, don't forget about it.

---
 tools/testing/selftests/bpf/test_progs.c | 94 ++++++++++++++++++++++--
 tools/testing/selftests/bpf/test_progs.h |  3 +
 2 files changed, 91 insertions(+), 6 deletions(-)

I'll add high-level comments on the cover letter (which single patch
submissions don't really need, cover letter is required only for patch
sets with more than one patch; no big deal, but keep this in mind).