bpf.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: KP Singh <kpsingh@kernel.org>
To: bpf@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>,
	Florent Revest <revest@chromium.org>,
	Brendan Jackman <jackmanb@chromium.org>
Subject: [PATCH bpf-next v5 2/2] bpf/selftests: Add a short note about vmtest.sh in README.rst
Date: Thu,  4 Feb 2021 19:45:44 +0000	[thread overview]
Message-ID: <20210204194544.3383814-3-kpsingh@kernel.org> (raw)
In-Reply-To: <20210204194544.3383814-1-kpsingh@kernel.org>

Add a short note to make contributors aware of the existence of the
script. The documentation does not intentionally document all the
options of the script to avoid mentioning it in two places (it's
available in the usage / help message of the script).

Signed-off-by: KP Singh <kpsingh@kernel.org>
---
 tools/testing/selftests/bpf/README.rst | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
index ca064180d4d0..fd148b8410fa 100644
--- a/tools/testing/selftests/bpf/README.rst
+++ b/tools/testing/selftests/bpf/README.rst
@@ -6,6 +6,30 @@ General instructions on running selftests can be found in
 
 __ /Documentation/bpf/bpf_devel_QA.rst#q-how-to-run-bpf-selftests
 
+=========================
+Running Selftests in a VM
+=========================
+
+It's now possible to run the selftests using ``tools/testing/selftests/bpf/vmtest.sh``.
+The script tries to ensure that the tests are run with the same environment as they
+would be run post-submit in the CI used by the Maintainers.
+
+This script downloads a suitable Kconfig and VM userspace image from the system used by
+the CI. It builds the kernel (without overwriting your existing Kconfig), recompiles the
+bpf selftests, runs them (by default ``tools/testing/selftests/bpf/test_progs``) and
+saves the resulting output (by default in ``~/.bpf_selftests``).
+
+For more information on about using the script, run:
+
+.. code-block:: console
+
+  $ tools/testing/selftests/bpf/vmtest.sh -h
+
+.. note:: The script uses pahole and clang based on host environment setting.
+          If you want to change pahole and llvm, you can change `PATH` environment
+          variable in the beginning of script.
+
+.. note:: The script currently only supports x86_64.
 
 Additional information about selftest failures are
 documented here.
-- 
2.30.0.365.g02bc693789-goog


  parent reply	other threads:[~2021-02-04 19:46 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-04 19:45 [PATCH bpf-next v5 0/2] BPF selftest helper script KP Singh
2021-02-04 19:45 ` [PATCH bpf-next v5 1/2] bpf: Helper script for running BPF presubmit tests KP Singh
2021-02-04 19:45 ` KP Singh [this message]
2021-02-05  0:30 ` [PATCH bpf-next v5 0/2] BPF selftest helper script patchwork-bot+netdevbpf

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210204194544.3383814-3-kpsingh@kernel.org \
    --to=kpsingh@kernel.org \
    --cc=andrii@kernel.org \
    --cc=ast@kernel.org \
    --cc=bpf@vger.kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=jackmanb@chromium.org \
    --cc=revest@chromium.org \
    --subject='Re: [PATCH bpf-next v5 2/2] bpf/selftests: Add a short note about vmtest.sh in README.rst' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).