| Message ID | 20241102-kunit-qemu-accel-macos-v2-1-9d4579fddd20@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | kunit: enable hardware virtualization | expand |
On Sat, 2 Nov 2024 at 20:10, Tamir Duberstein <tamird@gmail.com> wrote: > > Python 3.13 added os.process_cpu_count as a cross-platform alternative > for the Linux-only os.sched_getaffinity. Use it when it's available and > provide a fallback when it's not. > > This allows kunit to run on macOS. > > Signed-off-by: Tamir Duberstein <tamird@gmail.com> > --- Looks plausible enough to me. Thanks very much! Reviewed-by: David Gow <davidgow@google.com> Cheers, -- David > tools/testing/kunit/kunit.py | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py > index bc74088c458aee20b1a21fdeb9f3cb01ab20fec4..3a8cbb868ac559f68d047e38be92f7c64a3314ea 100755 > --- a/tools/testing/kunit/kunit.py > +++ b/tools/testing/kunit/kunit.py > @@ -303,7 +303,16 @@ def massage_argv(argv: Sequence[str]) -> Sequence[str]: > return list(map(massage_arg, argv)) > > def get_default_jobs() -> int: > - return len(os.sched_getaffinity(0)) > + if sys.version_info >= (3, 13): > + if (ncpu := os.process_cpu_count()) is not None: > + return ncpu > + raise RuntimeError("os.process_cpu_count() returned None") > + # See https://github.com/python/cpython/blob/b61fece/Lib/os.py#L1175-L1186. > + if sys.platform != "darwin": > + return len(os.sched_getaffinity(0)) > + if (ncpu := os.cpu_count()) is not None: > + return ncpu > + raise RuntimeError("os.cpu_count() returned None") > > def add_common_opts(parser: argparse.ArgumentParser) -> None: > parser.add_argument('--build_dir', > > -- > 2.47.0 >
diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py index bc74088c458aee20b1a21fdeb9f3cb01ab20fec4..3a8cbb868ac559f68d047e38be92f7c64a3314ea 100755 --- a/tools/testing/kunit/kunit.py +++ b/tools/testing/kunit/kunit.py @@ -303,7 +303,16 @@ def massage_argv(argv: Sequence[str]) -> Sequence[str]: return list(map(massage_arg, argv)) def get_default_jobs() -> int: - return len(os.sched_getaffinity(0)) + if sys.version_info >= (3, 13): + if (ncpu := os.process_cpu_count()) is not None: + return ncpu + raise RuntimeError("os.process_cpu_count() returned None") + # See https://github.com/python/cpython/blob/b61fece/Lib/os.py#L1175-L1186. + if sys.platform != "darwin": + return len(os.sched_getaffinity(0)) + if (ncpu := os.cpu_count()) is not None: + return ncpu + raise RuntimeError("os.cpu_count() returned None") def add_common_opts(parser: argparse.ArgumentParser) -> None: parser.add_argument('--build_dir',
Python 3.13 added os.process_cpu_count as a cross-platform alternative for the Linux-only os.sched_getaffinity. Use it when it's available and provide a fallback when it's not. This allows kunit to run on macOS. Signed-off-by: Tamir Duberstein <tamird@gmail.com> --- tools/testing/kunit/kunit.py | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)