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Date: Thu, 7 Oct 2021 02:05:09 +0000 From: "Longpeng (Mike, Cloud Infrastructure Service Product Dept.)" <longpeng2@...wei.com> To: "Paraschiv, Andra-Irina" <andraprs@...zon.com> CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Gonglei (Arei)" <arei.gonglei@...wei.com>, "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>, "kamal@...onical.com" <kamal@...onical.com>, "pbonzini@...hat.com" <pbonzini@...hat.com>, "sgarzare@...hat.com" <sgarzare@...hat.com>, "stefanha@...hat.com" <stefanha@...hat.com>, "vkuznets@...hat.com" <vkuznets@...hat.com>, "ne-devel-upstream@...zon.com" <ne-devel-upstream@...zon.com>, "lexnv@...zon.com" <lexnv@...zon.com>, "alcioa@...zon.com" <alcioa@...zon.com> Subject: RE: [PATCH v2 3/4] nitro_enclaves: add test framework for the misc functionality > -----Original Message----- > From: Paraschiv, Andra-Irina [mailto:andraprs@...zon.com] > Sent: Sunday, October 3, 2021 9:50 PM > To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.) > <longpeng2@...wei.com> > Cc: linux-kernel@...r.kernel.org; Gonglei (Arei) <arei.gonglei@...wei.com>; > gregkh@...uxfoundation.org; kamal@...onical.com; pbonzini@...hat.com; > sgarzare@...hat.com; stefanha@...hat.com; vkuznets@...hat.com; > ne-devel-upstream@...zon.com; lexnv@...zon.com; alcioa@...zon.com > Subject: Re: [PATCH v2 3/4] nitro_enclaves: add test framework for the misc > functionality > > > > On 21/09/2021 18:10, Longpeng(Mike) wrote: > > Add test framework for the misc functionality. > > Let's add more specifics here. > > nitro_enclaves: Add KUnit tests setup for the misc device functionality > > Add the initial setup for the KUnit tests that will target the Nitro > Enclaves misc device functionality. > OK, thanks. > > > > Signed-off-by: Longpeng(Mike) <longpeng2@...wei.com> > > --- > > drivers/virt/nitro_enclaves/Kconfig | 8 ++++++++ > > drivers/virt/nitro_enclaves/ne_misc_dev.c | 27 > +++++++++++++++++++++++++++ > > drivers/virt/nitro_enclaves/ne_misc_test.c | 17 +++++++++++++++++ > > 3 files changed, 52 insertions(+) > > create mode 100644 drivers/virt/nitro_enclaves/ne_misc_test.c > > Please modify in all places where necessary to mention Nitro Enclaves > "misc device", instead of just "misc", to be more specific. > > For example, here can be "ne_misc_dev_test.c". > OK. > > > > diff --git a/drivers/virt/nitro_enclaves/Kconfig > b/drivers/virt/nitro_enclaves/Kconfig > > index 8c9387a..24c54da 100644 > > --- a/drivers/virt/nitro_enclaves/Kconfig > > +++ b/drivers/virt/nitro_enclaves/Kconfig > > @@ -18,3 +18,11 @@ config NITRO_ENCLAVES > > > > To compile this driver as a module, choose M here. > > The module will be called nitro_enclaves. > > + > > +config NITRO_ENCLAVES_MISC_TEST > > NITRO_ENCLAVES_MISC_DEV_TEST > > > + bool "Tests for the misc functionality of Nitro enclaves" > > misc device functionality of the Nitro Enclaves > > > + depends on NITRO_ENCLAVES && KUNIT=y > > + help > > + Enable KUnit tests for the misc functionality of Nitro Enclaves. Select > > misc device functionality of the Nitro Enclaves > OK, thanks. > > + this option only if you will boot the kernel for the purpose of running > > + unit tests (e.g. under UML or qemu). If unsure, say N. > > diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev.c > b/drivers/virt/nitro_enclaves/ne_misc_dev.c > > index d551b88..0131e1b 100644 > > --- a/drivers/virt/nitro_enclaves/ne_misc_dev.c > > +++ b/drivers/virt/nitro_enclaves/ne_misc_dev.c > > @@ -1735,8 +1735,33 @@ static long ne_ioctl(struct file *file, unsigned int > cmd, unsigned long arg) > > return 0; > > } > > > > +#if defined(CONFIG_NITRO_ENCLAVES_MISC_TEST) > > +#include "ne_misc_test.c" > > + > > +static inline int ne_misc_test_init(void) > > +{ > > + return __kunit_test_suites_init(ne_misc_test_suites); > > +} > > + > > +static inline void ne_misc_test_exit(void) > > +{ > > + __kunit_test_suites_exit(ne_misc_test_suites); > > +} > > +#else > > +static inline int ne_misc_test_init(void) > > +{ > > + return 0; > > +} > > + > > +static inline void ne_misc_test_exit(void) > > +{ > > +} > > +#endif > > s/misc/misc_dev/g > > Why are these needed? Can't the test suite be setup using > "kunit_test_suite" as in the KUnit documentation example [1]? > > Wouldn't be necessary to conditionally compile the ne_misc_dev_test, > based on the kernel config above? > > [1] > https://www.kernel.org/doc/html/latest/dev-tools/kunit/start.html#writing-y > our-first-test > Both of these two ways are supported in kernel, for example [2]. There are two reasons why I choose this way: 1. The functions (to test) in "ne_misc_dev.c" are 'static', we cannot invoke them in "ne_misc_dev_test.c". 2. kunit_test_suite defines a module init function internal, and "ne_misc_dev.c" also defines one, so they cannot be compiled into one module. [2] https://elixir.bootlin.com/linux/v5.15-rc4/source/drivers/mmc/host/sdhci-of-aspeed.c#L612 > > + > > static int __init ne_init(void) > > { > > + ne_misc_test_init(); > > + > > mutex_init(&ne_cpu_pool.mutex); > > > > return pci_register_driver(&ne_pci_driver); > > @@ -1747,6 +1772,8 @@ static void __exit ne_exit(void) > > pci_unregister_driver(&ne_pci_driver); > > > > ne_teardown_cpu_pool(); > > + > > + ne_misc_test_exit(); > > } > > > > module_init(ne_init); > > diff --git a/drivers/virt/nitro_enclaves/ne_misc_test.c > b/drivers/virt/nitro_enclaves/ne_misc_test.c > > new file mode 100644 > > index 0000000..3426c35 > > --- /dev/null > > +++ b/drivers/virt/nitro_enclaves/ne_misc_test.c > > @@ -0,0 +1,17 @@ > > +// SPDX-License-Identifier: GPL-2.0-or-later > > + > > +#include <kunit/test.h> > > + > > +static struct kunit_case ne_misc_test_cases[] = { > > + {} > > +}; > > + > > +static struct kunit_suite ne_misc_test_suite = { > > + .name = "ne_misc_test", > > + .test_cases = ne_misc_test_cases, > > +}; > > + > > +static struct kunit_suite *ne_misc_test_suites[] = { > > + &ne_misc_test_suite, > > + NULL > > +}; > > > > Can replace "ne_misc" with "ne_misc_dev". > > Thanks, > Andra > > > > Amazon Development Center (Romania) S.R.L. registered office: 27A Sf. Lazar > Street, UBC5, floor 2, Iasi, Iasi County, 700045, Romania. Registered in Romania. > Registration number J22/2621/2005.
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