linux-kernel - Re: [PATCH 2/3] bitmap: Rename module

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Message-ID: <85f575b4-4842-4189-9bba-9ee1085a5e80@collabora.com>
Date: Mon, 29 Jul 2024 13:07:37 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Yury Norov <yury.norov@...il.com>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Rasmus Villemoes <linux@...musvillemoes.dk>, Shuah Khan <shuah@...nel.org>,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 kees@...nel.org, David Gow <davidgow@...gle.com>,
 John Hubbard <jhubbard@...dia.com>, kernel@...labora.com
Subject: Re: [PATCH 2/3] bitmap: Rename module

On 7/27/24 10:35 PM, Yury Norov wrote:
> On Fri, Jul 26, 2024 at 04:06:57PM +0500, Muhammad Usama Anjum wrote:
>> Rename module to bitmap_kunit and rename the configuration option
>> compliant with kunit framework.
> 
> ... , so those enabling bitmaps testing in their configs by setting
> "CONFIG_TEST_BITMAP=y" will suddenly get it broken, and will likely
> not realize it until something nasty will happen.
CONFIG_TEST_BITMAP was being enabled by the kselftest suite lib. The bitmap
test and its config option would disappear. The same test can be run by
just enabling KUNIT default config option:

KUNIT_ALL_TESTS=y enables this bitmap config by default.

> 
> Sorry, NAK for config rename.
>  
>> Cc: kees@...nel.org
>> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
>> ---
>>  MAINTAINERS                           |  2 +-
>>  lib/Kconfig.debug                     | 15 ++++++++-------
>>  lib/Makefile                          |  2 +-
>>  lib/{test_bitmap.c => bitmap_kunit.c} |  0
>>  4 files changed, 10 insertions(+), 9 deletions(-)
>>  rename lib/{test_bitmap.c => bitmap_kunit.c} (100%)
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 12b870712da4a..289b727344d64 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -3814,13 +3814,13 @@ F:	include/linux/find.h
>>  F:	include/linux/nodemask.h
>>  F:	include/linux/nodemask_types.h
>>  F:	include/vdso/bits.h
>> +F:	lib/bitmap_kunit.c
>>  F:	lib/bitmap-str.c
>>  F:	lib/bitmap.c
>>  F:	lib/cpumask.c
>>  F:	lib/cpumask_kunit.c
>>  F:	lib/find_bit.c
>>  F:	lib/find_bit_benchmark.c
>> -F:	lib/test_bitmap.c
>>  F:	tools/include/linux/bitfield.h
>>  F:	tools/include/linux/bitmap.h
>>  F:	tools/include/linux/bits.h
>> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
>> index a30c03a661726..6bb02990a73e7 100644
>> --- a/lib/Kconfig.debug
>> +++ b/lib/Kconfig.debug
>> @@ -2420,13 +2420,6 @@ config TEST_PRINTF
>>  config TEST_SCANF
>>  	tristate "Test scanf() family of functions at runtime"
>>  
>> -config TEST_BITMAP
>> -	tristate "Test bitmap_*() family of functions at runtime"
>> -	help
>> -	  Enable this option to test the bitmap functions at boot.
>> -
>> -	  If unsure, say N.
>> -
>>  config TEST_UUID
>>  	tristate "Test functions located in the uuid module at runtime"
>>  
>> @@ -2813,6 +2806,14 @@ config USERCOPY_KUNIT_TEST
>>  	  on the copy_to/from_user infrastructure, making sure basic
>>  	  user/kernel boundary testing is working.
>>  
>> +config BITMAP_KUNIT_TEST
>> +	tristate "KUnit Test for bitmap_*() family of functions"
>> +	depends on KUNIT
>> +	default KUNIT_ALL_TESTS
>> +	help
>> +	  This builds the "bitmap_kunit" module that runs tests for
>> +	  bitmaps int the kernel making sure that there isn't any bug.
>> +
>>  config TEST_UDELAY
>>  	tristate "udelay test driver"
>>  	help
>> diff --git a/lib/Makefile b/lib/Makefile
>> index 322bb127b4dc6..37e7359a7065e 100644
>> --- a/lib/Makefile
>> +++ b/lib/Makefile
>> @@ -84,7 +84,6 @@ obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o
>>  obj-$(CONFIG_TEST_PRINTF) += test_printf.o
>>  obj-$(CONFIG_TEST_SCANF) += test_scanf.o
>>  
>> -obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
>>  ifeq ($(CONFIG_CC_IS_CLANG)$(CONFIG_KASAN),yy)
>>  # FIXME: Clang breaks test_bitmap_const_eval when KASAN and GCOV are enabled
>>  GCOV_PROFILE_test_bitmap.o := n
>> @@ -388,6 +387,7 @@ CFLAGS_fortify_kunit.o += $(DISABLE_STRUCTLEAK_PLUGIN)
>>  obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o
>>  obj-$(CONFIG_SIPHASH_KUNIT_TEST) += siphash_kunit.o
>>  obj-$(CONFIG_USERCOPY_KUNIT_TEST) += usercopy_kunit.o
>> +obj-$(CONFIG_BITMAP_KUNIT_TEST) += bitmap_kunit.o
>>  
>>  obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o
>>  
>> diff --git a/lib/test_bitmap.c b/lib/bitmap_kunit.c
>> similarity index 100%
>> rename from lib/test_bitmap.c
>> rename to lib/bitmap_kunit.c
>> -- 
>> 2.39.2
> 

-- 
BR,
Muhammad Usama Anjum