Re: [PROBLEM] make bindeb-pkg: When just one source line in a single driver is changed, all driver are rebuilt?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi, Mr. Weißschuh,

On 11/21/24 22:43, Thomas Weißschuh wrote:

> Hi Mirsad,
>
> On 2024-11-21 22:18:58+0100, Mirsad Todorovac wrote:
>> I am perplexed now at 6.12 stable vanilla tree, and I've noticed that after changing just one
>> line in ./drivers/gpu/drm/xe/tests/xe_migrate.c:226:5-11, all unrelated drivers are being BTF'd, SIGNED,
>> and INSTALL-ed:
>>
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/aht10.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/coretemp.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/atxp1.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/corsair-cpro.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/adt7475.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/axi-fan-control.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/as370-hwmon.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/chipcap2.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/aquacomputer_d5next.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/coretemp.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/applesmc.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/corsair-psu.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/corsair-cpro.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/asus_rog_ryujin.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/cros_ec_hwmon.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/asc7621.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/da9052-hwmon.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/atxp1.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/axi-fan-control.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/corsair-psu.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/da9055-hwmon.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/chipcap2.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/cros_ec_hwmon.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/da9052-hwmon.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/coretemp.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/corsair-cpro.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/hwmon/dell-smm-hwmon.ko
> This happens when the vermagic is changed. The vermagic is linked into
> each module. And after relinking all the other steps also need to be
> done.
> Building the Debian package increases the build number which ends up in
> the vermagic and therefore all modules.
> Also there is CONFIG_LOCALVERSION_AUTO which may be involved.

Yes, I use CONFIG_LOCALVERSION_AUTO because it saves a lot of trouble in bisecting.

This vermagic manipulation is beyond my grasp. I understand that modules must match kernel version, for internal ABI often changes. But not between builds of the same source? Am I thinking right?

>> Is there an option to rebuild just the necessary driver that was modified?
> With the whole Debian packaging: No idea.
> With plain kbuild: make $MAKEFLAGS $PATH_TO_MODULE.ko
This could speed up some fixes, thanks :-)
>> 2.
>>
>> >From the list of files that were compiled, it seems that drivers/gpu/drm/xe/tests/xe_migrate.c was
>> not rebult:
>>
>> $ grep CC ../err-6.12.0-tiny-pt-02b.log
>>   CC      init/version.o
>>   CC      init/version-timestamp.o
>>   CC      arch/x86/boot/version.o
>>   CC      arch/x86/boot/compressed/kaslr.o
>>   CC      arch/x86/boot/compressed/misc.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/kallsyms
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/sorttable
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/asn1_compiler
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/genksyms/genksyms.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/selinux/genheaders/genheaders
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/selinux/mdp/mdp
>>   YACC    debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/genksyms/parse.tab.[ch]
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/sign-file
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/insert-sys-cert
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/genksyms/parse.tab.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/genksyms/lex.lex.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/mod/modpost.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/mod/file2alias.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/mod/sumversion.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/mod/symsearch.o
>>   HOSTCC  debian/linux-headers-6.12.0-dirty/usr/src/linux-headers-6.12.0-dirty/scripts/basic/fixdep
>>
>> But they were only BTF + INSTALL + STRIP + SIGN'ed:
>>
>> $ grep drivers/gpu/drm/xe/ ../err-6.12.0-tiny-pt-02b.log
>>   BTF [M] drivers/gpu/drm/xe/xe.ko
>>   INSTALL debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/gpu/drm/xe/xe.ko
>>   STRIP   debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/gpu/drm/xe/xe.ko
>>   SIGN    debian/linux-image-6.12.0-dirty/lib/modules/6.12.0-dirty/kernel/drivers/gpu/drm/xe/xe.ko
>>
>> Nothing suggests that "drivers/gpu/drm/xe/tests/xe_migrate.c" is being recompiled, though it was modified,
>> or at least "touch"-ed.
> Do you have CONFIG_DRM_XE_KUNIT_TEST enabled?
> It probably does not make sense to use Debian packaging for a kunit
> test. Just use kunit.py directly.
Thanks.
>
>> Is this the expected behaviour?
>>
>> (I have deliberately skipped "make clean", to see if I can save some building time and grid power.)

Best regards,
Mirsad

-- 
"Did I succeed in making a coherent view on the world?"





[Index of Archives]     [Linux&nblp;USB Development]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite Secrets]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux