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Message-ID: <f96d57c9-efda-4781-a395-a7c5fec7f2ad@gmail.com> Date: Thu, 21 Nov 2024 22:18:58 +0100 From: Mirsad Todorovac <mtodorovac69@...il.com> To: Linux Kernel Build System <linux-kbuild@...r.kernel.org> Cc: Masahiro Yamada <masahiroy@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Bagas Sanjaya <bagasdotme@...il.com> Subject: [PROBLEM] make bindeb-pkg: When just one source line in a single driver is changed, all driver are rebuilt? Hi, 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 Is there an option to rebuild just the necessary driver that was modified? 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. Is this the expected behaviour? (I have deliberately skipped "make clean", to see if I can save some building time and grid power.) Thank you very much. Best regards, Mirsad Todorovac
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