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[88.207.43.247]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aa50b52fe94sm497858766b.96.2024.11.25.11.11.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 25 Nov 2024 11:11:41 -0800 (PST) Message-ID: Date: Mon, 25 Nov 2024 20:10:42 +0100 Precedence: bulk X-Mailing-List: linux-kbuild@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PROBLEM] make bindeb-pkg: When just one source line in a single driver is changed, all driver are rebuilt? To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= Cc: Linux Kernel Build System , Masahiro Yamada , Linux Kernel Mailing List , Bagas Sanjaya References: <9748bda4-0db8-4c70-a321-c7189d575cbc@t-8ch.de> Content-Language: en-US From: Mirsad Todorovac In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 11/23/24 15:57, Thomas Weißschuh wrote: > Hi Mirsad, > > On 2024-11-23 02:53:09+0100, Mirsad Todorovac wrote: >> Hi, Mr. Weißschuh, > > Call me Thomas, please :-) It will be my honour, thanks :-) >> On 11/21/24 22:43, Thomas Weißschuh wrote: >> >>> 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? > > The ABI doesn't change between builds of the same source tree which is > why there are no actual rebuilds ("CC") of all modules. That is actually more precise. > But your usage of bindeb-pkg bumps the version string > (also without CONFIG_LOCALVERSION_AUTO) and this needs to end up in each > module file which explains the LD/BTF/SIGN/INSTALL steps. I see. I hoped there is a way around this. CONFIG_LOCALVERSION_AUTO is very useful when compared to manually keeping tracks of commits. Once upon a time, about a year or two ago, I told Mr. Bagas Sanjaya how a list of applied diffs could be added to the kernel manifest instead of just config-${VERSION} and "-dirty" flag. Thanks. Best regards, Mirsad > [..]