| Message ID | 20230224135230.2295826-1-linus.walleij@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: defconfig: Add IOSCHED_BFQ to the default configs | expand |
On Fri, 24 Feb 2023 at 14:52, Linus Walleij <linus.walleij@linaro.org> wrote: > > ARM64 systems are often memory constrained and more often than not > use slow single-channel storage such as flash memory or MMC/SD-cards. > For any interactive systems (such as mobile phones, tablets, > chromebooks...) the BFQ I/O scheduler will be desireable. > > Make sure the BFQ I/O scheduler is available on these systems. > > ARM (32), Loongarch, MIPS, m68k, UM and S390 has also enabled BFQ in > their defconfigs, cf commit b495dfed706c4c5873c0dab8930ad6eb1d276a6c > "um: Cleanup CONFIG_IOSCHED_CFQ" where the motivation is that > it replaces the former CFQ scheduler. > > Cc: linux-arm-kernel@lists.infradead.org > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will@kernel.org> > Cc: Paolo Valente <paolo.valente@linaro.org> > Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > Cc: Ulf Hansson <ulf.hansson@linaro.org> > Cc: Arnd Bergmann <arnd@arndb.de> > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Seems reasonable to me! Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Kind regards Uffe > --- > SoC maintainers: please apply this directly to the ARM64 > defconfig branch if we have consensus. > --- > arch/arm64/configs/defconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig > index 851e8f9be06d..503cc08cf112 100644 > --- a/arch/arm64/configs/defconfig > +++ b/arch/arm64/configs/defconfig > @@ -126,6 +126,7 @@ CONFIG_CRYPTO_AES_ARM64_BS=m > CONFIG_JUMP_LABEL=y > CONFIG_MODULES=y > CONFIG_MODULE_UNLOAD=y > +CONFIG_IOSCHED_BFQ=y > # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set > # CONFIG_COMPAT_BRK is not set > CONFIG_MEMORY_HOTPLUG=y > -- > 2.34.1 >
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 851e8f9be06d..503cc08cf112 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -126,6 +126,7 @@ CONFIG_CRYPTO_AES_ARM64_BS=m CONFIG_JUMP_LABEL=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y +CONFIG_IOSCHED_BFQ=y # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set # CONFIG_COMPAT_BRK is not set CONFIG_MEMORY_HOTPLUG=y
ARM64 systems are often memory constrained and more often than not use slow single-channel storage such as flash memory or MMC/SD-cards. For any interactive systems (such as mobile phones, tablets, chromebooks...) the BFQ I/O scheduler will be desireable. Make sure the BFQ I/O scheduler is available on these systems. ARM (32), Loongarch, MIPS, m68k, UM and S390 has also enabled BFQ in their defconfigs, cf commit b495dfed706c4c5873c0dab8930ad6eb1d276a6c "um: Cleanup CONFIG_IOSCHED_CFQ" where the motivation is that it replaces the former CFQ scheduler. Cc: linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Paolo Valente <paolo.valente@linaro.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- SoC maintainers: please apply this directly to the ARM64 defconfig branch if we have consensus. --- arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+)