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CONFIG_HZ

Liem Le
Prodigy 110 points

I am using AM335x EVM board and I would like to change the CONFIG_HZ from 100 to 1000. I could not find any place in the "make menuconfig" to make this change. Please let me know if this is possible.

Thanks

  • 0
    TI__Expert 5745 points

    Liem,

    I don't know the specific effect of modifying CONFIG_HZ , but all board configs can be found in the following folder

    /ti-sdk-am335x-evm-05.05.00.00/board-support/linux-3.2.0-psp04.06.00.08.sdk/arch/arm/configs

    (folder path may differ slightly between SDK versions)

    As an example - for the AM335x EVM - take a look at the file "am335x_evm_defconfig" within that folder, the CONFIG_HZ setting is within.

  • 0 in reply to Keegan@TI
    Prodigy 110 points

    Thank you for the response. I am currently use am335x_evm_defconfig as the configuration base, but I want to change HZ from 100 to 1000 to reduce the scheduling latency, but does not know how to do it with "make menuconfig". On regular Linux distribution, there is option in the "make menuconfig" to change this, but not on TI Linux kernel.

  • 0 in reply to Liem Le
    Guru 31670 points

    Liem,

    The value is hardcoded to 100 in arch/arm/Kconfig. Change it to 1000, it will work.