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CONFIG_CYCLES_CLOCKSOURCE: Use 'CYCLES' as a clocksource (EXPERIMENTAL)

General informations

The Linux kernel configuration item CONFIG_CYCLES_CLOCKSOURCE has multiple definitions:

CYCLES found in arch/blackfin/Kconfig

The configuration item CONFIG_CYCLES_CLOCKSOURCE:

Help text

If you say Y here, you will enable support for using the 'cycles' registers as a clock source. Doing so means you will be unable to safely write to the 'cycles' register during runtime. You will still be able to read it (such as for performance monitoring), but writing the registers will most likely crash the kernel.

Use 'CYCLES' as a clocksource (EXPERIMENTAL) found in arch/blackfin/Kconfig

The configuration item CONFIG_CYCLES_CLOCKSOURCE:

Help text

If you say Y here, you will enable support for using the 'cycles' registers as a clock source. Doing so means you will be unable to safely write to the 'cycles' register during runtime. You will still be able to read it (such as for performance monitoring), but writing the registers will most likely crash the kernel.

Use 'CYCLES' as a clocksource found in arch/blackfin/Kconfig

The configuration item CONFIG_CYCLES_CLOCKSOURCE:

Help text

If you say Y here, you will enable support for using the 'cycles' registers as a clock source. Doing so means you will be unable to safely write to the 'cycles' register during runtime. You will still be able to read it (such as for performance monitoring), but writing the registers will most likely crash the kernel.

Hardware

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