CONFIG_BFIN_EXTMEM_WRITEBACK: Write back

General informations

The Linux kernel configuration item CONFIG_BFIN_EXTMEM_WRITEBACK:

• prompt: Write back
• type: bool
• depends on: ! CONFIG_SMP
• defined in arch/blackfin/Kconfig
• found in Linux kernels: 2.6.31–2.6.39, 3.0–3.19, 4.0–4.16

Help text

Write Back Policy: Cached data will be written back to SDRAM only when needed. This can give a nice increase in performance, but beware of broken drivers that do not properly invalidate/flush their cache.

Write Through Policy: Cached data will always be written back to SDRAM when the cache is updated. This is a completely safe setting, but performance is worse than Write Back.

If you are unsure of the options and you want to be safe, then go with Write Through.

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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