CONFIG_ARC_CURR_IN_REG: cache current task pointer in gp

General informations

The Linux kernel configuration item CONFIG_ARC_CURR_IN_REG has multiple definitions:

cache current task pointer in gp found in arch/arc/Kconfig

The configuration item CONFIG_ARC_CURR_IN_REG:

• prompt: cache current task pointer in gp
• type: bool
• depends on: (none)
• defined in arch/arc/Kconfig
• found in Linux kernels: 6.6–6.8, 6.9-rc+HEAD

Help text

This reserves gp register to point to Current Task in kernel mode eliding memory access for each access

Dedicate Register r25 for current_task pointer found in arch/arc/Kconfig

The configuration item CONFIG_ARC_CURR_IN_REG:

• prompt: Dedicate Register r25 for current_task pointer
• type: bool
• depends on: (none)
• defined in arch/arc/Kconfig
• found in Linux kernels: 3.9–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.5

Help text

This reserved Register R25 to point to Current Task in kernel mode. This saves memory access for each such access

Hardware

LKDDb

Raw data from LKDDb:

• (none)

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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