CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK:

General informations

The Linux kernel configuration item CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK:

• prompt:
• type: bool
• depends on: (none)
• defined in arch/Kconfig
• found in Linux kernels: 3.13–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Architecture doesn't only execute the irq handler on the irq stack but also irq_exit(). This way we can process softirqs on this irq stack instead of switching to a new one when we call __do_softirq() in the end of an hardirq. This spares a stack switch and improves cache usage on softirq processing.

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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