CONFIG_MIPS_MT_SMTC_IM_BACKSTOP: Use per-TC register bits as backstop for inhibited IM bits

General informations

The Linux kernel configuration item CONFIG_MIPS_MT_SMTC_IM_BACKSTOP:

• prompt: Use per-TC register bits as backstop for inhibited IM bits
• type: bool
• depends on: CONFIG_MIPS_MT_SMTC
• defined in arch/mips/Kconfig
• found in Linux kernels: 2.6.23–2.6.39, 3.0–3.15

Help text

To support multiple TC microthreads acting as "CPUs" within a VPE, VPE-wide interrupt mask bits must be specially manipulated during interrupt handling. To support legacy drivers and interrupt controller management code, SMTC has a "backstop" to track and if necessary restore the interrupt mask. This has some performance impact on interrupt service overhead.

Hardware

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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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