Ard Biesheuvel 75fa4adc4f ARM: smp: elide HWCAP_TLS checks or __entry_task updates on SMP+v6 ...

Use the SMP_ON_UP patching framework to elide HWCAP_TLS tests from the
context switch and return to userspace code paths, as SMP systems are
guaranteed to have this h/w capability.

At the same time, omit the update of __entry_task if the system is
detected to be UP at runtime, as in that case, the value is never used.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

2022-01-25 09:53:52 +01:00

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