refscale: Add local_irq_disable() and local_irq_save() readers

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This commit adds refscale readers based on local_irq_disable() and
local_irq_enable() ("refscale.scale_type=irq") and on local_irq_save()
and local_irq_restore ("refscale.scale_type=irqsave").  On my x86 laptop,
these are about 2.8ns and 7.5ns per enable/disable pair, respectively.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>

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Paul E. McKenney 2025-11-02 14:49:42 -08:00 • committed by Frederic Weisbecker

parent 3a86608788

commit edd6f78b75

1 changed files with 65 additions and 1 deletions

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kernel/rcu/refscale.c

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