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Peter Zijlstra
89b3098703
Current arch_cpu_idle() is called with IRQs disabled, but will return with IRQs enabled. However, the very first thing the generic code does after calling arch_cpu_idle() is raw_local_irq_disable(). This means that architectures that can idle with IRQs disabled end up doing a pointless 'enable-disable' dance. Therefore, push this IRQ disabling into the idle function, meaning that those architectures can avoid the pointless IRQ state flipping. Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Tested-by: Tony Lindgren <[email protected]> Tested-by: Ulf Hansson <[email protected]> Reviewed-by: Gautham R. Shenoy <[email protected]> Acked-by: Mark Rutland <[email protected]> [arm64] Acked-by: Rafael J. Wysocki <[email protected]> Acked-by: Guo Ren <[email protected]> Acked-by: Frederic Weisbecker <[email protected]> Link: https://lore.kernel.org/r/[email protected]