Re: [PATCH 20/36] arch/idle: Change arch_cpu_idle() IRQ behaviour

On Wed, Jun 8, 2022 at 4:46 PM Peter Zijlstra wrote: > > 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 th

Re: [PATCH 20/36] arch/idle: Change arch_cpu_idle() IRQ behaviour

On Wed, Jun 08, 2022 at 04:27:43PM +0200, Peter Zijlstra wrote: > 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 > archite

Re: [PATCH 20/36] arch/idle: Change arch_cpu_idle() IRQ behaviour

On Wed, Jun 8, 2022 at 4:27 PM Peter Zijlstra wrote: > > 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 th

[PATCH 20/36] arch/idle: Change arch_cpu_idle() IRQ behaviour

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-dis