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arch_idle() cleanup and mach/system.h removal

Jamie Iles linux-arm-kernel 1 version New

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  1. v1 Latest0 of 20 patches 0 repliesNew

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Cover letter [PATCH 00/20] arch_idle() cleanup and mach/system.h removal

Hi Nicolas,

Quoted 14 lines · Nicolas Pitre

This is the logical continuation of the arch_reset() work that Russell did and therefore this must be applied on top of Russell's "reset" branch.

Most arch_idle() implementations are simply a call to cpu_do_idle() and can be eliminated in favor of a common call. However, some platforms require special idle handling and the arm_pm_idle hook is made available for those cases.

Why "arm_pm_idle"? Because there is already a generic "pm_idle", but its calling convention is rather awkward with regard to interrupts, so the default "pm_idle" handler will call arm_pm_idle if it is non null, or cpu_do_idle otherwise. The generic pm_idle hook still can be overriden as before.

Quoted 3 lines

This series is therefore meant to be functionally a big no-op i.e. everything should just behave as before, despite having more than 1000 lines of code and 55 files removed in the end.

Tested on picoxcell, works great.

Acked-and-tested-by Jamie Iles <[email protected]>

btw,

Quoted 1 line

[PATCH 20/20] ARM: big removal of now unused arch_reset()

I guess this should be "ARM: big removal of now unused mach/system.h" or similar?

Jamie

Read the cover letter in its thread