On Tue, 23 Jun 2015, Arnd Bergmann wrote: > On Tuesday 23 June 2015 23:19:41 Paul Osmialowski wrote: > > Some SoCs need additional actions to be performed after arch idle, > > e.g. Kinetis requires invalidation of the I/D bus cache. > > > > Such handler could be held in provided <mach/idle.h> header file. > > > > Signed-off-by: Paul Osmialowski <pawelo@xxxxxxxxxxx> > > --- > > arch/arm/Kconfig | 7 +++++++ > > arch/arm/kernel/process.c | 7 +++++++ > > 2 files changed, 14 insertions(+) > > > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > > index 8e3a833..8ef8f8f 100644 > > --- a/arch/arm/Kconfig > > +++ b/arch/arm/Kconfig > > @@ -98,6 +98,13 @@ config ARM_HAS_SG_CHAIN > > config NEED_SG_DMA_LENGTH > > bool > > > > +config NEED_MACH_IDLE_H > > + bool > > + > > +config ARM_CPU_IDLE_QUIRKS > > + bool > > + select NEED_MACH_IDLE_H > > + > > We're not adding header files like this, please come up > with another solution. How about a cpuidle driver, or > possibly just overriding arm_pm_idle()? If the WFI instruction always requires I and D flushing, then it might be a better idea to provide a replacement for the corresponding cpu_*_do_idle function. Plenty of examples exist for other cpu_* functions. Nicolas -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
