----- Original Message -----
> From: "Thomas Meyer" <tho...@m3y3r.de>
> To: "user-mode-linux-devel" <user-mode-linux-devel@lists.sourceforge.net>
> Sent: Sunday, October 19, 2014 4:14:13 PM
> Subject: [uml-devel] [PATCH v3 3/3] um: enable trace irqflags support
>
> Add TRACE_IRQFLAGS_SUPPORT to UML.
> This enables LOCKDEP_SUPPORT and TRACING_SUPPORT.
FYI: I'm currently working on porting ftrace() support to
uml. It will take another week or two since I don't have enough
time to debug, and it isn't stable yet (read as is panic()ing randomly)
>
> Signed-off-by: Thomas Meyer <tho...@m3y3r.de>
> ---
> diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
> index 87bc868..6a33c3a 100644
> --- a/arch/um/Kconfig.common
> +++ b/arch/um/Kconfig.common
> @@ -28,10 +28,9 @@ config PCI
> config PCMCIA
> bool
>
> -# Yet to do!
> config TRACE_IRQFLAGS_SUPPORT
> bool
> - default n
> + default y
>
> config LOCKDEP_SUPPORT
> bool
> diff --git a/arch/um/include/asm/irqflags.h
> b/arch/um/include/asm/irqflags.h
> index c780d8a..c5b636e 100644
> --- a/arch/um/include/asm/irqflags.h
> +++ b/arch/um/include/asm/irqflags.h
> @@ -34,9 +34,9 @@ static inline unsigned long
> arch_local_irq_save(void)
> return flags;
> }
>
> -static inline bool arch_irqs_disabled(void)
> +static inline int arch_irqs_disabled_flags(unsigned long flags)
> {
> - return arch_local_save_flags() == 0;
> + return flags == 0;
> }
>
> #endif
I'm not sure if this is correct. I'd rather would have another function
implemented instead of removing the check for disabled irqs.
cheers,
daniel
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