Messages in this thread | | | Subject | Re: [PATCH] irqtrace-option-off-compile-fix | From | Arjan van de Ven <> | Date | Tue, 11 Jul 2006 20:05:41 +0200 |
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On Tue, 2006-07-11 at 09:36 -0700, Tim Chen wrote: > On Tue, 2006-07-11 at 19:13 +0200, Arjan van de Ven wrote: > > On Tue, 2006-07-11 at 09:23 -0700, Tim Chen wrote: > > > I was testing on x86_64 and turned off the option in > > > arch/x86_64/Kconfig.debug. > > > > > > When the option is turned off, the following functions become undefined: > > > local_irq_disable() > > > local_irq_enable() > > > local_irq_save(flags) > > > local_irq_restore(flags) > > > safe_halt() > > > local_save_flags() > > > irqs_disabled() > > > irqs_disabled_flags(flags) > > > > > > It seems plausible that some users may want to avoid the overhead of > > > tracing IRQFLAGS by turning the option off. > > > > eh that is a different config option! > > My typo, it is TRACE_IRQFLAGS_SUPPORT in arch/x86_64/Kconfig.debug.
that should never ever be user setable. That just says if you have support for the api.
The one you want is CONFIG_TRACE_IRQFLAGS .. which is the one that actually turns the tracing on
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