Messages in this thread | | | Subject | Re: [PATCH] irqtrace-option-off-compile-fix | From | Tim Chen <> | Date | Tue, 11 Jul 2006 09:23:22 -0700 |
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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.
Regards, Tim Chen
On Tue, 2006-07-11 at 09:13 +0200, Arjan van de Ven wrote: > On Mon, 2006-07-10 at 17:18 -0700, Tim Chen wrote: > > When CONFIG_TRACE_IRQFLAGS_SUPPORT is turned off, the latest kernel has > > compile errors. The patch below fix the problems. > > > Hi, > > which architecture did you see this on? (asking because IA64 and PPC > compile just fine without this, and for x86 and x86-64 this is not an > option you can turn off as user, it's not a user selectable config > option but it's a "I have this feature in arch" option) > > Greetings, > Arjan van de Ven
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