* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > [ Ingo added to cc, since this is x86-specific ] > > On Tue, 22 Apr 2008, Jens Axboe wrote: > > +++ b/arch/x86/kernel/apic_32.c > > @@ -1357,6 +1357,10 @@ void __init smp_intr_init(void) > > > > /* IPI for generic function call */ > > set_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt); > > + > > + /* IPI for single call function */ > > + set_intr_gate(CALL_FUNCTION_SINGLE_VECTOR, > > + call_function_single_interrupt); > > Ok, one more comment.. > > Why bother with separate vectors for this? this was my first question a month ago when Jens/Nick first submitted it :) > Or is it just a performance optimization? [...] yes and i gave in - Nick and Jens wants to do some crazy stuff and they had the numbers. Here's the previous discussion: http://lkml.org/lkml/2008/2/27/125 Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
