Messages in this thread | | | Date | Wed, 10 Dec 2014 17:22:02 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: [question] on which cpu an interrupt controller will raise an irq ? |
| |
On Sun, 7 Dec 2014, Daniel Lezcano wrote: > I am not very familiar with the interrupt subsystem, so sorry if this sounds a > stupid question. > > IIUC, when a interrupt happens on a SMP system and if there is no affinity set > for it, it is delivered following a scheme decided by the interrupt > controller. > > For example, for the APIC, there is a round robin behaviour, so an interrupt > will be raised on cpu0, then cpu1, and so on ... > > Is there a way to know on which cpu a controller will raise the interrupt ?
No generic way which would allow to predict it on every controller we support.
Thanks,
tglx
| |