On 02/23/2012 04:57 AM, Ming Lei wrote:
No, it doesn't work with upstream kernel now. You need to apply the patches[1][2] against upstream kernel to route CTIs IRQ so that OMAP4 PMU/perf can work well.
[1], http://marc.info/?l=linux-omap&m=132686049213313&w=2 [2], http://marc.info/?l=linux-arm-kernel&m=132687938417894&w=2
I'm not sure about "well" :-(:
... irq 34: nobody cared (try booting with the "irqpoll" option) ... Disabling IRQ #34 irq 33: nobody cared (try booting with the "irqpoll" option) ... Disabling IRQ #33 ...
cat /proc/interrupts ==>
CPU0 CPU1 29: 302749 362285 GIC twd 33: 400001 0 GIC arm-pmu 34: 0 400001 GIC arm-pmu
Dmitry