On Jul 27, 2012, at 5:20 PM, Benjamin Herrenschmidt wrote: > On Fri, 2012-07-27 at 16:58 -0500, Kumar Gala wrote: >> On Jul 20, 2012, at 7:47 AM, Zhao Chenhui wrote: >> >>> During suspend, all interrupts including IPI will be disabled. In this case, >>> the suspend process will hang in SMP. To prevent this, pass the flag >>> IRQF_NO_SUSPEND when requesting IPI irq. >>> >>> Signed-off-by: Zhao Chenhui <chenhui.z...@freescale.com> >>> Signed-off-by: Li Yang <le...@freescale.com> >>> --- >>> arch/powerpc/kernel/smp.c | 2 +- >>> 1 files changed, 1 insertions(+), 1 deletions(-) >> >> BenH, >> >> Can you ack? > > No I'll merge it but not until it's been in next for a bit unless you > have some strong emergency there, it's on my mental list of things to > shovel into next after rc1.
I wasn't clear, I was meaning for my 'next' tree, not 3.6. Trying to get these FSL PM patches into my 'next' for 3.7. - k > Curiosity: didn't we use to disable all non-boot CPUs on suspend ? > > Cheers, > Ben. > >> - k >> >>> >>> diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c >>> index fecb038..d26bbf8 100644 >>> --- a/arch/powerpc/kernel/smp.c >>> +++ b/arch/powerpc/kernel/smp.c >>> @@ -171,7 +171,7 @@ int smp_request_message_ipi(int virq, int msg) >>> } >>> #endif >>> err = request_irq(virq, smp_ipi_action[msg], >>> - IRQF_PERCPU | IRQF_NO_THREAD, >>> + IRQF_PERCPU | IRQF_NO_THREAD | IRQF_NO_SUSPEND, >>> smp_ipi_name[msg], 0); >>> WARN(err < 0, "unable to request_irq %d for %s (rc %d)\n", >>> virq, smp_ipi_name[msg], err); >>> -- >>> 1.6.4.1 >>> > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
