diff options
| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2005-11-09 15:07:16 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2005-11-09 15:07:16 +1100 |
| commit | 5a7b3ff4670be3330842558dc5ae46ec3fc448e5 (patch) | |
| tree | f2d82bb4baef1fbdca5bcd199d882450820d6919 | |
| parent | b709c0832824da20a32a3119911b9f0cf6970452 (diff) | |
ppc64: allow iSeries to use IRQSTACKS again
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| -rw-r--r-- | arch/powerpc/platforms/iseries/irq.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c index a06603d84a4..a0ff7d95fdf 100644 --- a/arch/powerpc/platforms/iseries/irq.c +++ b/arch/powerpc/platforms/iseries/irq.c @@ -103,6 +103,9 @@ static void intReceived(struct XmPciLpEvent *eventParm, struct pt_regs *regsParm) { int irq; +#ifdef CONFIG_IRQSTACKS + struct thread_info *curtp, *irqtp; +#endif ++Pci_Interrupt_Count; @@ -110,7 +113,20 @@ static void intReceived(struct XmPciLpEvent *eventParm, case XmPciLpEvent_SlotInterrupt: irq = eventParm->hvLpEvent.xCorrelationToken; /* Dispatch the interrupt handlers for this irq */ - ppc_irq_dispatch_handler(regsParm, irq); +#ifdef CONFIG_IRQSTACKS + /* Switch to the irq stack to handle this */ + curtp = current_thread_info(); + irqtp = hardirq_ctx[smp_processor_id()]; + if (curtp != irqtp) { + irqtp->task = curtp->task; + irqtp->flags = 0; + call_ppc_irq_dispatch_handler(regsParm, irq, irqtp); + irqtp->task = NULL; + if (irqtp->flags) + set_bits(irqtp->flags, &curtp->flags); + } else +#endif + ppc_irq_dispatch_handler(regsParm, irq); HvCallPci_eoi(eventParm->eventData.slotInterrupt.busNumber, eventParm->eventData.slotInterrupt.subBusNumber, eventParm->eventData.slotInterrupt.deviceId); |