From bea248fb30c3122ece8c34798527fac431c1d7b0 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 30 Jun 2005 15:07:09 +1000 Subject: [PATCH] ppc64: Remove lpqueue pointer from the paca on iSeries The iSeries code keeps a pointer to the ItLpQueue in its paca struct. But all these pointers end up pointing to the one place, ie. xItLpQueue. So remove the pointer from the paca struct and just refer to xItLpQueue directly where needed. The only complication is that the spread_lpevents logic was implemented by having a NULL lpqueue pointer in the paca on CPUs that weren't supposed to process events. Instead we just compare the spread_lpevents value to the processor id to get the same behaviour. Signed-off-by: Michael Ellerman Acked-by: Stephen Rothwell Signed-off-by: Paul Mackerras --- arch/ppc64/kernel/ItLpQueue.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'arch/ppc64/kernel/ItLpQueue.c') diff --git a/arch/ppc64/kernel/ItLpQueue.c b/arch/ppc64/kernel/ItLpQueue.c index cdea00d7707f..e90dca8bd136 100644 --- a/arch/ppc64/kernel/ItLpQueue.c +++ b/arch/ppc64/kernel/ItLpQueue.c @@ -69,15 +69,17 @@ struct HvLpEvent * ItLpQueue_getNextLpEvent( struct ItLpQueue * lpQueue ) return nextLpEvent; } +unsigned long spread_lpevents = 1; + int ItLpQueue_isLpIntPending( struct ItLpQueue * lpQueue ) { - int retval = 0; - struct HvLpEvent * nextLpEvent; - if ( lpQueue ) { - nextLpEvent = (struct HvLpEvent *)lpQueue->xSlicCurEventPtr; - retval = nextLpEvent->xFlags.xValid | lpQueue->xPlicOverflowIntPending; - } - return retval; + struct HvLpEvent *next_event; + + if (smp_processor_id() >= spread_lpevents) + return 0; + + next_event = (struct HvLpEvent *)lpQueue->xSlicCurEventPtr; + return next_event->xFlags.xValid | lpQueue->xPlicOverflowIntPending; } void ItLpQueue_clearValid( struct HvLpEvent * event ) -- cgit v1.2.3-55-g7522