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Commit ffe1b7e1 authored by Michael Ellerman's avatar Michael Ellerman Committed by Paul Mackerras
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[PATCH] ppc64: Formatting cleanups in arch/ppc64/kernel/ItLpQueue.c 



Just formatting cleanups:
 * rename some "nextLpEvent" variables to just "event"
 * make code fit in 80 columns
 * use brackets around if/else
 * use a temporary to make hvlpevent_clear_valid clearer

Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Acked-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 38fcdcfe

arch/ppc64/kernel/ItLpQueue.c

+41 −31
Original line number Diff line number Diff line
@@ -74,24 +74,27 @@ unsigned long ItLpQueueInProcess = 0; 


static struct HvLpEvent * get_next_hvlpevent(void)

{

	struct HvLpEvent * nextLpEvent =

		(struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;

	if (nextLpEvent->xFlags.xValid) {

	struct HvLpEvent * event;

	event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;



	if (event->xFlags.xValid) {

		/* rmb() needed only for weakly consistent machines (regatta) */

		rmb();

		/* Set pointer to next potential event */

		hvlpevent_queue.xSlicCurEventPtr += ((nextLpEvent->xSizeMinus1 +

				      LpEventAlign) /

				      LpEventAlign) *

				      LpEventAlign;

		hvlpevent_queue.xSlicCurEventPtr += ((event->xSizeMinus1 +

				LpEventAlign) / LpEventAlign) * LpEventAlign;



		/* Wrap to beginning if no room at end */

		if (hvlpevent_queue.xSlicCurEventPtr > hvlpevent_queue.xSlicLastValidEventPtr)

			hvlpevent_queue.xSlicCurEventPtr = hvlpevent_queue.xSlicEventStackPtr;

		if (hvlpevent_queue.xSlicCurEventPtr >

				hvlpevent_queue.xSlicLastValidEventPtr) {

			hvlpevent_queue.xSlicCurEventPtr =

				hvlpevent_queue.xSlicEventStackPtr;

		}

	} else {

		event = NULL;

	}

	else

		nextLpEvent = NULL;



	return nextLpEvent;

	return event;

}



static unsigned long spread_lpevents = NR_CPUS;
@@ -104,34 +107,41 @@ int hvlpevent_is_pending(void) 
		return 0;



	next_event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;

	return next_event->xFlags.xValid | hvlpevent_queue.xPlicOverflowIntPending;



	return next_event->xFlags.xValid |

		hvlpevent_queue.xPlicOverflowIntPending;

}



static void hvlpevent_clear_valid(struct HvLpEvent * event)

{

	/* Clear the valid bit of the event

	 * Also clear bits within this event that might

	 * look like valid bits (on 64-byte boundaries)

	/* Tell the Hypervisor that we're done with this event.

	 * Also clear bits within this event that might look like valid bits.

	 * ie. on 64-byte boundaries.

	 */

	struct HvLpEvent *tmp;

	unsigned extra = ((event->xSizeMinus1 + LpEventAlign) /

						 LpEventAlign) - 1;



	switch (extra) {

	case 3:

	   ((struct HvLpEvent*)((char*)event+3*LpEventAlign))->xFlags.xValid=0;

		tmp = (struct HvLpEvent*)((char*)event + 3 * LpEventAlign);

		tmp->xFlags.xValid = 0;

	case 2:

	   ((struct HvLpEvent*)((char*)event+2*LpEventAlign))->xFlags.xValid=0;

		tmp = (struct HvLpEvent*)((char*)event + 2 * LpEventAlign);

		tmp->xFlags.xValid = 0;

	case 1:

	   ((struct HvLpEvent*)((char*)event+1*LpEventAlign))->xFlags.xValid=0;

	case 0:

		;

		tmp = (struct HvLpEvent*)((char*)event + 1 * LpEventAlign);

		tmp->xFlags.xValid = 0;

	}



	mb();



	event->xFlags.xValid = 0;

}



void process_hvlpevents(struct pt_regs *regs)

{

	struct HvLpEvent * nextLpEvent;

	struct HvLpEvent * event;



	/* If we have recursed, just return */

	if ( !set_inUse() )
@@ -143,8 +153,8 @@ void process_hvlpevents(struct pt_regs *regs) 
		BUG();



	for (;;) {

		nextLpEvent = get_next_hvlpevent();

		if (nextLpEvent) {

		event = get_next_hvlpevent();

		if (event) {

			/* Call appropriate handler here, passing

			 * a pointer to the LpEvent.  The handler

			 * must make a copy of the LpEvent if it
@@ -158,15 +168,15 @@ void process_hvlpevents(struct pt_regs *regs) 
			 * registered for, so no type check is necessary

			 * here!

			 */

			if (nextLpEvent->xType < HvLpEvent_Type_NumTypes)

				__get_cpu_var(hvlpevent_counts)[nextLpEvent->xType]++;

			if (nextLpEvent->xType < HvLpEvent_Type_NumTypes &&

					lpEventHandler[nextLpEvent->xType])

				lpEventHandler[nextLpEvent->xType](nextLpEvent, regs);

			if (event->xType < HvLpEvent_Type_NumTypes)

				__get_cpu_var(hvlpevent_counts)[event->xType]++;

			if (event->xType < HvLpEvent_Type_NumTypes &&

					lpEventHandler[event->xType])

				lpEventHandler[event->xType](event, regs);

			else

				printk(KERN_INFO "Unexpected Lp Event type=%d\n", nextLpEvent->xType );

				printk(KERN_INFO "Unexpected Lp Event type=%d\n", event->xType );



			hvlpevent_clear_valid(nextLpEvent);

			hvlpevent_clear_valid(event);

		} else if (hvlpevent_queue.xPlicOverflowIntPending)

			/*

			 * No more valid events. If overflow events are