[PATCH] ppc64: Don't count number of events processed for caller

Currently we count the number of lpevents processed in 3 seperate places.

One of these counters is never read, so just remove it. This means
hvlpevent_queue_process() no longer needs to return the number of events
processed.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

5 files changed, 6 insertions, 14 deletions

diff --git a/arch/ppc64/kernel/ItLpQueue.c b/arch/ppc64/kernel/ItLpQueue.c
index a81e49b91af0..a849f6775ad6 100644
--- a/arch/ppc64/kernel/ItLpQueue.c
+++ b/arch/ppc64/kernel/ItLpQueue.c
@@ -127,14 +127,14 @@ static void hvlpevent_clear_valid( struct HvLpEvent * event )
         event->xFlags.xValid = 0;
 }
 
-unsigned process_hvlpevents(struct pt_regs *regs)
+void process_hvlpevents(struct pt_regs *regs)
 {
         unsigned numIntsProcessed = 0;
         struct HvLpEvent * nextLpEvent;
 
         /* If we have recursed, just return */
         if ( !set_inUse() )
-                return 0;
+                return;
         
         if (ItLpQueueInProcess == 0)
                 ItLpQueueInProcess = 1;
@@ -144,9 +144,6 @@ unsigned process_hvlpevents(struct pt_regs *regs)
         for (;;) {
                 nextLpEvent = get_next_hvlpevent();
                 if ( nextLpEvent ) {
-                        /* Count events to return to caller
-                         * and count processed events in hvlpevent_queue
-                         */
                         ++numIntsProcessed;
                         hvlpevent_queue.xLpIntCount++;
                         /* Call appropriate handler here, passing 
@@ -186,8 +183,6 @@ unsigned process_hvlpevents(struct pt_regs *regs)
         clear_inUse();
 
         get_paca()->lpevent_count += numIntsProcessed;
-
-        return numIntsProcessed;
 }
 
 static int set_spread_lpevents(char *str)
diff --git a/arch/ppc64/kernel/irq.c b/arch/ppc64/kernel/irq.c
index bd4b035af622..e79420bb72a5 100644
--- a/arch/ppc64/kernel/irq.c
+++ b/arch/ppc64/kernel/irq.c
@@ -66,7 +66,6 @@ EXPORT_SYMBOL(irq_desc);
 int distribute_irqs = 1;
 int __irq_offset_value;
 int ppc_spurious_interrupts;
-unsigned long lpevent_count;
 u64 ppc64_interrupt_controller;
 
 int show_interrupts(struct seq_file *p, void *v)
@@ -295,7 +294,7 @@ void do_IRQ(struct pt_regs *regs)
         }
 #endif /* CONFIG_SMP */
         if (hvlpevent_is_pending())
-                lpevent_count += process_hvlpevents(regs);
+                process_hvlpevents(regs);
 
         irq_exit();
 
diff --git a/arch/ppc64/kernel/mf.c b/arch/ppc64/kernel/mf.c
index 609bf1bda7b8..ef4a338ebd01 100644
--- a/arch/ppc64/kernel/mf.c
+++ b/arch/ppc64/kernel/mf.c
@@ -801,9 +801,8 @@ int mf_get_boot_rtc(struct rtc_time *tm)
                 return rc;
         /* We need to poll here as we are not yet taking interrupts */
         while (rtc_data.busy) {
-                extern unsigned long lpevent_count;
                 if (hvlpevent_is_pending())
-                        lpevent_count += process_hvlpevents(NULL);
+                        process_hvlpevents(NULL);
         }
         return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
 }
diff --git a/arch/ppc64/kernel/time.c b/arch/ppc64/kernel/time.c
index f9c18400ebf5..909462e1adea 100644
--- a/arch/ppc64/kernel/time.c
+++ b/arch/ppc64/kernel/time.c
@@ -99,7 +99,6 @@ unsigned long tb_to_ns_shift;
 struct gettimeofday_struct do_gtod;
 
 extern unsigned long wall_jiffies;
-extern unsigned long lpevent_count;
 extern int smp_tb_synchronized;
 
 extern struct timezone sys_tz;
@@ -368,7 +367,7 @@ int timer_interrupt(struct pt_regs * regs)
 
 #ifdef CONFIG_PPC_ISERIES
         if (hvlpevent_is_pending())
-                lpevent_count += process_hvlpevents(regs);
+                process_hvlpevents(regs);
 #endif
 
 /* collect purr register values often, for accurate calculations */
diff --git a/include/asm-ppc64/iSeries/ItLpQueue.h b/include/asm-ppc64/iSeries/ItLpQueue.h
index f0f24a39ff6d..6ba74c0d910b 100644
--- a/include/asm-ppc64/iSeries/ItLpQueue.h
+++ b/include/asm-ppc64/iSeries/ItLpQueue.h
@@ -77,7 +77,7 @@ struct hvlpevent_queue {
 extern struct hvlpevent_queue hvlpevent_queue;
 
 extern int hvlpevent_is_pending(void);
-extern unsigned process_hvlpevents(struct pt_regs *);
+extern void process_hvlpevents(struct pt_regs *);
 extern void setup_hvlpevent_queue(void);
 
 #endif /* _ITLPQUEUE_H */