[PATCH] ppc64: Move iSeries_idle() into iSeries_setup.c

Move iSeries_idle() into iSeries_setup.c, no one else needs to know about it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/kernel/iSeries_setup.c

@@ -834,6 +834,87 @@ static int __init iSeries_src_init(void)
 
 late_initcall(iSeries_src_init);
 
+static unsigned long maxYieldTime = 0;
+static unsigned long minYieldTime = 0xffffffffffffffffUL;
+
+static inline void process_iSeries_events(void)
+{
+	asm volatile ("li 0,0x5555; sc" : : : "r0", "r3");
+}
+
+static void yield_shared_processor(void)
+{
+	unsigned long tb;
+	unsigned long yieldTime;
+
+	HvCall_setEnabledInterrupts(HvCall_MaskIPI |
+				    HvCall_MaskLpEvent |
+				    HvCall_MaskLpProd |
+				    HvCall_MaskTimeout);
+
+	tb = get_tb();
+	/* Compute future tb value when yield should expire */
+	HvCall_yieldProcessor(HvCall_YieldTimed, tb+tb_ticks_per_jiffy);
+
+	yieldTime = get_tb() - tb;
+	if (yieldTime > maxYieldTime)
+		maxYieldTime = yieldTime;
+
+	if (yieldTime < minYieldTime)
+		minYieldTime = yieldTime;
+
+	/*
+	 * The decrementer stops during the yield.  Force a fake decrementer
+	 * here and let the timer_interrupt code sort out the actual time.
+	 */
+	get_paca()->lppaca.int_dword.fields.decr_int = 1;
+	process_iSeries_events();
+}
+
+static int iSeries_idle(void)
+{
+	struct paca_struct *lpaca;
+	long oldval;
+
+	/* ensure iSeries run light will be out when idle */
+	ppc64_runlatch_off();
+
+	lpaca = get_paca();
+
+	while (1) {
+		if (lpaca->lppaca.shared_proc) {
+			if (hvlpevent_is_pending())
+				process_iSeries_events();
+			if (!need_resched())
+				yield_shared_processor();
+		} else {
+			oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);
+
+			if (!oldval) {
+				set_thread_flag(TIF_POLLING_NRFLAG);
+
+				while (!need_resched()) {
+					HMT_medium();
+					if (hvlpevent_is_pending())
+						process_iSeries_events();
+					HMT_low();
+				}
+
+				HMT_medium();
+				clear_thread_flag(TIF_POLLING_NRFLAG);
+			} else {
+				set_need_resched();
+			}
+		}
+
+		ppc64_runlatch_on();
+		schedule();
+		ppc64_runlatch_off();
+	}
+
+	return 0;
+}
+
 #ifndef CONFIG_PCI
 void __init iSeries_init_IRQ(void) { }
 #endif

arch/ppc64/kernel/idle.c

@@ -39,90 +39,6 @@ extern void power4_idle(void);
 
 static int (*idle_loop)(void);
 
-#ifdef CONFIG_PPC_ISERIES
-static unsigned long maxYieldTime = 0;
-static unsigned long minYieldTime = 0xffffffffffffffffUL;
-
-static inline void process_iSeries_events(void)
-{
-	asm volatile ("li 0,0x5555; sc" : : : "r0", "r3");
-}
-
-static void yield_shared_processor(void)
-{
-	unsigned long tb;
-	unsigned long yieldTime;
-
-	HvCall_setEnabledInterrupts(HvCall_MaskIPI |
-				    HvCall_MaskLpEvent |
-				    HvCall_MaskLpProd |
-				    HvCall_MaskTimeout);
-
-	tb = get_tb();
-	/* Compute future tb value when yield should expire */
-	HvCall_yieldProcessor(HvCall_YieldTimed, tb+tb_ticks_per_jiffy);
-
-	yieldTime = get_tb() - tb;
-	if (yieldTime > maxYieldTime)
-		maxYieldTime = yieldTime;
-
-	if (yieldTime < minYieldTime)
-		minYieldTime = yieldTime;
-	
-	/*
-	 * The decrementer stops during the yield.  Force a fake decrementer
-	 * here and let the timer_interrupt code sort out the actual time.
-	 */
-	get_paca()->lppaca.int_dword.fields.decr_int = 1;
-	process_iSeries_events();
-}
-
-static int iSeries_idle(void)
-{
-	struct paca_struct *lpaca;
-	long oldval;
-
-	/* ensure iSeries run light will be out when idle */
-	ppc64_runlatch_off();
-
-	lpaca = get_paca();
-
-	while (1) {
-		if (lpaca->lppaca.shared_proc) {
-			if (hvlpevent_is_pending())
-				process_iSeries_events();
-			if (!need_resched())
-				yield_shared_processor();
-		} else {
-			oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);
-
-			if (!oldval) {
-				set_thread_flag(TIF_POLLING_NRFLAG);
-
-				while (!need_resched()) {
-					HMT_medium();
-					if (hvlpevent_is_pending())
-						process_iSeries_events();
-					HMT_low();
-				}
-
-				HMT_medium();
-				clear_thread_flag(TIF_POLLING_NRFLAG);
-			} else {
-				set_need_resched();
-			}
-		}
-
-		ppc64_runlatch_on();
-		schedule();
-		ppc64_runlatch_off();
-	}
-
-	return 0;
-}
-
-#else
-
 int default_idle(void)
 {
 	long oldval;
@@ -305,8 +221,6 @@ int native_idle(void)
 	return 0;
 }
 
-#endif /* CONFIG_PPC_ISERIES */
-
 void cpu_idle(void)
 {
 	BUG_ON(NULL == ppc_md.idle_loop);