[PATCH 5/10] ppc64: Make smp_release_cpus() callable on iSeries

[Michael Ellerman]

We don't need to call smp_release_cpus() on iSeries but it's harmless
if we do and it removes another #ifdef ISERIES.

Signed-off-by: Michael Ellerman <michael at ellerman.id.au>
---

 arch/ppc64/kernel/head.S  |    6 ++++--
 arch/ppc64/kernel/setup.c |    8 ++++----
 2 files changed, 8 insertions(+), 6 deletions(-)

Index: work/arch/ppc64/kernel/head.S
===================================================================
--- work.orig/arch/ppc64/kernel/head.S
+++ work/arch/ppc64/kernel/head.S
@@ -1952,20 +1952,22 @@ _GLOBAL(hmt_start_secondary)
 	blr
 #endif
 
-#if defined(CONFIG_KEXEC) || (defined(CONFIG_SMP) && !defined(CONFIG_PPC_ISERIES))
+#if defined(CONFIG_KEXEC) || defined(CONFIG_SMP)
 _GLOBAL(smp_release_cpus)
 	/* All secondary cpus are spinning on a common
 	 * spinloop, release them all now so they can start
 	 * to spin on their individual paca spinloops.
 	 * For non SMP kernels, the secondary cpus never
 	 * get out of the common spinloop.
+	 * XXX This does nothing useful on iSeries, secondaries are
+	 * already waiting on their paca.
 	 */
 	li	r3,1
 	LOADADDR(r5,__secondary_hold_spinloop)
 	std	r3,0(r5)
 	sync
 	blr
-#endif /* CONFIG_SMP && !CONFIG_PPC_ISERIES */
+#endif /* CONFIG_SMP */
 
 
 /*
Index: work/arch/ppc64/kernel/setup.c
===================================================================
--- work.orig/arch/ppc64/kernel/setup.c
+++ work/arch/ppc64/kernel/setup.c
@@ -182,7 +182,7 @@ void __init disable_early_printk(void)
 	early_console_initialized = 0;
 }
 
-#if defined(CONFIG_PPC_MULTIPLATFORM) && defined(CONFIG_SMP)
+#ifdef CONFIG_SMP
 
 static int smt_enabled_cmdline;
 
@@ -335,7 +335,7 @@ static void __init setup_cpu_maps(void)
 
 	systemcfg->processorCount = num_present_cpus();
 }
-#endif /* defined(CONFIG_PPC_MULTIPLATFORM) && defined(CONFIG_SMP) */
+#endif /* CONFIG_SMP */
 
 
 #ifdef CONFIG_PPC_MULTIPLATFORM
@@ -645,7 +645,7 @@ void __init setup_system(void)
 	parse_early_param();
 #endif /* !CONFIG_PPC_ISERIES */
 
-#if defined(CONFIG_SMP) && !defined(CONFIG_PPC_ISERIES)
+#ifdef CONFIG_SMP
 	/*
 	 * iSeries has already initialized the cpu maps at this point.
 	 */
@@ -655,7 +655,7 @@ void __init setup_system(void)
 	 * we can map physical -> logical CPU ids
 	 */
 	smp_release_cpus();
-#endif /* defined(CONFIG_SMP) && !defined(CONFIG_PPC_ISERIES) */
+#endif
 
 	printk("Starting Linux PPC64 %s\n", UTS_RELEASE);