[PATCH] ppc64: Fixup platforms for new ppc_md.idle

This patch fixes up iSeries, pSeries, pmac and maple to set the correct idle
function for each platform.

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>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/ppc64/kernel/pSeries_setup.c b/arch/ppc64/kernel/pSeries_setup.c
index 849ed9ba7856..3f3be8ae9351 100644
--- a/arch/ppc64/kernel/pSeries_setup.c
+++ b/arch/ppc64/kernel/pSeries_setup.c
@@ -19,6 +19,7 @@
 #undef DEBUG
 
 #include <linux/config.h>
+#include <linux/cpu.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
@@ -82,6 +83,9 @@ int fwnmi_active;  /* TRUE if an FWNMI handler is present */
 extern void pSeries_system_reset_exception(struct pt_regs *regs);
 extern int pSeries_machine_check_exception(struct pt_regs *regs);
 
+static int shared_idle(void);
+static int dedicated_idle(void);
+
 static volatile void __iomem * chrp_int_ack_special;
 struct mpic *pSeries_mpic;
 
@@ -229,6 +233,20 @@ static void __init pSeries_setup_arch(void)
 
         if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR)
                 vpa_init(boot_cpuid);
+
+        /* Choose an idle loop */
+        if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) {
+                if (get_paca()->lppaca.shared_proc) {
+                        printk(KERN_INFO "Using shared processor idle loop\n");
+                        ppc_md.idle_loop = shared_idle;
+                } else {
+                        printk(KERN_INFO "Using dedicated idle loop\n");
+                        ppc_md.idle_loop = dedicated_idle;
+                }
+        } else {
+                printk(KERN_INFO "Using default idle loop\n");
+                ppc_md.idle_loop = default_idle;
+        }
 }
 
 static int __init pSeries_init_panel(void)