x86/apic: Move apic_init_uniprocessor code

Move the code to a different place so we can make other functions
inline. Preparatory patch for further cleanups. No change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20150115211703.731329006@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 62 insertions, 63 deletions

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 3b4bdd5da12e..c681e9ba9e47 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1852,71 +1852,8 @@ void __init register_lapic_address(unsigned long address)
         }
 }
 
-/*
- * This initializes the IO-APIC and APIC hardware if this is
- * a UP kernel.
- */
 int apic_version[MAX_LOCAL_APIC];
 
-int __init APIC_init_uniprocessor(void)
-{
-        if (disable_apic) {
-                pr_info("Apic disabled\n");
-                return -1;
-        }
-#ifdef CONFIG_X86_64
-        if (!cpu_has_apic) {
-                disable_apic = 1;
-                pr_info("Apic disabled by BIOS\n");
-                return -1;
-        }
-#else
-        if (!smp_found_config && !cpu_has_apic)
-                return -1;
-
-        /*
-         * Complain if the BIOS pretends there is one.
-         */
-        if (!cpu_has_apic &&
-            APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
-                pr_err("BIOS bug, local APIC 0x%x not detected!...\n",
-                        boot_cpu_physical_apicid);
-                return -1;
-        }
-#endif
-
-        default_setup_apic_routing();
-
-        verify_local_APIC();
-        connect_bsp_APIC();
-
-#ifdef CONFIG_X86_64
-        apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid));
-#else
-        /*
-         * Hack: In case of kdump, after a crash, kernel might be booting
-         * on a cpu with non-zero lapic id. But boot_cpu_physical_apicid
-         * might be zero if read from MP tables. Get it from LAPIC.
-         */
-# ifdef CONFIG_CRASH_DUMP
-        boot_cpu_physical_apicid = read_apic_id();
-# endif
-#endif
-        physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
-        setup_local_APIC();
-
-        /* Enable IO-APICs before enabling error vector */
-        enable_IO_APIC();
-
-        bsp_end_local_APIC_setup();
-
-        if (smp_found_config)
-                setup_IO_APIC();
-
-        x86_init.timers.setup_percpu_clockev();
-        return 0;
-}
-
 /*
  * Local APIC interrupts
  */
@@ -2269,6 +2206,68 @@ void __init apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v))
 }
 
 /*
+ * This initializes the IO-APIC and APIC hardware if this is
+ * a UP kernel.
+ */
+int __init APIC_init_uniprocessor(void)
+{
+        if (disable_apic) {
+                pr_info("Apic disabled\n");
+                return -1;
+        }
+#ifdef CONFIG_X86_64
+        if (!cpu_has_apic) {
+                disable_apic = 1;
+                pr_info("Apic disabled by BIOS\n");
+                return -1;
+        }
+#else
+        if (!smp_found_config && !cpu_has_apic)
+                return -1;
+
+        /*
+         * Complain if the BIOS pretends there is one.
+         */
+        if (!cpu_has_apic &&
+            APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
+                pr_err("BIOS bug, local APIC 0x%x not detected!...\n",
+                        boot_cpu_physical_apicid);
+                return -1;
+        }
+#endif
+
+        default_setup_apic_routing();
+
+        verify_local_APIC();
+        connect_bsp_APIC();
+
+#ifdef CONFIG_X86_64
+        apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid));
+#else
+        /*
+         * Hack: In case of kdump, after a crash, kernel might be booting
+         * on a cpu with non-zero lapic id. But boot_cpu_physical_apicid
+         * might be zero if read from MP tables. Get it from LAPIC.
+         */
+# ifdef CONFIG_CRASH_DUMP
+        boot_cpu_physical_apicid = read_apic_id();
+# endif
+#endif
+        physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
+        setup_local_APIC();
+
+        if (smp_found_config)
+                enable_IO_APIC();
+
+        bsp_end_local_APIC_setup();
+
+        setup_IO_APIC();
+
+        x86_init.timers.setup_percpu_clockev();
+        return 0;
+}
+
+/*
  * Power management
  */
 #ifdef CONFIG_PM