!317 AMD: Fix allmodconfig build issue in amd perf uncore module.

Merge Pull Request from: @haochengxie 
 
Fix allmodconfig compile issue, the error log is as below：
ERROR: ! modpost:"cpu_llc_id" [arch/x86/events/amd/amd-uncore.ko] undefined! 
 
Link:https://gitee.com/openeuler/kernel/pulls/317 
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com> 
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> 

arch/x86/events/amd/uncore.c

@@ -12,11 +12,11 @@
 #include <linux/init.h>
 #include <linux/cpu.h>
 #include <linux/cpumask.h>
+#include <linux/cpufeature.h>
+#include <linux/smp.h>
 
-#include <asm/cpufeature.h>
 #include <asm/perf_event.h>
 #include <asm/msr.h>
-#include <asm/smp.h>
 
 #define NUM_COUNTERS_NB		4
 #define NUM_COUNTERS_L2		4
@@ -537,7 +537,7 @@ static int amd_uncore_cpu_starting(unsigned int cpu)
 
 	if (amd_uncore_llc) {
 		uncore = *per_cpu_ptr(amd_uncore_llc, cpu);
-		uncore->id = per_cpu(cpu_llc_id, cpu);
+		uncore->id = get_llc_id(cpu);
 
 		uncore = amd_uncore_find_online_sibling(uncore, amd_uncore_llc);
 		*per_cpu_ptr(amd_uncore_llc, cpu) = uncore;
@@ -755,11 +755,9 @@ static int __init amd_uncore_init(void)
 fail_llc:
 	if (boot_cpu_has(X86_FEATURE_PERFCTR_NB))
 		perf_pmu_unregister(&amd_nb_pmu);
-	if (amd_uncore_llc)
-		free_percpu(amd_uncore_llc);
+	free_percpu(amd_uncore_llc);
 fail_nb:
-	if (amd_uncore_nb)
-		free_percpu(amd_uncore_nb);
+	free_percpu(amd_uncore_nb);
 
 	return ret;
 }

arch/x86/include/asm/processor.h

@@ -829,6 +829,8 @@ extern int set_tsc_mode(unsigned int val);
 
 DECLARE_PER_CPU(u64, msr_misc_features_shadow);
 
+extern u16 get_llc_id(unsigned int cpu);
+
 #ifdef CONFIG_CPU_SUP_AMD
 extern u16 amd_get_nb_id(int cpu);
 extern u32 amd_get_nodes_per_socket(void);

arch/x86/kernel/cpu/amd.c

@@ -445,7 +445,7 @@ static void srat_detect_node(struct cpuinfo_x86 *c)
 
 	node = numa_cpu_node(cpu);
 	if (node == NUMA_NO_NODE)
-		node = per_cpu(cpu_llc_id, cpu);
+		node = get_llc_id(cpu);
 
 	/*
 	 * On multi-fabric platform (e.g. Numascale NumaChip) a

arch/x86/kernel/cpu/common.c

@@ -79,6 +79,12 @@ EXPORT_SYMBOL(smp_num_siblings);
 /* Last level cache ID of each logical CPU */
 DEFINE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id) = BAD_APICID;
 
+u16 get_llc_id(unsigned int cpu)
+{
+	return per_cpu(cpu_llc_id, cpu);
+}
+EXPORT_SYMBOL_GPL(get_llc_id);
+
 /* correctly size the local cpu masks */
 void __init setup_cpu_local_masks(void)
 {