!302 sched: programmable: fix build error of bpf_topology

Merge Pull Request from: @barry19901226 
 
make ARCH="arm64" CROSS_COMPILE="aarch64-linux-gnu-",
gcc complained as follow:

In file included from ./arch/arm64/include/asm/topology.h:17:0,
                 from ./arch/arm64/include/asm/numa.h:5,
                 from ./arch/arm64/include/asm/mmzone.h:7,
                 from ./include/linux/mmzone.h:1025,
                 from ./include/linux/gfp.h:6,
                 from ./include/linux/umh.h:4,
                 from ./include/linux/kmod.h:9,
                 from ./include/linux/module.h:16,
                 from ./include/linux/bpf.h:20,
                 from kernel/sched/bpf_topology.c:15:
kernel/sched/bpf_topology.c: In function ‘bpf_update_cpu_topology’:
./include/linux/arch_topology.h:64:62: error: ‘struct bpf_cpu_topology’ has no member named ‘package_id’; did you mean ‘package_cpus’?
 #define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)

kernel/sched/bpf_topology.c:57:20: warning: ‘bpf_cpu_topology_ids’ defined but not used [-Wunused-variable]
 BTF_ID_LIST_SINGLE(bpf_cpu_topology_ids, struct, bpf_cpu_topology)

To fix this error, change local variable cpu_topology to bpf_cpu_topology and
delete the definition of bpf_cpu_topology_ids. 
 
Link:https://gitee.com/openeuler/kernel/pulls/302 
Reviewed-by: Zucheng Zheng <zhengzucheng@huawei.com> 
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com> 
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> 

include/linux/bpf_topology.h

@@ -36,7 +36,7 @@ struct bpf_cpumask_info {
 	unsigned int nums_possible_cpus;
 	unsigned int nums_active_cpus;
 	unsigned int nums_isolate_cpus;
-	unsigned int nr_cpu_ids;
+	unsigned int bpf_nr_cpu_ids;
 	unsigned int bpf_nr_cpumask_bits;
 	struct cpumask cpu_possible_cpumask;
 	struct cpumask cpu_active_cpumask;

kernel/sched/bpf_topology.c

@@ -20,20 +20,20 @@
 #include <linux/bpf_topology.h>
 #include <linux/sched/isolation.h>
 
-static void bpf_update_cpu_topology(struct bpf_cpu_topology *cpu_topology, int cpu)
+static void bpf_update_cpu_topology(struct bpf_cpu_topology *bpf_cpu_topology, int cpu)
 {
-	cpu_topology->cpu = cpu;
-	cpu_topology->core_id = topology_core_id(cpu);
-	cpu_topology->cluster_id = topology_cluster_id(cpu);
-	cpu_topology->die_id = topology_die_id(cpu);
-	cpu_topology->physical_package_id = topology_physical_package_id(cpu);
-	cpu_topology->numa_node = cpu_to_node(cpu);
-	cpumask_copy(&cpu_topology->thread_siblings, topology_sibling_cpumask(cpu));
-	cpumask_copy(&cpu_topology->core_siblings, topology_core_cpumask(cpu));
-	cpumask_copy(&cpu_topology->cluster_cpus, topology_cluster_cpumask(cpu));
-	cpumask_copy(&cpu_topology->die_cpus, topology_die_cpumask(cpu));
-	cpumask_copy(&cpu_topology->package_cpus, topology_core_cpumask(cpu));
-	cpumask_copy(&cpu_topology->node_cpu_lists, cpumask_of_node(cpu_to_node(cpu)));
+	bpf_cpu_topology->cpu = cpu;
+	bpf_cpu_topology->core_id = topology_core_id(cpu);
+	bpf_cpu_topology->cluster_id = topology_cluster_id(cpu);
+	bpf_cpu_topology->die_id = topology_die_id(cpu);
+	bpf_cpu_topology->physical_package_id = topology_physical_package_id(cpu);
+	bpf_cpu_topology->numa_node = cpu_to_node(cpu);
+	cpumask_copy(&bpf_cpu_topology->thread_siblings, topology_sibling_cpumask(cpu));
+	cpumask_copy(&bpf_cpu_topology->core_siblings, topology_core_cpumask(cpu));
+	cpumask_copy(&bpf_cpu_topology->cluster_cpus, topology_cluster_cpumask(cpu));
+	cpumask_copy(&bpf_cpu_topology->die_cpus, topology_die_cpumask(cpu));
+	cpumask_copy(&bpf_cpu_topology->package_cpus, topology_core_cpumask(cpu));
+	cpumask_copy(&bpf_cpu_topology->node_cpu_lists, cpumask_of_node(cpu_to_node(cpu)));
 }
 
 BPF_CALL_1(bpf_init_cpu_topology, struct bpf_map *, map)
@@ -54,8 +54,6 @@ BPF_CALL_1(bpf_init_cpu_topology, struct bpf_map *, map)
 	return 0;
 }
 
-BTF_ID_LIST_SINGLE(bpf_cpu_topology_ids, struct, bpf_cpu_topology)
-
 const struct bpf_func_proto bpf_init_cpu_topology_proto = {
 	.func		= bpf_init_cpu_topology,
 	.gpl_only	= false,
@@ -74,7 +72,7 @@ BPF_CALL_2(bpf_get_cpumask_info, struct bpf_map *, map, struct bpf_cpumask_info
 	cpus->nums_possible_cpus = num_possible_cpus();
 	cpus->nums_active_cpus = num_active_cpus();
 	cpus->nums_isolate_cpus = cpumask_weight(&cpus->cpu_isolate_cpumask);
-	cpus->nr_cpu_ids = nr_cpu_ids;
+	cpus->bpf_nr_cpu_ids = nr_cpu_ids;
 	cpus->bpf_nr_cpumask_bits = nr_cpumask_bits;
 
 	return 0;

tools/lib/bpf/libbpf_sched.h

@@ -310,7 +310,7 @@ static __always_inline int libbpf_nr_cpus_ids(void)
 		return -1;
 
 	bpf_get_cpumask_info(&map_cpumask_info, cpus);
-	return getVal(cpus->nr_cpu_ids);
+	return getVal(cpus->bpf_nr_cpu_ids);
 }
 
 static __always_inline int libbpf_nr_cpumask_bits(void)