kernel build errors

  CC      block/partitions/msdos.o
In file included from ../kernel/sched/core.c:8:
../kernel/sched/sched.h:2215:7: error: use of undeclared identifier 'walt_disabled'
        if (!walt_disabled && sysctl_sched_use_walt_cpu_util) {
             ^
../kernel/sched/sched.h:2215:24: error: use of undeclared identifier 'sysctl_sched_use_walt_cpu_util'
        if (!walt_disabled && sysctl_sched_use_walt_cpu_util) {
                              ^
../kernel/sched/sched.h:2232:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2256:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2269:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2282:1: error: function declared in block scope cannot have 'static' storage class
static inline void double_rq_lock(struct rq *rq1, struct rq *rq2);
^
../kernel/sched/sched.h:2296:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2338:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2350:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2356:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2365:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2374:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2391:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2416:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2516:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2555:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2595:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2645:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2683:1: error: function definition is not allowed here
{
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
  CC      crypto/asymmetric_keys/public_key.o
In file included from ../kernel/sched/loadavg.c:9:
../kernel/sched/sched.h:2215:7: error: use of undeclared identifier 'walt_disabled'
        if (!walt_disabled && sysctl_sched_use_walt_cpu_util) {
             ^
../kernel/sched/sched.h:2215:24: error: use of undeclared identifier 'sysctl_sched_use_walt_cpu_util'
        if (!walt_disabled && sysctl_sched_use_walt_cpu_util) {
                              ^
../kernel/sched/sched.h:2232:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2256:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2269:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2282:1: error: function declared in block scope cannot have 'static' storage class
static inline void double_rq_lock(struct rq *rq1, struct rq *rq2);
^
../kernel/sched/sched.h:2296:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2338:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2350:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2356:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2365:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2374:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2391:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2416:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2516:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2555:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2595:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2645:1: error: function definition is not allowed here
{
^
../kernel/sched/sched.h:2683:1: error: function definition is not allowed here
{
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
../scripts/Makefile.build:338: recipe for target 'kernel/sched/loadavg.o' failed
make[3]: *** [kernel/sched/loadavg.o] Error 1
make[3]: *** Waiting for unfinished jobs....
  ASN.1   crypto/asymmetric_keys/x509.asn1.c
  ASN.1   crypto/asymmetric_keys/x509_akid.asn1.c
  CC      crypto/asymmetric_keys/x509_public_key.o
20 errors generated.
../scripts/Makefile.build:338: recipe for target 'kernel/sched/core.o' failed
make[3]: *** [kernel/sched/core.o] Error 1
../scripts/Makefile.build:642: recipe for target 'kernel/sched' failed
make[2]: *** [kernel/sched] Error 2
/home/a/XiaomiKernel/android_kernel_xiaomi_sm8250/Makefile:1212: recipe for target 'kernel' failed
make[1]: *** [kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
  ASN.1   crypto/asymmetric_keys/pkcs7.asn1.c
  CC      crypto/asymmetric_keys/pkcs7_trust.o
  CC      block/partitions/efi.o
  CC      crypto/asymmetric_keys/pkcs7_verify.o