`common_drivers/drivers/debug/sched.c:480:26`: error: 'sysctl_sched_latency' undeclared (first use in this function)

[ColorfulRhino]

Hello!

When building khadas-vims-5.15.y https://github.com/khadas/linux/tree/khadas-vims-5.15.y kernel with EXPERT=n DEBUG_KERNEL=n in the kernel config, the kernel build fails when using the common drivers. This is the error message:

common_drivers/drivers/debug/sched.c: In function 'aml_place_entity':
   common_drivers/drivers/debug/sched.c:480:26: error: 'sysctl_sched_latency' undeclared (first use in this function); did you mean 'sysctl_sched_features'?
     480 |                 thresh = sysctl_sched_latency / sched_place_entity_factor;
         |                          ^~~~~~~~~~~~~~~~~~~~
         |                          sysctl_sched_features
   common_drivers/drivers/debug/sched.c:480:26: note: each undeclared identifier is reported only once for each function it appears in
   common_drivers/drivers/debug/sched.c: At top level:
   cc1: note: unrecognized command-line option '-Wno-enum-int-mismatch' may have been intended to silence earlier diagnostics
   make[3]: *** [scripts/Makefile.build:287: common_drivers/drivers/debug/sched.o] Error 1
   make[3]: *** Waiting for unfinished jobs....

Build log: https://paste.armbian.com/vayopihuba

Issue seems to be here:

common_drivers/drivers/debug/sched.c

Line 480 in 514e424

thresh = sysctl_sched_latency / sched_place_entity_factor;

error: 'sysctl_sched_latency' undeclared (first use in this function)