Description of problem:

Can't compile kernel with CONFIG_SCHEDSTATS turned on

Version-Release number of selected component (if applicable): 
from source package

kernel-2.6.9-67.EL.src

How reproducible:
very

Steps to Reproduce:
1. edit /usr/src/redhat/SOURCES/kernel-2.6.9-x86_64*.config
2. change CONFIG_SCHEDSTAT=y 
3. rpmbuild --target=x86_64 -ba /usr/src/redhat/SPECS/kernel-2.6.spec
  
Actual results:
kernel/sched.c: In function `load_balance_newidle':
kernel/sched.c:2228: error: structure has no member named `lb_balanced'
kernel/sched.c: At top level:
kernel/sched.c:3122: warning: `interruptible_sleep_on' is deprecated (declared
at kernel/sched.c:3110)
kernel/sched.c:3156: warning: `sleep_on_timeout' is deprecated (declared at
kernel/sched.c:3142)
make[1]: *** [kernel/sched.o] Error 1
make: *** [kernel] Error 2
make: *** Waiting for unfinished jobs....
arch/x86_64/kernel/mpparse.c: In function `MP_processor_info':
arch/x86_64/kernel/mpparse.c:178: warning: implicit declaration of function
`acpi_numa_setup_cpu'
arch/x86_64/kernel/mpparse.c: In function `MP_bus_info':
arch/x86_64/kernel/mpparse.c:186: warning: comparison is always false due to
limited range of data type
arch/x86_64/kernel/mpparse.c: In function `smp_read_mpc':
arch/x86_64/kernel/mpparse.c:363: warning: implicit declaration of function
`clustered_apic_check'
error: Bad exit status from /var/tmp/rpm-tmp.50548 (%build)


Expected results:

a compiled kernel with scheduler stats turned on

Additional info: