RE: [RFC][PATCH 0/7] cpufreq / sched: cpufreq_update_util() flags and iowait boosting

[Doug Smythies]

On 2016.07.31 16:32 Rafael J. Wysocki wrote:

> Hi,
>
> Admittedly, this hasn't been tested yet, so no promises and you have been
> warned.  It builds, though (on x86-64 at least).

It would not build for me until I changed the kernel configuration file like so:

$ scripts/diffconfig .config .config_rjw_b_2
 CPU_FREQ_GOV_SCHEDUTIL m -> y

(the above is actually backwards, it is "y" that works.)

Otherwise I got:

Kernel: arch/x86/boot/bzImage is ready  (#86)
  MODPOST 3318 modules
ERROR: "dl_bw_cpus" [kernel/sched/cpufreq_schedutil.ko] undefined!
ERROR: "dl_bw_of" [kernel/sched/cpufreq_schedutil.ko] undefined!
ERROR: "runqueues" [kernel/sched/cpufreq_schedutil.ko] undefined!
scripts/Makefile.modpost:91: recipe for target '__modpost' failed
make[4]: *** [__modpost] Error 1
Makefile:1186: recipe for target 'modules' failed

... Doug