Re: PowerPC build fail

On Mon, Feb 27, 2017 at 09:38:13PM +1100, Michael Ellerman wrote:

Hi Tobin,

"Tobin C. Harding" [off-list ref] writes:

quoted

The current (2bfe01e) torvalds git tree fails to build on powerpc64. Build machine
is virtualized.

- Build error
arch/powerpc/kernel/time.c: In function ‘running_clock’:
arch/powerpc/kernel/time.c:712:25: error: implicit declaration of function ‘cputime_to_nsecs’
   return local_clock() - cputime_to_nsecs(kcpustat_this_cpu->cpustat[CPUTIME_STEAL]);
                          ^

...

quoted

If you think this can be fixed with the *little* kernel dev knowledge
I have please point me at a starting place and I will dig into it.

Thanks for trying to fix it.

You got unlucky and pulled Linus' tree just after a cleanup series was
merged, but before all the bugs had been shaken out.

Au contraire, I felt lucky to have bumped into a bug. I would like to
find more :)

Tobin