Subject: linux-next: build failure after merge of the idle tree

From: Stephen Rothwell <[email-masked]>
Date: Mon, 30 Mar 2015 12:43:53 +1100

Hi Len,

After merging the idle tree, today's linux-next build (x86_64
allmodconfig) failed like this:

In file included from arch/x86/include/asm/msr.h:131:0,
                 from arch/x86/include/asm/processor.h:20,
                 from arch/x86/include/asm/thread_info.h:23,
                 from include/linux/thread_info.h:54,
                 from arch/x86/include/asm/preempt.h:6,
                 from include/linux/preempt.h:18,
                 from include/linux/smp.h:55,
                 from include/linux/kernel_stat.h:4,
                 from drivers/cpufreq/intel_pstate.c:14:
drivers/cpufreq/intel_pstate.c: In function 'core_get_turbo_pstate':
drivers/cpufreq/intel_pstate.c:593:9: error: 'MSR_NHM_TURBO_RATIO_LIMIT' undeclared (first use in this function)
  rdmsrl(MSR_NHM_TURBO_RATIO_LIMIT, value);
         ^
arch/x86/include/asm/paravirt.h:153:26: note: in definition of macro 'rdmsrl'
  val = paravirt_read_msr(msr, &_err); \
                          ^
drivers/cpufreq/intel_pstate.c:593:9: note: each undeclared identifier is reported only once for each function it appears in
  rdmsrl(MSR_NHM_TURBO_RATIO_LIMIT, value);
         ^
arch/x86/include/asm/paravirt.h:153:26: note: in definition of macro 'rdmsrl'
  val = paravirt_read_msr(msr, &_err); \
                          ^

Caused by commit ce62fbaf893c ("tools/power turbostat: define and dump
MSR_TURBO_RATIO_LIMIT2").  Grep is your friend ...

I have used the idle tree from next-20150327 for today.

-- 
Cheers,
Stephen Rothwell                    [email-masked]