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perf/x86/msr: Fix the MSR driver build 

The new MSR PMU driver made use of rdtsc() which does not exist (yet) in
this tree:

  arch/x86/kernel/cpu/perf_event_msr.c:91:3: error: implicit declaration of function 'rdtsc'

Use the old rdtscll() primitive for now.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-08-21 08:14:46 +02:00
parent dd2281be03
commit 82819ffb42
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/perf_event_msr.c
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@ -145,7 +145,7 @@ static inline u64 msr_read_counter(struct perf_event *event)
if (event->hw.event_base)
rdmsrl(event->hw.event_base, now);
else
now = rdtsc();
rdtscll(now);
return now;
}