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Although KNL does support C1,C6,PC2,PC3,PC6 states, the patch only
supports C6,PC2,PC3,PC6, because there is no counter for C1.

C6 residency counter MSR on KNL has a different address than other
platforms which is handled as a new quirk flag.
Signed-off-by: Lukasz Odzioba <lukasz.odzioba@intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: bp@suse.de
Cc: dave.hansen@linux.intel.com
Cc: kan.liang@intel.com
Link: http://lkml.kernel.org/r/1475598386-19597-1-git-send-email-lukasz.odzioba@intel.com

Signed-off-by: Ingo Molnar <mingo@kernel.org>