perf/x86/intel/cqm: Use proper data types

'int' is really not a proper data type for an MSR. Use u32 to make it
clear that we are dealing with a 32-bit unsigned hardware value.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Matt Fleming <matt.fleming@intel.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Cc: Will Auld <will.auld@intel.com>
Link: http://lkml.kernel.org/r/20150518235149.919350144@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/kernel/cpu/perf_event_intel_cqm.c

@@ -18,7 +18,7 @@ static unsigned int cqm_l3_scale; /* supposedly cacheline size */
 
 struct intel_cqm_state {
 	raw_spinlock_t		lock;
-	int			rmid;
+	u32			rmid;
 	int			cnt;
 };
 
@@ -962,7 +962,7 @@ static u64 intel_cqm_event_count(struct perf_event *event)
 static void intel_cqm_event_start(struct perf_event *event, int mode)
 {
 	struct intel_cqm_state *state = this_cpu_ptr(&cqm_state);
-	unsigned int rmid = event->hw.cqm_rmid;
+	u32 rmid = event->hw.cqm_rmid;
 	unsigned long flags;
 
 	if (!(event->hw.cqm_state & PERF_HES_STOPPED))

include/linux/perf_event.h

@@ -120,7 +120,7 @@ struct hw_perf_event {
 		};
 		struct { /* intel_cqm */
 			int			cqm_state;
-			int			cqm_rmid;
+			u32			cqm_rmid;
 			struct list_head	cqm_events_entry;
 			struct list_head	cqm_groups_entry;
 			struct list_head	cqm_group_entry;