perf_counter, x86: consistent use of type int for counter index

The type of counter index is sometimes implemented as unsigned
int. This patch changes this to have a consistent usage of int.

[ Impact: cleanup ]
Signed-off-by: NRobert Richter <robert.richter@amd.com>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1241002046-8832-21-git-send-email-robert.richter@amd.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/perf_counter.c

@@ -459,7 +459,7 @@ static void hw_perf_disable(int idx, u64 config)
 
 static inline void
 __pmc_fixed_disable(struct perf_counter *counter,
-		    struct hw_perf_counter *hwc, unsigned int __idx)
+		    struct hw_perf_counter *hwc, int __idx)
 {
 	int idx = __idx - X86_PMC_IDX_FIXED;
 	u64 ctrl_val, mask;
@@ -474,7 +474,7 @@ __pmc_fixed_disable(struct perf_counter *counter,
 
 static inline void
 __x86_pmu_disable(struct perf_counter *counter,
-		  struct hw_perf_counter *hwc, unsigned int idx)
+		  struct hw_perf_counter *hwc, int idx)
 {
 	if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL))
 		__pmc_fixed_disable(counter, hwc, idx);
@@ -523,7 +523,7 @@ x86_perf_counter_set_period(struct perf_counter *counter,
 
 static inline void
 __pmc_fixed_enable(struct perf_counter *counter,
-		   struct hw_perf_counter *hwc, unsigned int __idx)
+		   struct hw_perf_counter *hwc, int __idx)
 {
 	int idx = __idx - X86_PMC_IDX_FIXED;
 	u64 ctrl_val, bits, mask;
@@ -691,7 +691,7 @@ static void x86_pmu_disable(struct perf_counter *counter)
 {
 	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
 	struct hw_perf_counter *hwc = &counter->hw;
-	unsigned int idx = hwc->idx;
+	int idx = hwc->idx;
 
 	/*
 	 * Must be done before we disable, otherwise the nmi handler

include/linux/perf_counter.h

@@ -318,7 +318,7 @@ struct hw_perf_counter {
 			unsigned long			config_base;
 			unsigned long			counter_base;
 			int				nmi;
-			unsigned int			idx;
+			int				idx;
 		};
 		union { /* software */
 			atomic64_t			count;