perf_counter: Rename 'event' to event_id/hw_event

In preparation to the renames, to avoid a namespace clash.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 37 insertions, 37 deletions

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index a6c8b27553cd..b1f115696c84 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -124,9 +124,9 @@ static const u64 p6_perfmon_event_map[] =
   [PERF_COUNT_HW_BUS_CYCLES]            = 0x0062,
 };
 
-static u64 p6_pmu_event_map(int event)
+static u64 p6_pmu_event_map(int hw_event)
 {
-        return p6_perfmon_event_map[event];
+        return p6_perfmon_event_map[hw_event];
 }
 
 /*
@@ -137,7 +137,7 @@ static u64 p6_pmu_event_map(int event)
  */
 #define P6_NOP_COUNTER                  0x0000002EULL
 
-static u64 p6_pmu_raw_event(u64 event)
+static u64 p6_pmu_raw_event(u64 hw_event)
 {
 #define P6_EVNTSEL_EVENT_MASK           0x000000FFULL
 #define P6_EVNTSEL_UNIT_MASK            0x0000FF00ULL
@@ -152,7 +152,7 @@ static u64 p6_pmu_raw_event(u64 event)
          P6_EVNTSEL_INV_MASK   |        \
          P6_EVNTSEL_COUNTER_MASK)
 
-        return event & P6_EVNTSEL_MASK;
+        return hw_event & P6_EVNTSEL_MASK;
 }
 
 
@@ -170,16 +170,16 @@ static const u64 intel_perfmon_event_map[] =
   [PERF_COUNT_HW_BUS_CYCLES]            = 0x013c,
 };
 
-static u64 intel_pmu_event_map(int event)
+static u64 intel_pmu_event_map(int hw_event)
 {
-        return intel_perfmon_event_map[event];
+        return intel_perfmon_event_map[hw_event];
 }
 
 /*
- * Generalized hw caching related event table, filled
+ * Generalized hw caching related hw_event table, filled
  * in on a per model basis. A value of 0 means
- * 'not supported', -1 means 'event makes no sense on
- * this CPU', any other value means the raw event
+ * 'not supported', -1 means 'hw_event makes no sense on
+ * this CPU', any other value means the raw hw_event
  * ID.
  */
 
@@ -463,7 +463,7 @@ static const u64 atom_hw_cache_event_ids
  },
 };
 
-static u64 intel_pmu_raw_event(u64 event)
+static u64 intel_pmu_raw_event(u64 hw_event)
 {
 #define CORE_EVNTSEL_EVENT_MASK         0x000000FFULL
 #define CORE_EVNTSEL_UNIT_MASK          0x0000FF00ULL
@@ -478,7 +478,7 @@ static u64 intel_pmu_raw_event(u64 event)
          CORE_EVNTSEL_INV_MASK  |       \
          CORE_EVNTSEL_COUNTER_MASK)
 
-        return event & CORE_EVNTSEL_MASK;
+        return hw_event & CORE_EVNTSEL_MASK;
 }
 
 static const u64 amd_hw_cache_event_ids
@@ -585,12 +585,12 @@ static const u64 amd_perfmon_event_map[] =
   [PERF_COUNT_HW_BRANCH_MISSES]         = 0x00c5,
 };
 
-static u64 amd_pmu_event_map(int event)
+static u64 amd_pmu_event_map(int hw_event)
 {
-        return amd_perfmon_event_map[event];
+        return amd_perfmon_event_map[hw_event];
 }
 
-static u64 amd_pmu_raw_event(u64 event)
+static u64 amd_pmu_raw_event(u64 hw_event)
 {
 #define K7_EVNTSEL_EVENT_MASK   0x7000000FFULL
 #define K7_EVNTSEL_UNIT_MASK    0x00000FF00ULL
@@ -605,7 +605,7 @@ static u64 amd_pmu_raw_event(u64 event)
          K7_EVNTSEL_INV_MASK   |        \
          K7_EVNTSEL_COUNTER_MASK)
 
-        return event & K7_EVNTSEL_MASK;
+        return hw_event & K7_EVNTSEL_MASK;
 }
 
 /*
@@ -956,7 +956,7 @@ static int __hw_perf_counter_init(struct perf_counter *counter)
         }
 
         /*
-         * Raw event type provide the config in the event structure
+         * Raw hw_event type provide the config in the hw_event structure
          */
         if (attr->type == PERF_TYPE_RAW) {
                 hwc->config |= x86_pmu.raw_event(attr->config);
@@ -1245,7 +1245,7 @@ x86_perf_counter_set_period(struct perf_counter *counter,
                 ret = 1;
         }
         /*
-         * Quirk: certain CPUs dont like it if just 1 event is left:
+         * Quirk: certain CPUs dont like it if just 1 hw_event is left:
          */
         if (unlikely(left < 2))
                 left = 2;
@@ -1337,11 +1337,11 @@ static void amd_pmu_enable_counter(struct hw_perf_counter *hwc, int idx)
 static int
 fixed_mode_idx(struct perf_counter *counter, struct hw_perf_counter *hwc)
 {
-        unsigned int event;
+        unsigned int hw_event;
 
-        event = hwc->config & ARCH_PERFMON_EVENT_MASK;
+        hw_event = hwc->config & ARCH_PERFMON_EVENT_MASK;
 
-        if (unlikely((event ==
+        if (unlikely((hw_event ==
                       x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS)) &&
                      (hwc->sample_period == 1)))
                 return X86_PMC_IDX_FIXED_BTS;
@@ -1349,11 +1349,11 @@ fixed_mode_idx(struct perf_counter *counter, struct hw_perf_counter *hwc)
         if (!x86_pmu.num_counters_fixed)
                 return -1;
 
-        if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS)))
+        if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS)))
                 return X86_PMC_IDX_FIXED_INSTRUCTIONS;
-        if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_CPU_CYCLES)))
+        if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_CPU_CYCLES)))
                 return X86_PMC_IDX_FIXED_CPU_CYCLES;
-        if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_BUS_CYCLES)))
+        if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_BUS_CYCLES)))
                 return X86_PMC_IDX_FIXED_BUS_CYCLES;
 
         return -1;
@@ -1970,7 +1970,7 @@ static int intel_pmu_init(void)
 
         /*
          * Check whether the Architectural PerfMon supports
-         * Branch Misses Retired Event or not.
+         * Branch Misses Retired hw_event or not.
          */
         cpuid(10, &eax.full, &ebx, &unused, &edx.full);
         if (eax.split.mask_length <= ARCH_PERFMON_BRANCH_MISSES_RETIRED)
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 13ad73aed4ca..62de0db8092b 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -3044,22 +3044,22 @@ perf_counter_read_event(struct perf_counter *counter,
                         struct task_struct *task)
 {
         struct perf_output_handle handle;
-        struct perf_read_event event = {
+        struct perf_read_event read_event = {
                 .header = {
                         .type = PERF_EVENT_READ,
                         .misc = 0,
-                        .size = sizeof(event) + perf_counter_read_size(counter),
+                        .size = sizeof(read_event) + perf_counter_read_size(counter),
                 },
                 .pid = perf_counter_pid(counter, task),
                 .tid = perf_counter_tid(counter, task),
         };
         int ret;
 
-        ret = perf_output_begin(&handle, counter, event.header.size, 0, 0);
+        ret = perf_output_begin(&handle, counter, read_event.header.size, 0, 0);
         if (ret)
                 return;
 
-        perf_output_put(&handle, event);
+        perf_output_put(&handle, read_event);
         perf_output_read(&handle, counter);
 
         perf_output_end(&handle);
@@ -3698,14 +3698,14 @@ static int perf_swcounter_is_counting(struct perf_counter *counter)
 
 static int perf_swcounter_match(struct perf_counter *counter,
                                 enum perf_type_id type,
-                                u32 event, struct pt_regs *regs)
+                                u32 event_id, struct pt_regs *regs)
 {
         if (!perf_swcounter_is_counting(counter))
                 return 0;
 
         if (counter->attr.type != type)
                 return 0;
-        if (counter->attr.config != event)
+        if (counter->attr.config != event_id)
                 return 0;
 
         if (regs) {
@@ -3721,7 +3721,7 @@ static int perf_swcounter_match(struct perf_counter *counter,
 
 static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
                                      enum perf_type_id type,
-                                     u32 event, u64 nr, int nmi,
+                                     u32 event_id, u64 nr, int nmi,
                                      struct perf_sample_data *data,
                                      struct pt_regs *regs)
 {
@@ -3732,7 +3732,7 @@ static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
 
         rcu_read_lock();
         list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
-                if (perf_swcounter_match(counter, type, event, regs))
+                if (perf_swcounter_match(counter, type, event_id, regs))
                         perf_swcounter_add(counter, nr, nmi, data, regs);
         }
         rcu_read_unlock();
@@ -4036,17 +4036,17 @@ atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX];
 
 static void sw_perf_counter_destroy(struct perf_counter *counter)
 {
-        u64 event = counter->attr.config;
+        u64 event_id = counter->attr.config;
 
         WARN_ON(counter->parent);
 
-        atomic_dec(&perf_swcounter_enabled[event]);
+        atomic_dec(&perf_swcounter_enabled[event_id]);
 }
 
 static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
 {
         const struct pmu *pmu = NULL;
-        u64 event = counter->attr.config;
+        u64 event_id = counter->attr.config;
 
         /*
          * Software counters (currently) can't in general distinguish
@@ -4055,7 +4055,7 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
          * to be kernel events, and page faults are never hypervisor
          * events.
          */
-        switch (event) {
+        switch (event_id) {
         case PERF_COUNT_SW_CPU_CLOCK:
                 pmu = &perf_ops_cpu_clock;
 
@@ -4077,7 +4077,7 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
         case PERF_COUNT_SW_CONTEXT_SWITCHES:
         case PERF_COUNT_SW_CPU_MIGRATIONS:
                 if (!counter->parent) {
-                        atomic_inc(&perf_swcounter_enabled[event]);
+                        atomic_inc(&perf_swcounter_enabled[event_id]);
                         counter->destroy = sw_perf_counter_destroy;
                 }
                 pmu = &perf_ops_generic;