perf, x86: Clean up event constraints code a bit

- Remove stray debug code
 - Improve ugly macros a bit
 - Remove some whitespace damage
 - (Also fix up some accumulated damage in perf_event.h)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Stephane Eranian <eranian@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>

arch/x86/kernel/cpu/perf_event.c

@@ -100,17 +100,12 @@ struct cpu_hw_events {
 	.weight = HWEIGHT64((u64)(n)),	\
 }
 
-#define INTEL_EVENT_CONSTRAINT(c, n)	\
-	EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
+#define INTEL_EVENT_CONSTRAINT(c, n)		EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
+#define FIXED_EVENT_CONSTRAINT(c, n)		EVENT_CONSTRAINT(c, n, INTEL_ARCH_FIXED_MASK)
 
-#define FIXED_EVENT_CONSTRAINT(c, n)	\
-	EVENT_CONSTRAINT(c, n, INTEL_ARCH_FIXED_MASK)
+#define EVENT_CONSTRAINT_END			EVENT_CONSTRAINT(0, 0, 0)
 
-#define EVENT_CONSTRAINT_END \
-	EVENT_CONSTRAINT(0, 0, 0)
-
-#define for_each_event_constraint(e, c) \
-	for ((e) = (c); (e)->cmask; (e)++)
+#define for_each_event_constraint(e, c)		for ((e) = (c); (e)->cmask; (e)++)
 
 /*
  * struct x86_pmu - generic x86 pmu
@@ -1276,14 +1271,6 @@ static int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
 		if (test_bit(hwc->idx, used_mask))
 			break;
 
-#if 0
-		pr_debug("CPU%d fast config=0x%llx idx=%d assign=%c\n",
-			 smp_processor_id(),
-			 hwc->config,
-			 hwc->idx,
-			 assign ? 'y' : 'n');
-#endif
-
 		set_bit(hwc->idx, used_mask);
 		if (assign)
 			assign[i] = hwc->idx;
@@ -1333,14 +1320,6 @@ static int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
 			if (j == X86_PMC_IDX_MAX)
 				break;
 
-#if 0
-			pr_debug("CPU%d slow config=0x%llx idx=%d assign=%c\n",
-				smp_processor_id(),
-				hwc->config,
-				j,
-				assign ? 'y' : 'n');
-#endif
-
 			set_bit(j, used_mask);
 
 			if (assign)

include/linux/perf_event.h

@@ -752,8 +752,7 @@ extern int perf_max_events;
 extern const struct pmu *hw_perf_event_init(struct perf_event *event);
 
 extern void perf_event_task_sched_in(struct task_struct *task);
-extern void perf_event_task_sched_out(struct task_struct *task,
-					struct task_struct *next);
+extern void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next);
 extern void perf_event_task_tick(struct task_struct *task);
 extern int perf_event_init_task(struct task_struct *child);
 extern void perf_event_exit_task(struct task_struct *child);
@@ -853,8 +852,7 @@ extern int sysctl_perf_event_mlock;
 extern int sysctl_perf_event_sample_rate;
 
 extern void perf_event_init(void);
-extern void perf_tp_event(int event_id, u64 addr, u64 count,
-				 void *record, int entry_size);
+extern void perf_tp_event(int event_id, u64 addr, u64 count, void *record, int entry_size);
 extern void perf_bp_event(struct perf_event *event, void *data);
 
 #ifndef perf_misc_flags