perf_counter, powerpc, sparc: Fix compilation after perf_counter_over…

…flow() change

Commit 5622f29 ("x86, perf_counter, bts: Optimize BTS overflow
handling") removed the regs field from struct perf_sample_data and
added a regs parameter to perf_counter_overflow().  This breaks the
build on powerpc (and Sparc) as reported by Sachin Sant:

  arch/powerpc/kernel/perf_counter.c: In function 'record_and_restart':
  arch/powerpc/kernel/perf_counter.c:1165: error: unknown field 'regs' specified in initializer

This adjusts arch/powerpc/kernel/perf_counter.c to correspond with the
new struct perf_sample_data and perf_counter_overflow().

[ v2: also fix Sparc, Markus Metzger <markus.t.metzger@intel.com> ]

Reported-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Markus Metzger <markus.t.metzger@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: benh@kernel.crashing.org
Cc: linuxppc-dev@ozlabs.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <19127.8400.376239.586120@drongo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/powerpc/kernel/perf_counter.c

@@ -1162,15 +1162,14 @@ static void record_and_restart(struct perf_counter *counter, unsigned long val,
 	 */
 	if (record) {
 		struct perf_sample_data data = {
-			.regs	= regs,
 			.addr	= 0,
 			.period	= counter->hw.last_period,
 		};
 
 		if (counter->attr.sample_type & PERF_SAMPLE_ADDR)
 			perf_get_data_addr(regs, &data.addr);
 
-		if (perf_counter_overflow(counter, nmi, &data)) {
+		if (perf_counter_overflow(counter, nmi, &data, regs)) {
 			/*
 			 * Interrupts are coming too fast - throttle them
 			 * by setting the counter to 0, so it will be

arch/sparc/kernel/perf_counter.c

@@ -493,7 +493,6 @@ static int __kprobes perf_counter_nmi_handler(struct notifier_block *self,
 
 	regs = args->regs;
 
-	data.regs = regs;
 	data.addr = 0;
 
 	cpuc = &__get_cpu_var(cpu_hw_counters);
@@ -513,7 +512,7 @@ static int __kprobes perf_counter_nmi_handler(struct notifier_block *self,
 		if (!sparc_perf_counter_set_period(counter, hwc, idx))
 			continue;
 
-		if (perf_counter_overflow(counter, 1, &data))
+		if (perf_counter_overflow(counter, 1, &data, regs))
 			sparc_pmu_disable_counter(hwc, idx);
 	}
 

include/linux/perf_counter.h

@@ -849,23 +849,6 @@ static inline void perf_counter_comm(struct task_struct *tsk)		{ }
 static inline void perf_counter_fork(struct task_struct *tsk)		{ }
 static inline void perf_counter_init(void)				{ }
 
-static inline int
-perf_output_begin(struct perf_output_handle *handle, struct perf_counter *c,
-		  unsigned int size, int nmi, int sample)		{ }
-static inline void perf_output_end(struct perf_output_handle *handle)	{ }
-static inline void
-perf_output_copy(struct perf_output_handle *handle,
-		 const void *buf, unsigned int len)			{ }
-static inline void
-perf_output_sample(struct perf_output_handle *handle,
-		   struct perf_event_header *header,
-		   struct perf_sample_data *data,
-		   struct perf_counter *counter)			{ }
-static inline void
-perf_prepare_sample(struct perf_event_header *header,
-		    struct perf_sample_data *data,
-		    struct perf_counter *counter,
-		    struct pt_regs *regs)				{ }
 #endif
 
 #define perf_output_put(handle, x) \