s390/cpu_mf: move struct cpu_cf_events and per-CPU variable to header file

Make the struct cpu_cf_events and the respective per-CPU variable available
to in-kernel users.  Access to this per-CPU variable shall be done between
the calls to __kernel_cpumcf_begin() and __kernel_cpumcf_end().
Signed-off-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/cpu_mcf.h

@@ -49,6 +49,15 @@ static inline void ctr_set_stop(u64 *state, int ctr_set)
 	*state &= ~(cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT);
 }
 
+struct cpu_cf_events {
+	struct cpumf_ctr_info	info;
+	atomic_t		ctr_set[CPUMF_CTR_SET_MAX];
+	u64			state, tx_state;
+	unsigned int		flags;
+	unsigned int		txn_flags;
+};
+DECLARE_PER_CPU(struct cpu_cf_events, cpu_cf_events);
+
 int __kernel_cpumcf_begin(void);
 void __kernel_cpumcf_end(void);
 

arch/s390/kernel/perf_cpum_cf.c

@@ -18,15 +18,8 @@
 #include <asm/irq.h>
 #include <asm/cpu_mcf.h>
 
-/* Local CPUMF event structure */
-struct cpu_cf_events {
-	struct cpumf_ctr_info	info;
-	atomic_t		ctr_set[CPUMF_CTR_SET_MAX];
-	u64			state, tx_state;
-	unsigned int		flags;
-	unsigned int		txn_flags;
-};
-static DEFINE_PER_CPU(struct cpu_cf_events, cpu_cf_events) = {
+/* Per-CPU event structure for the counter facility */
+DEFINE_PER_CPU(struct cpu_cf_events, cpu_cf_events) = {
 	.ctr_set = {
 		[CPUMF_CTR_SET_BASIC]	= ATOMIC_INIT(0),
 		[CPUMF_CTR_SET_USER]	= ATOMIC_INIT(0),