s390/pai: move enum definition to header file

Move enum definition to header file. This is done in preparation
for a follow on patch where this enum will be used in another source
file.
Also change the enum name from paiext_mode to paievt_mode
to indicate this enum is now used for several events.
Make naming consistent and rename PAI_MODE_COUNTER to PAI_MODE_COUNTING.

Signed-off-by: Thomas Richter <[e-mail]>
Acked-by: Sumanth Korikkar <[e-mail]>
Signed-off-by: Vasily Gorbik <[e-mail]>

arch/s390/include/asm/pai.h

···
 	WRITE_ONCE(S390_lowcore.ccd, S390_lowcore.ccd & ~PAI_CRYPTO_KERNEL_OFFSET);
 }
 
+enum paievt_mode {
+	PAI_MODE_NONE,
+	PAI_MODE_SAMPLING,
+	PAI_MODE_COUNTING,
+};
+
 #endif

arch/s390/kernel/perf_pai_ext.c

···
 static debug_info_t *paiext_dbg;
 static unsigned int paiext_cnt;	/* Extracted with QPACI instruction */
 
-enum paiext_mode {
-	PAI_MODE_NONE,
-	PAI_MODE_SAMPLING,
-	PAI_MODE_COUNTER,
-};
-
 struct pai_userdata {
 	u16 num;
 	u64 value;
···
 struct paiext_map {
 	unsigned long *area;		/* Area for CPU to store counters */
 	struct pai_userdata *save;	/* Area to store non-zero counters */
-	enum paiext_mode mode;		/* Type of event */
+	enum paievt_mode mode;		/* Type of event */
 	unsigned int active_events;	/* # of PAI Extension users */
 	unsigned int refcnt;
 	struct perf_event *event;	/* Perf event for sampling */
···
 			goto unlock;
 		}
 		cpump->mode = a->sample_period ? PAI_MODE_SAMPLING
-					       : PAI_MODE_COUNTER;
+					       : PAI_MODE_COUNTING;
 	} else {
 		/* Multiple invocation, check whats active.
 		 * Supported are multiple counter events or only one sampling
 		 * event concurrently at any one time.
 		 */
 		if (cpump->mode == PAI_MODE_SAMPLING ||
-		    (cpump->mode == PAI_MODE_COUNTER && a->sample_period)) {
+		    (cpump->mode == PAI_MODE_COUNTING && a->sample_period)) {
 			rc = -EBUSY;
 			goto unlock;
 		}