From: Kan Liang <kan.liang@linux.intel.com>

The has_extended_regs() function will be utilized in ARCH-specific code.
To facilitate this, move it to header file perf_event.h

Additionally, the function is renamed to event_has_extended_regs() which
aligns with the existing naming conventions.

No functional change intended.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
---
 include/linux/perf_event.h | 8 ++++++++
 kernel/events/core.c       | 8 +-------
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 82e617fad165..b8a0f77412b3 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1534,6 +1534,14 @@ perf_event__output_id_sample(struct perf_event *event,
 extern void
 perf_log_lost_samples(struct perf_event *event, u64 lost);
 
+static inline bool event_has_extended_regs(struct perf_event *event)
+{
+	struct perf_event_attr *attr = &event->attr;
+
+	return (attr->sample_regs_user & PERF_REG_EXTENDED_MASK) ||
+	       (attr->sample_regs_intr & PERF_REG_EXTENDED_MASK);
+}
+
 static inline bool event_has_any_exclude_flag(struct perf_event *event)
 {
 	struct perf_event_attr *attr = &event->attr;
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 8410b1a7ef3b..d487c55a4f3e 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -12964,12 +12964,6 @@ int perf_pmu_unregister(struct pmu *pmu)
 }
 EXPORT_SYMBOL_GPL(perf_pmu_unregister);
 
-static inline bool has_extended_regs(struct perf_event *event)
-{
-	return (event->attr.sample_regs_user & PERF_REG_EXTENDED_MASK) ||
-	       (event->attr.sample_regs_intr & PERF_REG_EXTENDED_MASK);
-}
-
 static int perf_try_init_event(struct pmu *pmu, struct perf_event *event)
 {
 	struct perf_event_context *ctx = NULL;
@@ -13004,7 +12998,7 @@ static int perf_try_init_event(struct pmu *pmu, struct perf_event *event)
 		goto err_pmu;
 
 	if (!(pmu->capabilities & PERF_PMU_CAP_EXTENDED_REGS) &&
-	    has_extended_regs(event)) {
+	    event_has_extended_regs(event)) {
 		ret = -EOPNOTSUPP;
 		goto err_destroy;
 	}
-- 
2.34.1