[PATCH] perf/core: make nr_addr_filters attribute static

[Ben Dooks]

The 'dev_attr_nr_addr_filters' attribute is not exported
outside of the kernel/events/core.c file so make it static
to avoid the following sparse warning:

kernel/events/core.c:12170:1: warning: symbol 'dev_attr_nr_addr_filters' was not declared. Should it be static?

Fixes: 6e855cd4f4b52 ("perf/core: Let userspace know if the PMU supports address filters")
Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx>
---
 kernel/events/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index dad0d3d2e85f..b79f9be8f074 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -12167,7 +12167,7 @@ static ssize_t nr_addr_filters_show(struct device *dev,
 
 	return sysfs_emit(page, "%d\n", pmu->nr_addr_filters);
 }
-DEVICE_ATTR_RO(nr_addr_filters);
+static DEVICE_ATTR_RO(nr_addr_filters);
 
 static struct idr pmu_idr;
 
-- 
2.37.2.352.g3c44437643