[PATCH -next v2] powerpc/perf: Fix symbol undeclared warning

[Wang Wensheng <wangwensheng4@huawei.com>]

Build kernel with `C=2`:
arch/powerpc/perf/isa207-common.c:24:18: warning: symbol
'isa207_pmu_format_attr' was not declared. Should it be static?
arch/powerpc/perf/power9-pmu.c:101:5: warning: symbol 'p9_dd21_bl_ev'
was not declared. Should it be static?
arch/powerpc/perf/power9-pmu.c:115:5: warning: symbol 'p9_dd22_bl_ev'
was not declared. Should it be static?

Those symbols are used only in the files that define them so we declare
them as static to fix the warnings.

Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
---
 arch/powerpc/perf/isa207-common.c | 2 +-
 arch/powerpc/perf/power9-pmu.c    | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/perf/isa207-common.c b/arch/powerpc/perf/isa207-common.c
index 964437adec18..85dc860b265b 100644
--- a/arch/powerpc/perf/isa207-common.c
+++ b/arch/powerpc/perf/isa207-common.c
@@ -21,7 +21,7 @@ PMU_FORMAT_ATTR(thresh_stop,	"config:32-35");
 PMU_FORMAT_ATTR(thresh_start,	"config:36-39");
 PMU_FORMAT_ATTR(thresh_cmp,	"config:40-49");
 
-struct attribute *isa207_pmu_format_attr[] = {
+static struct attribute *isa207_pmu_format_attr[] = {
 	&format_attr_event.attr,
 	&format_attr_pmcxsel.attr,
 	&format_attr_mark.attr,
diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c
index 2a57e93a79dc..4a315fad1f99 100644
--- a/arch/powerpc/perf/power9-pmu.c
+++ b/arch/powerpc/perf/power9-pmu.c
@@ -98,7 +98,7 @@ extern u64 PERF_REG_EXTENDED_MASK;
 /* PowerISA v2.07 format attribute structure*/
 extern struct attribute_group isa207_pmu_format_group;
 
-int p9_dd21_bl_ev[] = {
+static int p9_dd21_bl_ev[] = {
 	PM_MRK_ST_DONE_L2,
 	PM_RADIX_PWC_L1_HIT,
 	PM_FLOP_CMPL,
@@ -112,7 +112,7 @@ int p9_dd21_bl_ev[] = {
 	PM_DISP_HELD_SYNC_HOLD,
 };
 
-int p9_dd22_bl_ev[] = {
+static int p9_dd22_bl_ev[] = {
 	PM_DTLB_MISS_16G,
 	PM_DERAT_MISS_2M,
 	PM_DTLB_MISS_2M,
-- 
2.25.0