diff mbox series

[2/4] powerpc/perf/hv-24x7: Avoid loading hv-24x7 during dump kernel

Message ID 20250216171226.432906-2-maddy@linux.ibm.com (mailing list archive)
State Superseded
Headers show
Series [1/4] powerpc/perf/core-book3s: Avoid loading platform pmu driver during dump kernel | expand

Commit Message

Madhavan Srinivasan Feb. 16, 2025, 5:12 p.m. UTC 
hv-24x7 pmu driver is intended to get system-wide resourse
metrics and may not be used during the dump kernel, avoid
loading it

Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
---
 arch/powerpc/perf/hv-24x7.c   | 3 +++
 arch/powerpc/perf/hv-common.h | 2 ++
 2 files changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index d400fa391c27..3a626cd8cf54 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -1698,6 +1698,9 @@  static int hv_24x7_init(void)
 	unsigned int pvr = mfspr(SPRN_PVR);
 	struct hv_perf_caps caps;
 
+	if (is_kdump_kernel() || is_fadump_active())
+		return 0;
+
 	if (!firmware_has_feature(FW_FEATURE_LPAR)) {
 		pr_debug("not a virtualized system, not enabling\n");
 		return -ENODEV;
diff --git a/arch/powerpc/perf/hv-common.h b/arch/powerpc/perf/hv-common.h
index 2cce17bc321c..a4c062d2264e 100644
--- a/arch/powerpc/perf/hv-common.h
+++ b/arch/powerpc/perf/hv-common.h
@@ -4,6 +4,8 @@ 
 
 #include <linux/perf_event.h>
 #include <linux/types.h>
+#include <asm/fadump.h>
+#include <asm/kexec.h>
 
 struct hv_perf_caps {
 	u16 version;