diff mbox series

[v2,3/4] powerpc/perf/hv-gpci: Avoid loading hv-gpci pmu during dump kernel

Message ID 20250301182310.6832-3-maddy@linux.ibm.com (mailing list archive)
State Superseded
Headers show
Series [v2,1/4] powerpc/perf/core-book3s: Avoid loading platform pmu driver during dump kernel | expand

Commit Message

Madhavan Srinivasan March 1, 2025, 6:23 p.m. UTC 
hv-gpci pmu driver is intended to get powervm hypervisor
system-wide metrics and these are built-in. hv-gpci pmu
not have commandline option to disable them. Add check
for kdump and fadump kernel to avoids loading them.

Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
---
Changelog v1:
- Added more details to commmit message

 arch/powerpc/perf/hv-gpci.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c
index 241551d1282f..e0c3df0a048f 100644
--- a/arch/powerpc/perf/hv-gpci.c
+++ b/arch/powerpc/perf/hv-gpci.c
@@ -989,6 +989,9 @@  static int hv_gpci_init(void)
 	struct hv_perf_caps caps;
 	struct hv_gpci_request_buffer *arg;
 
+	if (is_kdump_kernel() || is_fadump_active())
+		return 0;
+
 	hv_gpci_assert_offsets_correct();
 
 	if (!firmware_has_feature(FW_FEATURE_LPAR)) {