bus: arm-ccn: Add missing event attribute exclusions for host/guest
CCN PMUs have no knowledge into VM-related origins of the memory
traffic, therefore can't handle requests for host-only or guest-only
events.
Added appropriate exclusions (they should have been there from the
beginning). This required changing the error code returned, as the
userspace tool only re-negotiates the options (exclude_guest is true by
default) only for EINVAL.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c
index ddb65c1..02f81e3 100644
--- a/drivers/bus/arm-ccn.c
+++ b/drivers/bus/arm-ccn.c
@@ -745,9 +745,10 @@
if (has_branch_stack(event) || event->attr.exclude_user ||
event->attr.exclude_kernel || event->attr.exclude_hv ||
- event->attr.exclude_idle) {
+ event->attr.exclude_idle || event->attr.exclude_host ||
+ event->attr.exclude_guest) {
dev_warn(ccn->dev, "Can't exclude execution levels!\n");
- return -EOPNOTSUPP;
+ return -EINVAL;
}
if (event->cpu < 0) {