On 12/17/20 5:02 PM, Kajol Jain wrote:
hv_24x7 performance monitoring unit creates list of supported events
from the event catalog obtained via HCALL. hv_24x7 catalog could also
contain invalid or dummy events (with names like FREE_ or CPM_FREE_ so
Can you also include " RESERVED_NEST*" as part of the check.
# ls /sys/devices/hv_24x7/events | grep RESERVED
RESERVED_NEST1
RESERVED_NEST10
RESERVED_NEST11
RESERVED_NEST12
...
Maddy
on). These events does not have any hardware counters backing them.
So patch adds a check to string compare the event names to filter
out them.
Signed-off-by: Kajol Jain <kj...@linux.ibm.com>
---
arch/powerpc/perf/hv-24x7.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 6e7e820508df..c3252d8a7818 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -894,6 +894,11 @@ static int create_events_from_catalog(struct attribute
***events_,
name = event_name(event, &nl);
+ if (strstr(name, "FREE_")) {
+ pr_info("invalid event %zu (%.*s)\n", event_idx, nl,
name);
+ junk_events++;
+ continue;
+ }
if (event->event_group_record_len == 0) {
pr_devel("invalid event %zu (%.*s): group_record_len == 0,
skipping\n",
event_idx, nl, name);
@@ -955,6 +960,9 @@ static int create_events_from_catalog(struct attribute
***events_,
continue;
name = event_name(event, &nl);
+ if (strstr(name, "FREE_"))
+ continue;
+
nonce = event_uniq_add(&ev_uniq, name, nl, event->domain);
ct = event_data_to_attrs(event_idx, events + event_attr_ct,
event, nonce);
