From: Alison Schofield <alison.schofi...@intel.com>
When parsing CXL events, callers may only be interested in events
that originate from the current process. Introduce an optional
argument to the event trace context: event_pid. When event_pid is
present, simply skip the parsing of events without a matching pid.
It is not a failure to see other, non matching events.
The initial use case for this is device poison listings where
only the media-error records requested by this process are wanted.
Signed-off-by: Alison Schofield <alison.schofi...@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.came...@huawei.com>
Reviewed-by: Dave Jiang <dave.ji...@intel.com>
---
cxl/event_trace.c | 5 +++++
cxl/event_trace.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/cxl/event_trace.c b/cxl/event_trace.c
index 1b5aa09de8b2..93a95f9729fd 100644
--- a/cxl/event_trace.c
+++ b/cxl/event_trace.c
@@ -214,6 +214,11 @@ static int cxl_event_parse(struct tep_event *event, struct
tep_record *record,
return 0;
}
+ if (event_ctx->event_pid) {
+ if (event_ctx->event_pid != tep_data_pid(event->tep, record))
+ return 0;
+ }
+
if (event_ctx->parse_event)
return event_ctx->parse_event(event, record,
&event_ctx->jlist_head);
diff --git a/cxl/event_trace.h b/cxl/event_trace.h
index ec6267202c8b..7f7773b2201f 100644
--- a/cxl/event_trace.h
+++ b/cxl/event_trace.h
@@ -15,6 +15,7 @@ struct event_ctx {
const char *system;
struct list_head jlist_head;
const char *event_name; /* optional */
+ int event_pid; /* optional */
int (*parse_event)(struct tep_event *event, struct tep_record *record,
struct list_head *jlist_head); /* optional */
};
--
2.37.3
