From: Alison Schofield <alison.schofi...@intel.com> When parsing 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 CXL 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> --- util/event_trace.c | 5 +++++ util/event_trace.h | 1 + 2 files changed, 6 insertions(+) diff --git a/util/event_trace.c b/util/event_trace.c index 16013412bc06..57318e2adace 100644 --- a/util/event_trace.c +++ b/util/event_trace.c @@ -214,6 +214,11 @@ static int 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/util/event_trace.h b/util/event_trace.h index 37c39aded871..6586e1dc254d 100644 --- a/util/event_trace.h +++ b/util/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