Add a common function for cxl command to enable and disable event tracing for the instance created. Will only enable "cxl" system.
Signed-off-by: Dave Jiang <[email protected]> --- cxl/event_trace.c | 21 +++++++++++++++++++++ cxl/event_trace.h | 3 +++ 2 files changed, 24 insertions(+) diff --git a/cxl/event_trace.c b/cxl/event_trace.c index d7bbd3cf4946..a973a1f62d35 100644 --- a/cxl/event_trace.c +++ b/cxl/event_trace.c @@ -228,3 +228,24 @@ int cxl_parse_events(struct tracefs_instance *inst, struct event_ctx *ectx) tep_free(tep); return rc; } + +int cxl_event_tracing_enable(struct tracefs_instance *inst, const char *system, + const char *event) +{ + int rc; + + rc = tracefs_event_enable(inst, system, event); + if (rc == -1) + return -errno; + + if (tracefs_trace_is_on(inst)) + return 0; + + tracefs_trace_on(inst); + return 0; +} + +int cxl_event_tracing_disable(struct tracefs_instance *inst) +{ + return tracefs_trace_off(inst); +} diff --git a/cxl/event_trace.h b/cxl/event_trace.h index e83737de0ad5..ec6267202c8b 100644 --- a/cxl/event_trace.h +++ b/cxl/event_trace.h @@ -20,5 +20,8 @@ struct event_ctx { }; int cxl_parse_events(struct tracefs_instance *inst, struct event_ctx *ectx); +int cxl_event_tracing_enable(struct tracefs_instance *inst, const char *system, + const char *event); +int cxl_event_tracing_disable(struct tracefs_instance *inst); #endif
