linux-dev/include/trace/events/qla.h, branch master

scsi: qla2xxx: tracing: Use the new __vstring() helper

2022-07-19T15:20:25Z

Instead of open coding a __dynamic_array() with a fixed length (which defeats the purpose of the dynamic array in the first place). Use the new __vstring() helper that will use a va_list and only write enough of the string into the ring buffer that is needed. Link: https://lkml.kernel.org/r/20220705224750.896553364@goodmis.org Cc: Bart Van Assche Cc: Ingo Molnar Cc: Andrew Morton Cc: Martin K. Petersen Signed-off-by: Steven Rostedt (Google)

scsi: qla2xxx: Suppress two recently introduced compiler warnings

2020-05-20T01:43:01Z

Suppress the following two compiler warnings because these are not useful: In file included from ./include/trace/define_trace.h:102, from ./include/trace/events/qla.h:39, from drivers/scsi/qla2xxx/qla_dbg.c:77: ./include/trace/events/qla.h: In function 'trace_event_raw_event_qla_log_event': ./include/trace/trace_events.h:691:9: warning: function 'trace_event_raw_event_qla_log_event' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 691 | struct trace_event_raw_##call *entry; \ | ^~~~~~~~~~~~~~~~ ./include/trace/events/qla.h:12:1: note: in expansion of macro 'DECLARE_EVENT_CLASS' 12 | DECLARE_EVENT_CLASS(qla_log_event, | ^~~~~~~~~~~~~~~~~~~ In file included from ./include/trace/define_trace.h:103, from ./include/trace/events/qla.h:39, from drivers/scsi/qla2xxx/qla_dbg.c:77: ./include/trace/events/qla.h: In function 'perf_trace_qla_log_event': ./include/trace/perf.h:41:9: warning: function 'perf_trace_qla_log_event' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 41 | struct hlist_head *head; \ | ^~~~~~~~~~ ./include/trace/events/qla.h:12:1: note: in expansion of macro 'DECLARE_EVENT_CLASS' Link: https://lore.kernel.org/r/20200518211712.11395-3-bvanassche@acm.org Fixes: 598a90f2002c ("scsi: qla2xxx: add ring buffer for tracing debug logs") Cc: Rajan Shanmugavelu Cc: Joe Jin Cc: Nilesh Javali Cc: Quinn Tran Cc: Martin Wilck Reviewed-by: Daniel Wagner Reviewed-by: Himanshu Madhani Reviewed-by: Hannes Reinecke Reviewed-by: Arun Easi Signed-off-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: qla2xxx: add ring buffer for tracing debug logs

2020-03-12T03:07:57Z

Having this log in a ring buffer helps to diagnose qla2xxx driver and firmware issues instead of having to reproduce the problem with extended_logging enabled. This saves cycles and helps when it is hard to reproduce problem. Link: https://lore.kernel.org/r/1581557368-32080-1-git-send-email-rajan.shanmugavelu@oracle.com Reviewed-by: Joe Jin Acked-by: Himanshu Madhani Signed-off-by: Rajan Shanmugavelu Signed-off-by: Martin K. Petersen