diff options
| author | Thomas Richter <tmricht@linux.ibm.com> | 2018-07-03 10:15:10 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-07-23 13:49:53 +0200 |
| commit | 5925e819274260bb48e10a2fc6d22b996d1e135f (patch) | |
| tree | 3887c312e7f88f2a6a7cc800494bccaec1db217a /drivers/s390/cio | |
| parent | 661c959bae317bf3c61e438ffffec92fc9ad38e2 (diff) | |
s390 cio: Rewrite trace point in s390_cio_tpi
Tools like 'perf stat' parse the trace point format files defined
in /sys/kernel/debug/tracing/events/s390/.../format to handle
the print fmt: statement. The kernel provides a library in
directory linux/tools/lib/traceevent/* for this reason.
This library can not handle structures or unions defined in
the TRACE_EVENT/TP_STRUCT__entry macros with __field_struct macro.
There is no possibility to extract a structure member
(which might be a bit field) since there is no packing
information nor bit field offset by parsing the printf fmt line.
Therefore rewrite the TRACE_EVENT macro and add the
__field macro for the members adapter_IO, isc and type
of struct tpi_info.
Note that the same information is displayed, this is no
interface change.
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Acked-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/trace.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/s390/cio/trace.h b/drivers/s390/cio/trace.h index ab0144c8a7d3..5c06b680471e 100644 --- a/drivers/s390/cio/trace.h +++ b/drivers/s390/cio/trace.h @@ -122,6 +122,9 @@ TRACE_EVENT(s390_cio_tpi, __field(u8, cssid) __field(u8, ssid) __field(u16, schno) + __field(u8, adapter_IO) + __field(u8, isc) + __field(u8, type) ), TP_fast_assign( __entry->cc = cc; @@ -136,11 +139,14 @@ TRACE_EVENT(s390_cio_tpi, __entry->cssid = __entry->tpi_info.schid.cssid; __entry->ssid = __entry->tpi_info.schid.ssid; __entry->schno = __entry->tpi_info.schid.sch_no; + __entry->adapter_IO = __entry->tpi_info.adapter_IO; + __entry->isc = __entry->tpi_info.isc; + __entry->type = __entry->tpi_info.type; ), TP_printk("schid=%x.%x.%04x cc=%d a=%d isc=%d type=%d", __entry->cssid, __entry->ssid, __entry->schno, __entry->cc, - __entry->tpi_info.adapter_IO, __entry->tpi_info.isc, - __entry->tpi_info.type + __entry->adapter_IO, __entry->isc, + __entry->type ) ); |