| Message ID | 20230402-qrtr-trace-types-v1-1-da062d368e74@kernel.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [RFC] net: qrtr: correct types of trace event parameters | expand |
On Sun, Apr 02, 2023 at 01:15:33PM +0200, Simon Horman wrote: > The arguments passed to the trace events are of type unsigned int, > however the signature of the events used __le32 parameters. > > I may be missing the point here, but sparse flagged this and it > does seem incorrect to me. > > net/qrtr/ns.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/qrtr.h): > ./include/trace/events/qrtr.h:11:1: warning: cast to restricted __le32 > ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer > ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer > ... (a lot more similar warnings) > net/qrtr/ns.c:115:47: expected restricted __le32 [usertype] service > net/qrtr/ns.c:115:47: got unsigned int service > net/qrtr/ns.c:115:61: warning: incorrect type in argument 2 (different base types) > ... (a lot more similar warnings) > You are right. The actual arguments (service, instance, node, port) transferred/ received over QRTR are in le32 as per the protocol. But in the NS driver, the arguments passed to the trace events are in the native endian (i.e) before getting typecased to le32 for transmission. And my intention was to trace the arguments in native endian format only. So this patch indeed fixes the issue. > Signed-off-by: Simon Horman <horms@kernel.org> Please add the fixes tag once you remove RFC, Fixes: dfddb54043f0 ("net: qrtr: Add tracepoint support") Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> - Mani > --- > include/trace/events/qrtr.h | 33 ++++++++++++++++++--------------- > 1 file changed, 18 insertions(+), 15 deletions(-) > > diff --git a/include/trace/events/qrtr.h b/include/trace/events/qrtr.h > index b1de14c3bb93..441132c67133 100644 > --- a/include/trace/events/qrtr.h > +++ b/include/trace/events/qrtr.h > @@ -10,15 +10,16 @@ > > TRACE_EVENT(qrtr_ns_service_announce_new, > > - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), > + TP_PROTO(unsigned int service, unsigned int instance, > + unsigned int node, unsigned int port), > > TP_ARGS(service, instance, node, port), > > TP_STRUCT__entry( > - __field(__le32, service) > - __field(__le32, instance) > - __field(__le32, node) > - __field(__le32, port) > + __field(unsigned int, service) > + __field(unsigned int, instance) > + __field(unsigned int, node) > + __field(unsigned int, port) > ), > > TP_fast_assign( > @@ -36,15 +37,16 @@ TRACE_EVENT(qrtr_ns_service_announce_new, > > TRACE_EVENT(qrtr_ns_service_announce_del, > > - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), > + TP_PROTO(unsigned int service, unsigned int instance, > + unsigned int node, unsigned int port), > > TP_ARGS(service, instance, node, port), > > TP_STRUCT__entry( > - __field(__le32, service) > - __field(__le32, instance) > - __field(__le32, node) > - __field(__le32, port) > + __field(unsigned int, service) > + __field(unsigned int, instance) > + __field(unsigned int, node) > + __field(unsigned int, port) > ), > > TP_fast_assign( > @@ -62,15 +64,16 @@ TRACE_EVENT(qrtr_ns_service_announce_del, > > TRACE_EVENT(qrtr_ns_server_add, > > - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), > + TP_PROTO(unsigned int service, unsigned int instance, > + unsigned int node, unsigned int port), > > TP_ARGS(service, instance, node, port), > > TP_STRUCT__entry( > - __field(__le32, service) > - __field(__le32, instance) > - __field(__le32, node) > - __field(__le32, port) > + __field(unsigned int, service) > + __field(unsigned int, instance) > + __field(unsigned int, node) > + __field(unsigned int, port) > ), > > TP_fast_assign( >
On Mon, Apr 03, 2023 at 10:44:56AM +0530, Manivannan Sadhasivam wrote: > On Sun, Apr 02, 2023 at 01:15:33PM +0200, Simon Horman wrote: > > The arguments passed to the trace events are of type unsigned int, > > however the signature of the events used __le32 parameters. > > > > I may be missing the point here, but sparse flagged this and it > > does seem incorrect to me. > > > > net/qrtr/ns.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/qrtr.h): > > ./include/trace/events/qrtr.h:11:1: warning: cast to restricted __le32 > > ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer > > ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer > > ... (a lot more similar warnings) > > net/qrtr/ns.c:115:47: expected restricted __le32 [usertype] service > > net/qrtr/ns.c:115:47: got unsigned int service > > net/qrtr/ns.c:115:61: warning: incorrect type in argument 2 (different base types) > > ... (a lot more similar warnings) > > > > You are right. The actual arguments (service, instance, node, port) transferred/ > received over QRTR are in le32 as per the protocol. But in the NS driver, the > arguments passed to the trace events are in the native endian (i.e) before > getting typecased to le32 for transmission. > > And my intention was to trace the arguments in native endian format only. So > this patch indeed fixes the issue. > > > Signed-off-by: Simon Horman <horms@kernel.org> > > Please add the fixes tag once you remove RFC, > > Fixes: dfddb54043f0 ("net: qrtr: Add tracepoint support") > > Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Hi Manivannan, thanks for your review. I'll add the tags and drop the RFC designation.
On 4/2/2023 4:45 PM, Simon Horman wrote: > The arguments passed to the trace events are of type unsigned int, > however the signature of the events used __le32 parameters. > > I may be missing the point here, but sparse flagged this and it > does seem incorrect to me. > > net/qrtr/ns.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/qrtr.h): > ./include/trace/events/qrtr.h:11:1: warning: cast to restricted __le32 > ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer > ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer > ... (a lot more similar warnings) > net/qrtr/ns.c:115:47: expected restricted __le32 [usertype] service > net/qrtr/ns.c:115:47: got unsigned int service > net/qrtr/ns.c:115:61: warning: incorrect type in argument 2 (different base types) > ... (a lot more similar warnings) > > Signed-off-by: Simon Horman <horms@kernel.org> > --- > include/trace/events/qrtr.h | 33 ++++++++++++++++++--------------- > 1 file changed, 18 insertions(+), 15 deletions(-) > > diff --git a/include/trace/events/qrtr.h b/include/trace/events/qrtr.h > index b1de14c3bb93..441132c67133 100644 > --- a/include/trace/events/qrtr.h > +++ b/include/trace/events/qrtr.h > @@ -10,15 +10,16 @@ > > TRACE_EVENT(qrtr_ns_service_announce_new, > > - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), > + TP_PROTO(unsigned int service, unsigned int instance, > + unsigned int node, unsigned int port), > > TP_ARGS(service, instance, node, port), > > TP_STRUCT__entry( > - __field(__le32, service) > - __field(__le32, instance) > - __field(__le32, node) > - __field(__le32, port) > + __field(unsigned int, service) > + __field(unsigned int, instance) > + __field(unsigned int, node) > + __field(unsigned int, port) > ), > > TP_fast_assign( > @@ -36,15 +37,16 @@ TRACE_EVENT(qrtr_ns_service_announce_new, > > TRACE_EVENT(qrtr_ns_service_announce_del, > > - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), > + TP_PROTO(unsigned int service, unsigned int instance, > + unsigned int node, unsigned int port), > > TP_ARGS(service, instance, node, port), > > TP_STRUCT__entry( > - __field(__le32, service) > - __field(__le32, instance) > - __field(__le32, node) > - __field(__le32, port) > + __field(unsigned int, service) > + __field(unsigned int, instance) > + __field(unsigned int, node) > + __field(unsigned int, port) > ), > > TP_fast_assign( > @@ -62,15 +64,16 @@ TRACE_EVENT(qrtr_ns_service_announce_del, > > TRACE_EVENT(qrtr_ns_server_add, > > - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), > + TP_PROTO(unsigned int service, unsigned int instance, > + unsigned int node, unsigned int port), > > TP_ARGS(service, instance, node, port), > > TP_STRUCT__entry( > - __field(__le32, service) > - __field(__le32, instance) > - __field(__le32, node) > - __field(__le32, port) > + __field(unsigned int, service) > + __field(unsigned int, instance) > + __field(unsigned int, node) > + __field(unsigned int, port) > ), > > TP_fast_assign( LGTM. Acked-by: Mukesh Ojha <quic_mojha@quicinc.com> --Mukesh >
diff --git a/include/trace/events/qrtr.h b/include/trace/events/qrtr.h index b1de14c3bb93..441132c67133 100644 --- a/include/trace/events/qrtr.h +++ b/include/trace/events/qrtr.h @@ -10,15 +10,16 @@ TRACE_EVENT(qrtr_ns_service_announce_new, - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), + TP_PROTO(unsigned int service, unsigned int instance, + unsigned int node, unsigned int port), TP_ARGS(service, instance, node, port), TP_STRUCT__entry( - __field(__le32, service) - __field(__le32, instance) - __field(__le32, node) - __field(__le32, port) + __field(unsigned int, service) + __field(unsigned int, instance) + __field(unsigned int, node) + __field(unsigned int, port) ), TP_fast_assign( @@ -36,15 +37,16 @@ TRACE_EVENT(qrtr_ns_service_announce_new, TRACE_EVENT(qrtr_ns_service_announce_del, - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), + TP_PROTO(unsigned int service, unsigned int instance, + unsigned int node, unsigned int port), TP_ARGS(service, instance, node, port), TP_STRUCT__entry( - __field(__le32, service) - __field(__le32, instance) - __field(__le32, node) - __field(__le32, port) + __field(unsigned int, service) + __field(unsigned int, instance) + __field(unsigned int, node) + __field(unsigned int, port) ), TP_fast_assign( @@ -62,15 +64,16 @@ TRACE_EVENT(qrtr_ns_service_announce_del, TRACE_EVENT(qrtr_ns_server_add, - TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port), + TP_PROTO(unsigned int service, unsigned int instance, + unsigned int node, unsigned int port), TP_ARGS(service, instance, node, port), TP_STRUCT__entry( - __field(__le32, service) - __field(__le32, instance) - __field(__le32, node) - __field(__le32, port) + __field(unsigned int, service) + __field(unsigned int, instance) + __field(unsigned int, node) + __field(unsigned int, port) ), TP_fast_assign(
The arguments passed to the trace events are of type unsigned int, however the signature of the events used __le32 parameters. I may be missing the point here, but sparse flagged this and it does seem incorrect to me. net/qrtr/ns.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/qrtr.h): ./include/trace/events/qrtr.h:11:1: warning: cast to restricted __le32 ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer ./include/trace/events/qrtr.h:11:1: warning: restricted __le32 degrades to integer ... (a lot more similar warnings) net/qrtr/ns.c:115:47: expected restricted __le32 [usertype] service net/qrtr/ns.c:115:47: got unsigned int service net/qrtr/ns.c:115:61: warning: incorrect type in argument 2 (different base types) ... (a lot more similar warnings) Signed-off-by: Simon Horman <horms@kernel.org> --- include/trace/events/qrtr.h | 33 ++++++++++++++++++--------------- 1 file changed, 18 insertions(+), 15 deletions(-)