| Message ID | 20241001181617.604573-3-avadhut.naik@amd.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | MCE wrapper and support for new SMCA syndrome MSRs | expand |
On Tue, 1 Oct 2024 18:12:26 +0000 Avadhut Naik <avadhut.naik@amd.com> wrote: > From: Steven Rostedt <rostedt@goodmis.org> > > When printing a dynamic array in a trace event, the method is rather ugly. > It has the format of: > > __print_array(__get_dynamic_array(array), > __get_dynmaic_array_len(array) / el_size, el_size) > > Since dynamic arrays are known to the tracing infrastructure, create a > helper macro that does the above for you. > > __print_dynamic_array(array, el_size) > > Which would expand to the same output. > > Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> > Signed-off-by: Avadhut Naik <avadhut.naik@amd.com> I'm currently adding code where I need this patch too ;-) I can make a branch that only has this patch based off of v6.12-rc1 where we can both use it. Can we do that? -- Steve > --- > Changes in v5: > Patch introduced in the series. > --- > include/trace/stages/stage3_trace_output.h | 8 ++++++++ > include/trace/stages/stage7_class_define.h | 1 + > samples/trace_events/trace-events-sample.h | 7 ++++++- > 3 files changed, 15 insertions(+), 1 deletion(-) > > diff --git a/include/trace/stages/stage3_trace_output.h b/include/trace/stages/stage3_trace_output.h > index c1fb1355d309..8e3215093e1f 100644 > --- a/include/trace/stages/stage3_trace_output.h > +++ b/include/trace/stages/stage3_trace_output.h > @@ -119,6 +119,14 @@ > trace_print_array_seq(p, array, count, el_size); \ > }) > > +#undef __print_dynamic_array > +#define __print_dynamic_array(array, el_size) \ > + ({ \ > + __print_array(__get_dynamic_array(array), \ > + __get_dynamic_array_len(array) / el_size, \ > + el_size); \ > + }) > + > #undef __print_hex_dump > #define __print_hex_dump(prefix_str, prefix_type, \ > rowsize, groupsize, buf, len, ascii) \ > diff --git a/include/trace/stages/stage7_class_define.h b/include/trace/stages/stage7_class_define.h > index bcb960d16fc0..fcd564a590f4 100644 > --- a/include/trace/stages/stage7_class_define.h > +++ b/include/trace/stages/stage7_class_define.h > @@ -22,6 +22,7 @@ > #undef __get_rel_cpumask > #undef __get_rel_sockaddr > #undef __print_array > +#undef __print_dynamic_array > #undef __print_hex_dump > #undef __get_buf > > diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h > index 55f9a3da92d5..999f78d380ae 100644 > --- a/samples/trace_events/trace-events-sample.h > +++ b/samples/trace_events/trace-events-sample.h > @@ -319,7 +319,7 @@ TRACE_EVENT(foo_bar, > __assign_cpumask(cpum, cpumask_bits(mask)); > ), > > - TP_printk("foo %s %d %s %s %s %s %s (%s) (%s) %s", __entry->foo, __entry->bar, > + TP_printk("foo %s %d %s %s %s %s %s %s (%s) (%s) %s", __entry->foo, __entry->bar, > > /* > * Notice here the use of some helper functions. This includes: > @@ -363,6 +363,11 @@ TRACE_EVENT(foo_bar, > __print_array(__get_dynamic_array(list), > __get_dynamic_array_len(list) / sizeof(int), > sizeof(int)), > + > +/* A shortcut is to use __print_dynamic_array for dynamic arrays */ > + > + __print_dynamic_array(list, sizeof(int)), > + > __get_str(str), __get_str(lstr), > __get_bitmask(cpus), __get_cpumask(cpum), > __get_str(vstr))
On Wed, 2 Oct 2024 11:06:41 -0400 Steven Rostedt <rostedt@goodmis.org> wrote: > I'm currently adding code where I need this patch too ;-) > > I can make a branch that only has this patch based off of v6.12-rc1 where > we can both use it. Can we do that? I take this back. I'm doing something a little different (updating ftrace specific events, which has their own macros). Feel free to keep using it and pulling it into your tree. -- Steve
On 10/2/2024 11:29, Steven Rostedt wrote: > On Wed, 2 Oct 2024 11:06:41 -0400 > Steven Rostedt <rostedt@goodmis.org> wrote: > >> I'm currently adding code where I need this patch too ;-) >> >> I can make a branch that only has this patch based off of v6.12-rc1 where >> we can both use it. Can we do that? > > I take this back. I'm doing something a little different (updating ftrace > specific events, which has their own macros). > > Feel free to keep using it and pulling it into your tree. > Okay, thanks! > -- Steve
diff --git a/include/trace/stages/stage3_trace_output.h b/include/trace/stages/stage3_trace_output.h index c1fb1355d309..8e3215093e1f 100644 --- a/include/trace/stages/stage3_trace_output.h +++ b/include/trace/stages/stage3_trace_output.h @@ -119,6 +119,14 @@ trace_print_array_seq(p, array, count, el_size); \ }) +#undef __print_dynamic_array +#define __print_dynamic_array(array, el_size) \ + ({ \ + __print_array(__get_dynamic_array(array), \ + __get_dynamic_array_len(array) / el_size, \ + el_size); \ + }) + #undef __print_hex_dump #define __print_hex_dump(prefix_str, prefix_type, \ rowsize, groupsize, buf, len, ascii) \ diff --git a/include/trace/stages/stage7_class_define.h b/include/trace/stages/stage7_class_define.h index bcb960d16fc0..fcd564a590f4 100644 --- a/include/trace/stages/stage7_class_define.h +++ b/include/trace/stages/stage7_class_define.h @@ -22,6 +22,7 @@ #undef __get_rel_cpumask #undef __get_rel_sockaddr #undef __print_array +#undef __print_dynamic_array #undef __print_hex_dump #undef __get_buf diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h index 55f9a3da92d5..999f78d380ae 100644 --- a/samples/trace_events/trace-events-sample.h +++ b/samples/trace_events/trace-events-sample.h @@ -319,7 +319,7 @@ TRACE_EVENT(foo_bar, __assign_cpumask(cpum, cpumask_bits(mask)); ), - TP_printk("foo %s %d %s %s %s %s %s (%s) (%s) %s", __entry->foo, __entry->bar, + TP_printk("foo %s %d %s %s %s %s %s %s (%s) (%s) %s", __entry->foo, __entry->bar, /* * Notice here the use of some helper functions. This includes: @@ -363,6 +363,11 @@ TRACE_EVENT(foo_bar, __print_array(__get_dynamic_array(list), __get_dynamic_array_len(list) / sizeof(int), sizeof(int)), + +/* A shortcut is to use __print_dynamic_array for dynamic arrays */ + + __print_dynamic_array(list, sizeof(int)), + __get_str(str), __get_str(lstr), __get_bitmask(cpus), __get_cpumask(cpum), __get_str(vstr))