On Tue, 29 Sep 2020 20:36:46 +0300 "Tzvetomir Stoyanov (VMware)" <tz.stoya...@gmail.com> wrote:
> Add a new libtraceevent man page with documentation of these debug APIs: > tep_print_printk > tep_print_funcs > tep_set_test_filters > tep_plugin_print_options > > Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoya...@gmail.com> > --- > .../Documentation/libtraceevent-debug.txt | 95 +++++++++++++++++++ > 1 file changed, 95 insertions(+) > create mode 100644 tools/lib/traceevent/Documentation/libtraceevent-debug.txt > > diff --git a/tools/lib/traceevent/Documentation/libtraceevent-debug.txt > b/tools/lib/traceevent/Documentation/libtraceevent-debug.txt > new file mode 100644 > index 000000000000..9a2d1ffa2d72 > --- /dev/null > +++ b/tools/lib/traceevent/Documentation/libtraceevent-debug.txt > @@ -0,0 +1,95 @@ > +libtraceevent(3) > +================ > + > +NAME > +---- > +tep_print_printk, tep_print_funcs, tep_set_test_filters, > tep_plugin_print_options - > +Print libtraceevent internal information. > + > +SYNOPSIS > +-------- > +[verse] > +-- > +*#include <event-parse.h>* > +*#include <trace-seq.h>* > + > +void *tep_print_printk*(struct tep_handle pass:[*]tep); > +void *tep_print_funcs*(struct tep_handle pass:[*]tep); > +void *tep_set_test_filters*(struct tep_handle pass:[*]tep, int test_filters); > +void *tep_plugin_print_options*(struct trace_seq pass:[*]s); > +-- > + > +DESCRIPTION > +----------- > +The _tep_print_printk()_ function prints the printk string formats that were > +stored for this tracing session. The _tep_ argument is trace event parser > context. > + > +The _tep_print_funcs()_ function prints the stored function name to address > mapping > +for this tracing session. The _tep_ argument is trace event parser context. > + > +The _tep_set_test_filters()_ function sets a flag to test a filter string. > If this > +flag is set, when _tep_filter_add_filter_str()_ API as called, it will print > the filter > +string instead of adding it. The _tep_ argument is trace event parser > context. > +The _test_filters_ argument is the test flag that will be set. > + > +The _tep_plugin_print_options()_ function writes a list of the registered > plugin options > +into _s_. > + > +EXAMPLE > +------- > +[source,c] > +-- > +#include <event-parse.h> > +#include <trace-seq.h> > +... > +struct tep_handle *tep = tep_alloc(); > +... > + tep_print_printk(tep); > +... > + tep_print_funcs(tep); > +... > +struct tep_event_filter *filter = tep_filter_alloc(tep); > + tep_set_test_filters(tep, 1); > + tep_filter_add_filter_str(filter, "sche d/sched_wakeup:target_cpu==1"); Did you mean to add that space in the middle of "sched"? ;-) Other than that, it looks good to me. Reviewed-by: Steven Rostedt (VMware) <rost...@goodmis.org> -- Steve > + tep_set_test_filters(tep, 0); > + tep_filter_free(filter); > +... > +struct trace_seq seq; > +trace_seq_init(&seq); > + > + tep_plugin_print_options(&s); > +... > +-- > + > +FILES > +----- > +[verse] > +-- > +*event-parse.h* > + Header file to include in order to have access to the library APIs. > +*-ltraceevent* > + Linker switch to add when building a program that uses the library. > +-- > + > +SEE ALSO > +-------- > +_libtraceevent(3)_, _trace-cmd(1)_ > + > +AUTHOR > +------ > +[verse] > +-- > +*Steven Rostedt* <rost...@goodmis.org>, author of *libtraceevent*. > +*Tzvetomir Stoyanov* <tz.stoya...@gmail.com>, author of this man page. > +-- > +REPORTING BUGS > +-------------- > +Report bugs to <linux-trace-de...@vger.kernel.org> > + > +LICENSE > +------- > +libtraceevent is Free Software licensed under the GNU LGPL 2.1 > + > +RESOURCES > +--------- > +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
