~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/tools/perf/util/trace-event.c

Version: ~ [ linux-5.0-rc6 ] ~ [ linux-4.20.10 ] ~ [ linux-4.19.23 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.101 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.158 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.174 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.134 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.63 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 
  2 #include <stdio.h>
  3 #include <unistd.h>
  4 #include <stdlib.h>
  5 #include <errno.h>
  6 #include <sys/types.h>
  7 #include <sys/stat.h>
  8 #include <fcntl.h>
  9 #include <linux/kernel.h>
 10 #include <traceevent/event-parse.h>
 11 #include "trace-event.h"
 12 #include "machine.h"
 13 #include "util.h"
 14 
 15 /*
 16  * global trace_event object used by trace_event__tp_format
 17  *
 18  * TODO There's no cleanup call for this. Add some sort of
 19  * __exit function support and call trace_event__cleanup
 20  * there.
 21  */
 22 static struct trace_event tevent;
 23 static bool tevent_initialized;
 24 
 25 int trace_event__init(struct trace_event *t)
 26 {
 27         struct pevent *pevent = pevent_alloc();
 28 
 29         if (pevent) {
 30                 t->plugin_list = traceevent_load_plugins(pevent);
 31                 t->pevent  = pevent;
 32         }
 33 
 34         return pevent ? 0 : -1;
 35 }
 36 
 37 static int trace_event__init2(void)
 38 {
 39         int be = traceevent_host_bigendian();
 40         struct pevent *pevent;
 41 
 42         if (trace_event__init(&tevent))
 43                 return -1;
 44 
 45         pevent = tevent.pevent;
 46         pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
 47         pevent_set_file_bigendian(pevent, be);
 48         pevent_set_host_bigendian(pevent, be);
 49         tevent_initialized = true;
 50         return 0;
 51 }
 52 
 53 int trace_event__register_resolver(struct machine *machine,
 54                                    pevent_func_resolver_t *func)
 55 {
 56         if (!tevent_initialized && trace_event__init2())
 57                 return -1;
 58 
 59         return pevent_set_function_resolver(tevent.pevent, func, machine);
 60 }
 61 
 62 void trace_event__cleanup(struct trace_event *t)
 63 {
 64         traceevent_unload_plugins(t->plugin_list, t->pevent);
 65         pevent_free(t->pevent);
 66 }
 67 
 68 static struct event_format*
 69 tp_format(const char *sys, const char *name)
 70 {
 71         struct pevent *pevent = tevent.pevent;
 72         struct event_format *event = NULL;
 73         char path[PATH_MAX];
 74         size_t size;
 75         char *data;
 76 
 77         scnprintf(path, PATH_MAX, "%s/%s/%s/format",
 78                   tracing_events_path, sys, name);
 79 
 80         if (filename__read_str(path, &data, &size))
 81                 return NULL;
 82 
 83         pevent_parse_format(pevent, &event, data, size, sys);
 84 
 85         free(data);
 86         return event;
 87 }
 88 
 89 struct event_format*
 90 trace_event__tp_format(const char *sys, const char *name)
 91 {
 92         if (!tevent_initialized && trace_event__init2())
 93                 return NULL;
 94 
 95         return tp_format(sys, name);
 96 }
 97 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp