tools/perf/builtin-buildid-list.c

   1 /*
   2  * builtin-buildid-list.c
   3  *
   4  * Builtin buildid-list command: list buildids in perf.data or in the running
   5  * kernel.
   6  *
   7  * Copyright (C) 2009, Red Hat Inc.
   8  * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
   9  */
  10 #include "builtin.h"
  11 #include "perf.h"
  12 #include "util/build-id.h"
  13 #include "util/cache.h"
  14 #include "util/debug.h"
  15 #include "util/parse-options.h"
  16 #include "util/session.h"
  17 #include "util/symbol.h"
  18
  19 static char const *input_name = "perf.data";
  20 static bool force;
  21 static bool show_kernel;
  22 static bool with_hits;
  23
  24 static const char * const buildid_list_usage[] = {
  25         "perf buildid-list [<options>]",
  26         NULL
  27 };
  28
  29 static const struct option options[] = {
  30         OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
  31         OPT_STRING('i', "input", &input_name, "file",
  32                     "input file name"),
  33         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
  34         OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
  35         OPT_INCR('v', "verbose", &verbose,
  36                     "be more verbose"),
  37         OPT_END()
  38 };
  39
  40 static int perf_session__list_build_ids(void)
  41 {
  42         struct perf_session *session;
  43
  44         session = perf_session__new(input_name, O_RDONLY, force, false,
  45                                     &build_id__mark_dso_hit_ops);
  46         if (session == NULL)
  47                 return -1;
  48
  49         if (with_hits)
  50                 perf_session__process_events(session, &build_id__mark_dso_hit_ops);
  51
  52         perf_session__fprintf_dsos_buildid(session, stdout, with_hits);
  53
  54         perf_session__delete(session);
  55         return 0;
  56 }
  57
  58 static int sysfs__fprintf_build_id(FILE *fp)
  59 {
  60         u8 kallsyms_build_id[BUILD_ID_SIZE];
  61         char sbuild_id[BUILD_ID_SIZE * 2 + 1];
  62
  63         if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
  64                                  sizeof(kallsyms_build_id)) != 0)
  65                 return -1;
  66
  67         build_id__sprintf(kallsyms_build_id, sizeof(kallsyms_build_id),
  68                           sbuild_id);
  69         fprintf(fp, "%s\n", sbuild_id);
  70         return 0;
  71 }
  72
  73 static int __cmd_buildid_list(void)
  74 {
  75
  76         if (show_kernel)
  77                 return sysfs__fprintf_build_id(stdout);
  78
  79         return perf_session__list_build_ids();
  80 }
  81
  82 int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
  83 {
  84         argc = parse_options(argc, argv, options, buildid_list_usage, 0);
  85         setup_pager();
  86         return __cmd_buildid_list();
  87 }