builtin-buildid-list.c 3.0 KB

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  1. /*
  2. * builtin-buildid-list.c
  3. *
  4. * Builtin buildid-list command: list buildids in perf.data, in the running
  5. * kernel and in ELF files.
  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/debug.h"
  14. #include "util/dso.h"
  15. #include <subcmd/pager.h>
  16. #include <subcmd/parse-options.h>
  17. #include "util/session.h"
  18. #include "util/symbol.h"
  19. #include "util/data.h"
  20. #include <errno.h>
  21. #include <linux/err.h>
  22. static int sysfs__fprintf_build_id(FILE *fp)
  23. {
  24. char sbuild_id[SBUILD_ID_SIZE];
  25. int ret;
  26. ret = sysfs__sprintf_build_id("/", sbuild_id);
  27. if (ret != sizeof(sbuild_id))
  28. return ret < 0 ? ret : -EINVAL;
  29. return fprintf(fp, "%s\n", sbuild_id);
  30. }
  31. static int filename__fprintf_build_id(const char *name, FILE *fp)
  32. {
  33. char sbuild_id[SBUILD_ID_SIZE];
  34. int ret;
  35. ret = filename__sprintf_build_id(name, sbuild_id);
  36. if (ret != sizeof(sbuild_id))
  37. return ret < 0 ? ret : -EINVAL;
  38. return fprintf(fp, "%s\n", sbuild_id);
  39. }
  40. static bool dso__skip_buildid(struct dso *dso, int with_hits)
  41. {
  42. return with_hits && !dso->hit;
  43. }
  44. static int perf_session__list_build_ids(bool force, bool with_hits)
  45. {
  46. struct perf_session *session;
  47. struct perf_data data = {
  48. .path = input_name,
  49. .mode = PERF_DATA_MODE_READ,
  50. .force = force,
  51. };
  52. symbol__elf_init();
  53. /*
  54. * See if this is an ELF file first:
  55. */
  56. if (filename__fprintf_build_id(input_name, stdout) > 0)
  57. goto out;
  58. session = perf_session__new(&data, false, &build_id__mark_dso_hit_ops);
  59. if (IS_ERR(session))
  60. return PTR_ERR(session);
  61. /*
  62. * We take all buildids when the file contains AUX area tracing data
  63. * because we do not decode the trace because it would take too long.
  64. */
  65. if (!perf_data__is_pipe(&data) &&
  66. perf_header__has_feat(&session->header, HEADER_AUXTRACE))
  67. with_hits = false;
  68. /*
  69. * in pipe-mode, the only way to get the buildids is to parse
  70. * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
  71. */
  72. if (with_hits || perf_data__is_pipe(&data))
  73. perf_session__process_events(session);
  74. perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
  75. perf_session__delete(session);
  76. out:
  77. return 0;
  78. }
  79. int cmd_buildid_list(int argc, const char **argv)
  80. {
  81. bool show_kernel = false;
  82. bool with_hits = false;
  83. bool force = false;
  84. const struct option options[] = {
  85. OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
  86. OPT_STRING('i', "input", &input_name, "file", "input file name"),
  87. OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
  88. OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
  89. OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  90. OPT_END()
  91. };
  92. const char * const buildid_list_usage[] = {
  93. "perf buildid-list [<options>]",
  94. NULL
  95. };
  96. argc = parse_options(argc, argv, options, buildid_list_usage, 0);
  97. setup_pager();
  98. if (show_kernel)
  99. return !(sysfs__fprintf_build_id(stdout) > 0);
  100. return perf_session__list_build_ids(force, with_hits);
  101. }