Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / builtin-buildid-list.c

diff --git a/kernel/tools/perf/builtin-buildid-list.c b/kernel/tools/perf/builtin-buildid-list.c
new file mode 100644 (file)
index 0000000..feb420f
--- /dev/null
+++ b/kernel/tools/perf/builtin-buildid-list.c
@@ -0,0 +1,111 @@
+/*
+ * builtin-buildid-list.c
+ *
+ * Builtin buildid-list command: list buildids in perf.data, in the running
+ * kernel and in ELF files.
+ *
+ * Copyright (C) 2009, Red Hat Inc.
+ * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
+ */
+#include "builtin.h"
+#include "perf.h"
+#include "util/build-id.h"
+#include "util/cache.h"
+#include "util/debug.h"
+#include "util/parse-options.h"
+#include "util/session.h"
+#include "util/symbol.h"
+#include "util/data.h"
+
+static int sysfs__fprintf_build_id(FILE *fp)
+{
+       u8 kallsyms_build_id[BUILD_ID_SIZE];
+       char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+
+       if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
+                                sizeof(kallsyms_build_id)) != 0)
+               return -1;
+
+       build_id__sprintf(kallsyms_build_id, sizeof(kallsyms_build_id),
+                         sbuild_id);
+       fprintf(fp, "%s\n", sbuild_id);
+       return 0;
+}
+
+static int filename__fprintf_build_id(const char *name, FILE *fp)
+{
+       u8 build_id[BUILD_ID_SIZE];
+       char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+
+       if (filename__read_build_id(name, build_id,
+                                   sizeof(build_id)) != sizeof(build_id))
+               return 0;
+
+       build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
+       return fprintf(fp, "%s\n", sbuild_id);
+}
+
+static bool dso__skip_buildid(struct dso *dso, int with_hits)
+{
+       return with_hits && !dso->hit;
+}
+
+static int perf_session__list_build_ids(bool force, bool with_hits)
+{
+       struct perf_session *session;
+       struct perf_data_file file = {
+               .path  = input_name,
+               .mode  = PERF_DATA_MODE_READ,
+               .force = force,
+       };
+
+       symbol__elf_init();
+       /*
+        * See if this is an ELF file first:
+        */
+       if (filename__fprintf_build_id(input_name, stdout))
+               goto out;
+
+       session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops);
+       if (session == NULL)
+               return -1;
+       /*
+        * in pipe-mode, the only way to get the buildids is to parse
+        * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
+        */
+       if (with_hits || perf_data_file__is_pipe(&file))
+               perf_session__process_events(session);
+
+       perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
+       perf_session__delete(session);
+out:
+       return 0;
+}
+
+int cmd_buildid_list(int argc, const char **argv,
+                    const char *prefix __maybe_unused)
+{
+       bool show_kernel = false;
+       bool with_hits = false;
+       bool force = false;
+       const struct option options[] = {
+       OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
+       OPT_STRING('i', "input", &input_name, "file", "input file name"),
+       OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
+       OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
+       OPT_INCR('v', "verbose", &verbose, "be more verbose"),
+       OPT_END()
+       };
+       const char * const buildid_list_usage[] = {
+               "perf buildid-list [<options>]",
+               NULL
+       };
+
+       argc = parse_options(argc, argv, options, buildid_list_usage, 0);
+       setup_pager();
+
+       if (show_kernel)
+               return sysfs__fprintf_build_id(stdout);
+
+       return perf_session__list_build_ids(force, with_hits);
+}