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authorTom Zanussi <tzanussi@gmail.com>2010-04-02 00:59:22 -0400
committerIngo Molnar <mingo@elte.hu>2010-04-14 05:56:08 -0400
commitc7929e4727e8ff2d6fc8327188820e3b1c2f1dc3 (patch)
tree59f85cc7a5a381761f1583624f1ce2d62c060e5d /tools/perf/util/header.c
parent9215545e99d8c0b27323df2de504f4294bf5e407 (diff)
perf: Convert perf header build_ids into build_id events
Bypasses the build_id perf header code and replaces it with a synthesized event and processing function that accomplishes the same thing, used when reading/writing perf data to/from a pipe. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: fweisbec@gmail.com Cc: rostedt@goodmis.org Cc: k-keiichi@bx.jp.nec.com Cc: acme@ghostprotocols.net LKML-Reference: <1270184365-8281-9-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/header.c')
-rw-r--r--tools/perf/util/header.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index c6874ecc90b8..628173ba689e 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -986,3 +986,93 @@ int event__process_tracing_data(event_t *self,
986 986
987 return size_read + padding; 987 return size_read + padding;
988} 988}
989
990int event__synthesize_build_id(struct dso *pos, u16 misc,
991 event__handler_t process,
992 struct perf_session *session)
993{
994 event_t ev;
995 size_t len;
996 int err = 0;
997
998 if (!pos->hit)
999 return err;
1000
1001 memset(&ev, 0, sizeof(ev));
1002
1003 len = pos->long_name_len + 1;
1004 len = ALIGN(len, NAME_ALIGN);
1005 memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id));
1006 ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID;
1007 ev.build_id.header.misc = misc;
1008 ev.build_id.header.size = sizeof(ev.build_id) + len;
1009 memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
1010
1011 err = process(&ev, session);
1012
1013 return err;
1014}
1015
1016static int __event_synthesize_build_ids(struct list_head *head, u16 misc,
1017 event__handler_t process,
1018 struct perf_session *session)
1019{
1020 struct dso *pos;
1021
1022 dsos__for_each_with_build_id(pos, head) {
1023 int err;
1024 if (!pos->hit)
1025 continue;
1026
1027 err = event__synthesize_build_id(pos, misc, process, session);
1028 if (err < 0)
1029 return err;
1030 }
1031
1032 return 0;
1033}
1034
1035int event__synthesize_build_ids(event__handler_t process,
1036 struct perf_session *session)
1037{
1038 int err;
1039
1040 if (!dsos__read_build_ids(true))
1041 return 0;
1042
1043 err = __event_synthesize_build_ids(&dsos__kernel,
1044 PERF_RECORD_MISC_KERNEL,
1045 process, session);
1046 if (err == 0)
1047 err = __event_synthesize_build_ids(&dsos__user,
1048 PERF_RECORD_MISC_USER,
1049 process, session);
1050
1051 if (err < 0) {
1052 pr_debug("failed to synthesize build ids\n");
1053 return err;
1054 }
1055
1056 dsos__cache_build_ids();
1057
1058 return 0;
1059}
1060
1061int event__process_build_id(event_t *self,
1062 struct perf_session *session __unused)
1063{
1064 struct list_head *head = &dsos__user;
1065 struct dso *dso;
1066
1067 if (self->build_id.header.misc & PERF_RECORD_MISC_KERNEL)
1068 head = &dsos__kernel;
1069
1070 dso = __dsos__findnew(head, self->build_id.filename);
1071 if (dso != NULL) {
1072 dso__set_build_id(dso, &self->build_id.build_id);
1073 if (head == &dsos__kernel && self->build_id.filename[0] == '[')
1074 dso->kernel = 1;
1075 }
1076
1077 return 0;
1078}