summaryrefslogtreecommitdiff
path: root/tools/perf/util/build-id.c
diff options
context:
space:
mode:
authorArnaldo Carvalho de Melo <acme@redhat.com>2010-02-03 16:52:04 -0200
committerIngo Molnar <mingo@elte.hu>2010-02-04 09:33:26 +0100
commit7b2567c1f57c059de29d3f2ca03aca84473865c8 (patch)
tree9cd0a424d666c921c1d46dcdb648313cb36ec1da /tools/perf/util/build-id.c
parent8ad94c6052649a8e32120b464eefa0ffd8f2f04f (diff)
perf build-id: Move the routine to find DSOs with hits to the lib
Because 'perf record' will have to find the build-ids in after we stop recording, so as to reduce even more the impact in the workload while we do the measurement. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1265223128-11786-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/build-id.c')
-rw-r--r--tools/perf/util/build-id.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
new file mode 100644
index 000000000000..04904b35ba81
--- /dev/null
+++ b/tools/perf/util/build-id.c
@@ -0,0 +1,39 @@
+/*
+ * build-id.c
+ *
+ * build-id support
+ *
+ * Copyright (C) 2009, 2010 Red Hat Inc.
+ * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com>
+ */
+#include "build-id.h"
+#include "event.h"
+#include "symbol.h"
+#include <linux/kernel.h>
+
+static int build_id__mark_dso_hit(event_t *event, struct perf_session *session)
+{
+ struct addr_location al;
+ u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct thread *thread = perf_session__findnew(session, event->ip.pid);
+
+ if (thread == NULL) {
+ pr_err("problem processing %d event, skipping it.\n",
+ event->header.type);
+ return -1;
+ }
+
+ thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
+ event->ip.ip, &al);
+
+ if (al.map != NULL)
+ al.map->dso->hit = 1;
+
+ return 0;
+}
+
+struct perf_event_ops build_id__mark_dso_hit_ops = {
+ .sample = build_id__mark_dso_hit,
+ .mmap = event__process_mmap,
+ .fork = event__process_task,
+};