Add 'data_status' to record whether a dso has data
(i.e. an object file) as follows:
dso->data_status meaning
----------------------------------
0 don't know
-1 no data
1 has data
Signed-off-by: Adrian Hunter <[email protected]>
---
tools/perf/util/dso.c | 5 ++++-
tools/perf/util/dso.h | 1 +
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index fc006fe..91a4eb4 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -556,8 +556,11 @@ static ssize_t data_read_offset(struct dso *dso, u64
offset,
ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
u64 offset, u8 *data, ssize_t size)
{
- if (dso__data_fd(dso, machine) < 0)
+ if (dso__data_fd(dso, machine) < 0) {
+ dso->data.data_status = -1;
return -1;
+ }
+ dso->data.data_status = 1;
return data_read_offset(dso, offset, data, size);
}
diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index c239e86..c5257aa 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -104,6 +104,7 @@ struct dso {
struct {
struct rb_root cache;
int fd;
+ int data_status;
size_t file_size;
struct list_head open_entry;
} data;
--
1.8.3.2
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