A new library API is introduced, to copy buffers description between
trace files:
tracecmd_copy_buffer_descr()
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@xxxxxxxxx>
---
lib/trace-cmd/include/private/trace-cmd-private.h | 2 ++
lib/trace-cmd/trace-input.c | 13 +++++++++++++
2 files changed, 15 insertions(+)
diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index 8ff46d52..4930063e 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -189,6 +189,8 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle,
struct tracecmd_output *out_handle,
enum tracecmd_file_states start_state,
enum tracecmd_file_states end_state);
+int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle);
void tracecmd_set_flag(struct tracecmd_input *handle, int flag);
void tracecmd_clear_flag(struct tracecmd_input *handle, int flag);
unsigned long tracecmd_get_flags(struct tracecmd_input *handle);
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index cde613f3..63a4e7f2 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -4890,6 +4890,19 @@ int tracecmd_copy_headers(struct tracecmd_input *in_handle,
return ret < 0 ? -1 : 0;
}
+int tracecmd_copy_buffer_descr(struct tracecmd_input *in_handle,
+ struct tracecmd_output *out_handle)
+{
+ int i;
+
+ if (tracecmd_get_out_file_version(out_handle) >= FILE_VERSION_SECTIONS)
+ return 0;
+
+ for (i = 0; i < in_handle->nr_buffers; i++)
+ tracecmd_add_buffer_info(out_handle, in_handle->buffers[i].name, 0);
+ return tracecmd_write_buffer_info(out_handle);
+}
+
/**
* tracecmd_record_at_buffer_start - return true if record is first on subbuffer
* @handle: input handle for the trace.dat file
--
2.31.1
|