Read multiplier and shift, required for TSC clock to nanosecond
conversion from the metadata of the trace file and save them in
the tracecmd input file handler.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@xxxxxxxxx>
---
lib/trace-cmd/trace-input.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 2093a3dc..ebc28f7b 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -99,6 +99,12 @@ struct host_trace_info {
struct ts_offset_sample *ts_samples;
};
+struct tsc2nsec {
+ int mult;
+ int shift;
+ unsigned long long offset;
+};
+
struct tracecmd_input {
struct tep_handle *pevent;
unsigned long file_state;
@@ -118,6 +124,8 @@ struct tracecmd_input {
bool use_pipe;
struct cpu_data *cpu_data;
long long ts_offset;
+ struct tsc2nsec tsc_calc;
+
struct host_trace_info host;
double ts2secs;
char * cpustats;
@@ -2674,6 +2682,16 @@ static int handle_options(struct tracecmd_input *handle)
case TRACECMD_OPTION_GUEST:
trace_guest_load(handle, buf, size);
break;
+ case TRACECMD_OPTION_TSC2NSEC:
+ if (size < 16)
+ break;
+ handle->tsc_calc.mult = tep_read_number(handle->pevent,
+ buf, 4);
+ handle->tsc_calc.shift = tep_read_number(handle->pevent,
+ buf + 4, 4);
+ handle->tsc_calc.offset = tep_read_number(handle->pevent,
+ buf + 8, 8);
+ break;
default:
warning("unknown option %d", option);
break;
--
2.30.2
|