On Tue, Mar 19, 2019 at 5:56 PM Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx> wrote:
>
> The TRACECMD_OPTION_TIME_SHIFT is used when synchronizing trace time stamps between
> two trace.dat files. It contains multiple long long (time, offset) pairs, describing
> time stamps _offset_, measured in the given local _time_. The content of the option
> buffer is:
> first 4 bytes - integer, count of timestamp offsets
> long long array of size _count_, local time in which the offset is measured
> long long array of size _count_, offset of the time stamps
>
> Signed-off-by: Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx>
> ---
> include/trace-cmd/trace-cmd.h | 1 +
> lib/trace-cmd/trace-input.c | 127 +++++++++++++++++++++++++++++++++-
> 2 files changed, 126 insertions(+), 2 deletions(-)
>
> diff --git a/include/trace-cmd/trace-cmd.h b/include/trace-cmd/trace-cmd.h
> index f7c043a..5552396 100644
> --- a/include/trace-cmd/trace-cmd.h
> +++ b/include/trace-cmd/trace-cmd.h
> @@ -82,6 +82,7 @@ enum {
> TRACECMD_OPTION_HOOK,
> TRACECMD_OPTION_OFFSET,
> TRACECMD_OPTION_CPUCOUNT,
> + TRACECMD_OPTION_TIME_SHIFT,
> };
>
> enum {
> diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
> index 0a6e820..04f222d 100644
> --- a/lib/trace-cmd/trace-input.c
> +++ b/lib/trace-cmd/trace-input.c
> @@ -75,6 +75,11 @@ struct input_buffer_instance {
> size_t offset;
> };
>
> +struct ts_offset_sample {
> + long long time;
> + long long offset;
> +};
> +
> struct tracecmd_input {
> struct tep_handle *pevent;
> struct tep_plugin_list *plugin_list;
> @@ -92,6 +97,8 @@ struct tracecmd_input {
> bool use_pipe;
> struct cpu_data *cpu_data;
> long long ts_offset;
> + int ts_corr_count;
> + struct ts_offset_sample *ts_corr;
Nit:
ts_corr_count -> ts_samples_count
ts_corr -> ts_samples
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