If you recorded information completely in an instance then trace-hist wouldn't think your trace.dat file had any events because it didn't know about instances. Fix this.
Signed-off-by: Josef Bacik <[email protected]> --- trace-hist.c | 33 +++++++++++++++++++++++++-------- 1 file changed, 25 insertions(+), 8 deletions(-) diff --git a/trace-hist.c b/trace-hist.c index 574549e..2a2e780 100644 --- a/trace-hist.c +++ b/trace-hist.c @@ -954,13 +954,6 @@ static void do_trace_hist(struct tracecmd_input *handle) int cpu; int ret; - ret = tracecmd_init_data(handle); - if (ret < 0) - die("failed to init data"); - - if (ret > 0) - die("trace-cmd hist does not work with latency traces\n"); - cpus = tracecmd_cpus(handle); /* Need to get any event */ @@ -1025,6 +1018,7 @@ void trace_hist(int argc, char **argv) { struct tracecmd_input *handle; const char *input_file = NULL; + int instances; int ret; for (;;) { @@ -1067,7 +1061,30 @@ void trace_hist(int argc, char **argv) if (ret) return; - do_trace_hist(handle); + ret = tracecmd_init_data(handle); + if (ret < 0) + die("failed to init data"); + + if (ret > 0) + die("trace-cmd hist does not work with latency traces\n"); + + instances = tracecmd_buffer_instances(handle); + if (instances) { + struct tracecmd_input *new_handle; + int i; + + for (i = 0; i < instances; i++) { + new_handle = tracecmd_buffer_instance_handle(handle, i); + if (!new_handle) { + warning("could not retrieve handle %d", i); + continue; + } + do_trace_hist(new_handle); + tracecmd_close(new_handle); + } + } else { + do_trace_hist(handle); + } tracecmd_close(handle); } -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
