tracing: add global-clock option to provide cross CPU clock to traces

Impact: feature to allow better serialized clock

This patch adds an option called "global-clock" that will allow
the tracer to switch to a slower but more accurate (across CPUs)
clock.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index b0ecad8ecc34..26a7a28ca110 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -667,6 +667,7 @@ enum trace_iterator_flags {
         TRACE_ITER_PRINTK_MSGONLY       = 0x10000,
         TRACE_ITER_CONTEXT_INFO         = 0x20000, /* Print pid/cpu/time */
         TRACE_ITER_LATENCY_FMT          = 0x40000,
+        TRACE_ITER_GLOBAL_CLK           = 0x80000,
 };
 
 /*