The timerlat tracer documentation mentions that threads are created with
real-time priority, but does not mention which priority and scheduling
class is used.
Add the information so that users do not have to look it up in
trace_osnoise.c.
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
---
Documentation/trace/timerlat-tracer.rst | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/Documentation/trace/timerlat-tracer.rst b/Documentation/trace/timerlat-tracer.rst
index 53a56823e903..68d429d454a5 100644
--- a/Documentation/trace/timerlat-tracer.rst
+++ b/Documentation/trace/timerlat-tracer.rst
@@ -43,12 +43,12 @@ It is possible to follow the trace by reading the trace file::
<...>-868 [001] .... 54.030347: #2 context thread timer_latency 4351 ns
-The tracer creates a per-cpu kernel thread with real-time priority that
-prints two lines at every activation. The first is the *timer latency*
-observed at the *hardirq* context before the activation of the thread.
-The second is the *timer latency* observed by the thread. The ACTIVATION
-ID field serves to relate the *irq* execution to its respective *thread*
-execution.
+The tracer creates a per-cpu kernel thread with real-time priority
+SCHED_FIFO:95 that prints two lines at every activation. The first is
+the *timer latency* observed at the *hardirq* context before the activation
+of the thread. The second is the *timer latency* observed by the thread.
+The ACTIVATION ID field serves to relate the *irq* execution to its
+respective *thread* execution.
The *irq*/*thread* splitting is important to clarify in which context
the unexpected high value is coming from. The *irq* context can be
--
2.51.0