Commit 61273832 authored by Daniel Bristot de Oliveira's avatar Daniel Bristot de Oliveira Committed by Steven Rostedt (Google)
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Documentation: Add tools/rtla timerlat -u option documentation 

Add the -u/--user-thread option documentation for timerlat top/hist.

Link: https://lkml.kernel.org/r/bf727c8ccb8f50792200ae620141e047edf4af7a.1686066600.git.bristot@kernel.org



Cc: William White <chwhite@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Tested-by: default avatarJuri Lelli <juri.lelli@redhat.com>
Signed-off-by: default avatarDaniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent ed774f74

Documentation/tools/rtla/common_timerlat_options.rst

+7 −0
Original line number Diff line number Diff line
@@ -26,3 +26,10 @@ 
        Set the /dev/cpu_dma_latency to *us*, aiming to bound exit from idle latencies.

        *cyclictest* sets this value to *0* by default, use **--dma-latency** *0* to have

        similar results.



**-u**, **--user-threads**



        Set timerlat to run without a workload, and then dispatches user-space workloads

        to wait on the timerlat_fd. Once the workload is awakes, it goes to sleep again

        adding so the measurement for the kernel-to-user and user-to-kernel to the tracer

        output.