| Message ID | bf727c8ccb8f50792200ae620141e047edf4af7a.1686066600.git.bristot@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 6127383217741615f3450b684ecbee1ff570ee98 |
| Headers | show |
| Series | rtla improvements | expand |
diff --git a/Documentation/tools/rtla/common_timerlat_options.rst b/Documentation/tools/rtla/common_timerlat_options.rst index bacdea6de7a3..88506b397c2d 100644 --- a/Documentation/tools/rtla/common_timerlat_options.rst +++ b/Documentation/tools/rtla/common_timerlat_options.rst @@ -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.
Add the -u/--user-thread option documentation for timerlat top/hist. Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Daniel Bristot de Oliveira <bristot@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> --- Documentation/tools/rtla/common_timerlat_options.rst | 7 +++++++ 1 file changed, 7 insertions(+)