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| author | Daniel Bristot de Oliveira <bristot@kernel.org> | 2022-03-02 22:01:39 +0300 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-03-15 21:36:50 +0300 |
| commit | 7d0dc9576dc3817c483b408715e506c3e9f37bed (patch) | |
| tree | e611e595de3762767ed6afce4c565c5b5a566d3c /tools/tracing/rtla/src/utils.h | |
| parent | 7d38c35167c58153e8b5bea839616d00e90564b9 (diff) | |
| download | linux-7d0dc9576dc3817c483b408715e506c3e9f37bed.tar.xz | |
rtla/timerlat: Add --dma-latency option
Add the --dma-latency to set /dev/cpu_dma_latency to the
specified value, this aims to avoid having exit from idle
states latencies that could be influencing the analysis.
Link: https://lkml.kernel.org/r/72ddb0d913459f13217086dadafad88a7c46dd28.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'tools/tracing/rtla/src/utils.h')
| -rw-r--r-- | tools/tracing/rtla/src/utils.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/tracing/rtla/src/utils.h b/tools/tracing/rtla/src/utils.h index 9aa962319ca2..fa08e374870a 100644 --- a/tools/tracing/rtla/src/utils.h +++ b/tools/tracing/rtla/src/utils.h @@ -54,3 +54,4 @@ struct sched_attr { int parse_prio(char *arg, struct sched_attr *sched_param); int set_comm_sched_attr(const char *comm, struct sched_attr *attr); +int set_cpu_dma_latency(int32_t latency); |