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rtla/timerlat: Do not set params->user_workload with -U

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Since commit fb9e90a67e ("rtla/timerlat: Make user-space threads
the default"), rtla-timerlat has been defaulting to
params->user_workload if neither that or params->kernel_workload is set.
This has unintentionally made -U, which sets only params->user_hist/top
but not params->user_workload, to behave like -u unless -k is set,
preventing the user from running a custom workload.

Example:
$ rtla timerlat hist -U -c 0 &
[1] 7413
$ python sample/timerlat_load.py 0
Error opening timerlat fd, did you run timerlat -U?
$ ps | grep timerlatu
7415 pts/4    00:00:00 timerlatu/0

Fix the issue by checking for params->user_top/hist instead of
params->user_workload when setting default thread mode.

Link: https://lore.kernel.org/20241021123140.14652-1-tglozar@redhat.com
Fixes: fb9e90a67e ("rtla/timerlat: Make user-space threads the default")
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Tomas Glozar 2024-10-21 14:31:40 +02:00 committed by Steven Rostedt (Google)
parent 13216486e3
commit fcbc60d7dc
2 changed files with 2 additions and 2 deletions
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2
tools/tracing/rtla/src/timerlat_hist.c
View File

@ -1073,7 +1073,7 @@ timerlat_hist_apply_config(struct osnoise_tool *tool, struct timerlat_hist_param
* If the user did not specify a type of thread, try user-threads first.
* Fall back to kernel threads otherwise.
*/
if (!params->kernel_workload && !params->user_workload) {
if (!params->kernel_workload && !params->user_hist) {
retval = tracefs_file_exists(NULL, "osnoise/per_cpu/cpu0/timerlat_fd");
if (retval) {
debug_msg("User-space interface detected, setting user-threads\n");

2
tools/tracing/rtla/src/timerlat_top.c
View File

@ -839,7 +839,7 @@ timerlat_top_apply_config(struct osnoise_tool *top, struct timerlat_top_params *
* If the user did not specify a type of thread, try user-threads first.
* Fall back to kernel threads otherwise.
*/
if (!params->kernel_workload && !params->user_workload) {
if (!params->kernel_workload && !params->user_top) {
retval = tracefs_file_exists(NULL, "osnoise/per_cpu/cpu0/timerlat_fd");
if (retval) {
debug_msg("User-space interface detected, setting user-threads\n");