Commit a80db1f8 authored by Tomas Glozar's avatar Tomas Glozar Committed by Steven Rostedt (Google)
Browse files

rtla/tests: Test timerlat -P option using actions 

The -P option is used to set priority of osnoise and timerlat threads.

Extend the test for -P with --on-threshold calling a script that looks
for running timerlat threads and checks if their priority is set
correctly.

As --on-threshold is only supported by timerlat at the moment, this is
only implemented there so far.

Cc: John Kacur <jkacur@redhat.com>
Cc: Luis Goncalves <lgoncalv@redhat.com>
Cc: Chang Yin <cyin@redhat.com>
Cc: Costa Shulyupin <costa.shul@redhat.com>
Link: https://lore.kernel.org/20250725133817.59237-3-tglozar@redhat.com


Signed-off-by: default avatarTomas Glozar <tglozar@redhat.com>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 892ae5f8

tools/tracing/rtla/tests/engine.sh

+1 −1
Original line number Diff line number Diff line
@@ -69,7 +69,7 @@ check() { 
			# Add rtla output and exit code as comments in case of failure

			echo "$result" | col -b | while read line; do echo "# $line"; done

			printf "#\n# exit code %s\n" $exitcode

			[ -n "$expected_output" ] && \

			[ -n "$expected_output" ] && [ $grep_result -ne 0 ] && \

				printf "# Output match failed: \"%s\"\n" "$expected_output"

		fi

	fi

tools/tracing/rtla/tests/scripts/check-priority.sh

0 → 100755
+8 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0

pids="$(pgrep ^$1)" || exit 1

for pid in $pids

do

  chrt -p $pid | cut -d ':' -f 2 | head -n1 | grep "^ $2\$" >/dev/null

  chrt -p $pid | cut -d ':' -f 2 | tail -n1 | grep "^ $3\$" >/dev/null

done && echo "Priorities are set correctly"

tools/tracing/rtla/tests/timerlat.t

+2 −1
Original line number Diff line number Diff line
@@ -25,7 +25,8 @@ check "verify help page" \ 
check "verify -s/--stack" \

	"timerlat top -s 3 -T 10 -t" 2 "Blocking thread stack trace"

check "verify -P/--priority" \

	"timerlat top -P F:1 -c 0 -d 10s -q"

	"timerlat top -P F:1 -c 0 -d 10s -q -T 1 --on-threshold shell,command=\"tests/scripts/check-priority.sh timerlatu/ SCHED_FIFO 1\"" \

	2 "Priorities are set correctly"

check "test in nanoseconds" \

	"timerlat top -i 2 -c 0 -n -d 10s" 2 "ns"

check "set the automatic trace mode" \