[nrf fromlist] tests: kernel: usage: Adjustments for slower platforms

Adjusting sleep times as core is to slow too run
the test with the default system clock frequency,
and fixing outdated comment in the test manifest file.

Upstream PR #: 100175

Signed-off-by: Paweł Pelikan <[email protected]>

Author: ppelikan-nordic

tests/kernel/usage/thread_runtime_stats/src/test_thread_runtime_stats.c

@@ -87,7 +87,11 @@ ZTEST(usage_api, test_all_stats_usage)
 
 	k_thread_runtime_stats_all_get(&stats2);
 
+#if defined(CONFIG_RISCV)
+	k_sleep(K_TICKS(3));  /* Helper runs for 3 ticks - on slower platforms */
+#else
 	k_sleep(K_TICKS(2));  /* Helper runs for 2 ticks */
+#endif
 
 	k_thread_runtime_stats_all_get(&stats3);
 

tests/kernel/usage/thread_runtime_stats/testcase.yaml

@@ -3,7 +3,7 @@ tests:
     tags: kernel
     # The following architectures are excluded as they have boards that
     # exhibit precision timing anomalies related to emulation.
-    #     posix, riscv32, sparc
+    #     posix, sparc
     # The following architectures are exluded as the necessary
     # thread runtime statistic hooks do not yet exist.
     #     mips