Merge tag 'linux_kselftest-fixes-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fix from Shuah Khan:
 "Fixes event-filter-function.tc tracing test failure caused when a
  first run to sample events triggers kmem_cache_free which interferes
  with the rest of the test.

  Fix this by calling sample_events twice to eliminate the
  kmem_cache_free related noise from the sampling"

* tag 'linux_kselftest-fixes-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/tracing: Run sample events to clear page cache events

Author: torvalds

tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc

@@ -20,6 +20,10 @@ sample_events() {
 echo 0 > tracing_on
 echo 0 > events/enable
 
+# Clear functions caused by page cache; run sample_events twice
+sample_events
+sample_events
+
 echo "Get the most frequently calling function"
 echo > trace
 sample_events