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-rw-r--r--test/syscalls/linux/readv.cc4
1 files changed, 3 insertions, 1 deletions
diff --git a/test/syscalls/linux/readv.cc b/test/syscalls/linux/readv.cc
index 4069cbc7e..baaf9f757 100644
--- a/test/syscalls/linux/readv.cc
+++ b/test/syscalls/linux/readv.cc
@@ -254,7 +254,9 @@ TEST_F(ReadvTest, IovecOutsideTaskAddressRangeInNonemptyArray) {
// This test depends on the maximum extent of a single readv() syscall, so
// we can't tolerate interruption from saving.
TEST(ReadvTestNoFixture, TruncatedAtMax_NoRandomSave) {
- // Ensure that we won't be interrupted by ITIMER_PROF.
+ // Ensure that we won't be interrupted by ITIMER_PROF. This is particularly
+ // important in environments where automated profiling tools may start
+ // ITIMER_PROF automatically.
struct itimerval itv = {};
auto const cleanup_itimer =
ASSERT_NO_ERRNO_AND_VALUE(ScopedItimer(ITIMER_PROF, itv));