From 977ec47de06bdcb24f01c93bc125b7c6c221a1c5 Mon Sep 17 00:00:00 2001 From: "Emilio G. Cota" Date: Fri, 14 Oct 2016 11:54:51 +0200 Subject: qht-bench: relax test_start/stop atomic accesses test_start/stop are used only as flags to loop on. Barriers are unnecessary, since no dependent data is transferred among threads apart from the flags themselves. This commit relaxes the three accesses to test_start/stop that were not yet relaxed. Signed-off-by: Emilio G. Cota --- tests/qht-bench.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tests') diff --git a/tests/qht-bench.c b/tests/qht-bench.c index 76360a0..2afa09d 100644 --- a/tests/qht-bench.c +++ b/tests/qht-bench.c @@ -193,7 +193,7 @@ static void *thread_func(void *p) rcu_register_thread(); atomic_inc(&n_ready_threads); - while (!atomic_mb_read(&test_start)) { + while (!atomic_read(&test_start)) { cpu_relax(); } @@ -393,11 +393,11 @@ static void run_test(void) while (atomic_read(&n_ready_threads) != n_rw_threads + n_rz_threads) { cpu_relax(); } - atomic_mb_set(&test_start, true); + atomic_set(&test_start, true); do { remaining = sleep(duration); } while (remaining); - atomic_mb_set(&test_stop, true); + atomic_set(&test_stop, true); for (i = 0; i < n_rw_threads; i++) { qemu_thread_join(&rw_threads[i]); -- cgit v1.1