update rcu

[lttv.git] / tests / kernel / test-cmpxchg-nolock2.c

diff --git a/tests/kernel/test-cmpxchg-nolock2.c b/tests/kernel/test-cmpxchg-nolock2.c
index fcae83e44fd546acefd4bd1e910d58b5bb207120..5a19f73569e981a0b1fb80994653b274092e95fc 100644 (file)
--- a/tests/kernel/test-cmpxchg-nolock2.c
+++ b/tests/kernel/test-cmpxchg-nolock2.c
@@ -100,6 +100,64 @@ static void do_test_cmpxchg(void)
        printk(KERN_ALERT "-> non locked cmpxchg takes %llu cycles\n", time);
        printk(KERN_ALERT "test end\n");
 }
+static void do_test_sync_inc(void)
+{
+       int ret;
+       long flags;
+       unsigned int i;
+       cycles_t time1, time2, time;
+       long rem;
+       atomic_t val;
+
+       local_irq_save(flags);
+       preempt_disable();
+       time1 = get_cycles();
+       for (i = 0; i < NR_LOOPS; i++) {
+               ret = atomic_add_return(10, &val);
+       }
+       time2 = get_cycles();
+       local_irq_restore(flags);
+       preempt_enable();
+       time = time2 - time1;
+
+       printk(KERN_ALERT "test results: time for locked add return\n");
+       printk(KERN_ALERT "number of loops: %d\n", NR_LOOPS);
+       printk(KERN_ALERT "total time: %llu\n", time);
+       time = div_long_long_rem(time, NR_LOOPS, &rem);
+       printk(KERN_ALERT "-> locked add return takes %llu cycles\n", time);
+       printk(KERN_ALERT "test end\n");
+}
+
+
+static void do_test_inc(void)
+{
+       int ret;
+       long flags;
+       unsigned int i;
+       cycles_t time1, time2, time;
+       long rem;
+       local_t loc_val;
+
+       local_irq_save(flags);
+       preempt_disable();
+       time1 = get_cycles();
+       for (i = 0; i < NR_LOOPS; i++) {
+               ret = local_add_return(10, &loc_val);
+       }
+       time2 = get_cycles();
+       local_irq_restore(flags);
+       preempt_enable();
+       time = time2 - time1;
+
+       printk(KERN_ALERT "test results: time for non locked add return\n");
+       printk(KERN_ALERT "number of loops: %d\n", NR_LOOPS);
+       printk(KERN_ALERT "total time: %llu\n", time);
+       time = div_long_long_rem(time, NR_LOOPS, &rem);
+       printk(KERN_ALERT "-> non locked add return takes %llu cycles\n", time);
+       printk(KERN_ALERT "test end\n");
+}
+
+
 
 /*
  * This test will have a higher standard deviation due to incoming interrupts.
@@ -195,6 +253,8 @@ static int ltt_test_init(void)
        do_testbaseline();
        do_test_sync_cmpxchg();
        do_test_cmpxchg();
+       do_test_sync_inc();
+       do_test_inc();
        do_test_enable_int();
        do_test_disable_int();
        do_test_int();