ifneq ($(KERNELRELEASE),)
ifneq ($(CONFIG_LTT),)
- obj-m := test-time-probe.o test-l1-hit-probe.o test-int-response.o test-instrument-size-small.o test-instrument-size-med.o test-instrument-size-big.o test-time-precision.o
+ obj-m := ltt-facility-loader-tests.o
+ obj-m := test-time-probe.o
+ #test-l1-hit-probe.o test-int-response.o test-instrument-size-small.o test-instrument-size-med.o test-instrument-size-big.o test-time-precision.o
endif
else
*/
+#include "ltt-facility-tests.h"
+
#include <linux/init.h>
#include <linux/module.h>
#include <linux/ltt-core.h>
+/* Event logged : 4 bytes + 20 bytes header = 24 bytes. Let's use 1MB of
+ * buffers. 1MB / 24bytes = 43690. So, if we write 20000 event, we should not
+ * lose events. Check event lost count after tests. */
+
+#define NR_LOOPS 20000
+
static int ltt_test_init(void)
{
+ unsigned int i;
+ cycles_t time1, time2, time;
+ cycles_t max_time = 0, min_time = 18446744073709551615ULL; /* (2^64)-1 */
+ cycles_t tot_time = 0;
+ unsigned long flags;
printk(KERN_ALERT "test init\n");
-
- return 0;
+
+ local_irq_save(flags);
+ for(i=0; i<NR_LOOPS; i++) {
+ time1 = get_cycles();
+ trace_tests_write_4bytes(5000);
+ time2 = get_cycles();
+ time = time2 - time1;
+ max_time = max(max_time, time);
+ min_time = min(min_time, time);
+ tot_time += time;
+ }
+ local_irq_restore(flags);
+
+ printk(KERN_ALERT "test results : time per probe\n");
+ printk(KERN_ALERT "number of loops : %d\n", NR_LOOPS);
+ printk(KERN_ALERT "total time : %llu\n", tot_time);
+ printk(KERN_ALERT "min : %llu\n", min_time);
+ printk(KERN_ALERT "max : %llu\n", max_time);
+
+ printk(KERN_ALERT "test end\n");
+
+ return -EAGAIN; /* Fail will directly unload the module */
}
static void ltt_test_exit(void)