X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=markers-test%2Ftest-mark-speed.c;h=25f45a1a8df08a35586fbbc8614cf87e2bec2a28;hb=d511c84bb8211b4e20ff6bcaea17b00a4e275a5f;hp=2c585b607acf954ccc911ff7c7e1cb8885a280be;hpb=f39e77c6a6fc7965fdc5766980cf8e5157f41e63;p=lttv.git

diff --git a/markers-test/test-mark-speed.c b/markers-test/test-mark-speed.c
index 2c585b60..25f45a1a 100644
--- a/markers-test/test-mark-speed.c
+++ b/markers-test/test-mark-speed.c
@@ -52,15 +52,19 @@ static void noinline test2(const struct marker *mdata,
 	//asm volatile ("");
 struct proc_dir_entry *pentry = NULL;
 
-int temp __cacheline_aligned = 10;
-int temp2 __cacheline_aligned = 10;
+char temp0[8192];
+int temp[8192] __cacheline_aligned;
+char temp5[8192];
 
 static inline void test(unsigned long arg, unsigned long arg2)
 {
 #ifdef CACHEFLUSH
 	wbinvd();
 #endif
-	temp = (temp + 60) << 10;
+	temp[2] = (temp[0] + 60) << 10;
+	temp[3] = (temp[2] + 60) << 10;
+	temp[4] = (temp[3] + 60) << 10;
+	temp[0] = (temp[4] + 60) << 10;
 	//asm volatile ("");
 	barrier();
 	__my_trace_mark(1, kernel_debug_test, NULL, "%d %d %ld %ld", 2, current->pid, arg, arg2);
@@ -75,6 +79,10 @@ static int my_open(struct inode *inode, struct file *file)
 	unsigned long flags;
 
 	local_irq_save(flags);
+#ifdef CACHEFLUSH
+	wbinvd();	/* initial write back, without cycle count */
+	msleep(20);	/* wait for L2 flush */
+#endif
 	rdtsc_barrier();
 	cycles1 = get_cycles();
 	rdtsc_barrier();