[PATCH 4/5] test: Fix antiquated reference to dtrace_ustackdepth_max

[eugene.loh@oracle.com]

From: Eugene Loh <eugene.loh@oracle.com>

Signed-off-by: Eugene Loh <eugene.loh@oracle.com>
---
 test/triggers/ustack-tst-bigstack.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/test/triggers/ustack-tst-bigstack.c b/test/triggers/ustack-tst-bigstack.c
index e694a518c..267b07e74 100644
--- a/test/triggers/ustack-tst-bigstack.c
+++ b/test/triggers/ustack-tst-bigstack.c
@@ -10,6 +10,10 @@
 #include <unistd.h>
 #include <sys/ioctl.h>
 
+/*
+ * Create a ridiculously large stack - enough to push us over
+ * the default setting of 'kernel.perf_event_max_stack' (127).
+ */
 int limit = 4096;
 
 int grow1(int);
@@ -23,14 +27,6 @@ shouldGrow(int frame)
 int
 grow(int frame)
 {
-	/*
-	 * Create a ridiculously large stack - enough to push us over
-	 * the default setting of 'dtrace_ustackdepth_max' (2048).
-	 *
-	 * This loop used to repeatedly call getpid(), but on Linux the result
-	 * of that call gets cached, so that repeated calls actually do not
-	 * trigger a system call anymore.  We use ioctl() instead.
-	 */
 	if (shouldGrow(frame))
 		frame = grow1(frame++);
 
-- 
2.47.3