fixes for worker process profiling

Signed-off-by: Ava Hahn <a.hahn@f5.com>

kaproxy/run.sh

@@ -3,10 +3,10 @@
 function p_invoke() {
 	valgrind --tool=callgrind                         \
 		--trace-children=yes                          \
-		--callgrind-out-file=/tmp/callgrind.output    \
+		--callgrind-out-file=/tmp/callgrind.out.%p    \
 		--cache-sim=yes                               \
+		--instr-atstart=no                            \
 		/nginx/objs/nginx                             \
-			-p /tmp                                   \
 			-e /tmp/error.log                         \
 			-c /nginx.conf                            \
 			-g "daemon off;"
@@ -14,7 +14,6 @@ function p_invoke() {
 
 function invoke() {
 	/nginx/objs/nginx     \
-		-p /tmp           \
 		-e /tmp/error.log \
 		-c /nginx.conf    \
 		-g "daemon off;"  \
@@ -35,7 +34,14 @@ function sigcont_handler() {
 trap 'sigint_handler' INT
 trap 'sigcont_handler' CONT
 
+# enable tracing
+echo 1 > /proc/sys/kernel/yama/ptrace_scope
+
 p_invoke &
+
 wait
-echo "NGINX down. waiting until signalled..."
+echo "NGINX down. waiting to find it again"
+sleep 0.5
+wait $(cat /tmp/pid)
+echo "NGINX is GONE. waiting until signalled"
 sleep infinity