Pass call start time into the call stack via grpc_call_element_args.

2 files changed, 2 insertions, 0 deletions

diff --git a/src/core/lib/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c
index 205496f2f2..2c5367901d 100644
--- a/src/core/lib/channel/channel_stack.c
+++ b/src/core/lib/channel/channel_stack.c
@@ -179,6 +179,7 @@ grpc_error *grpc_call_stack_init(
 
   /* init per-filter data */
   grpc_error *first_error = GRPC_ERROR_NONE;
+  args.start_time = gpr_now(GPR_CLOCK_MONOTONIC);
   for (i = 0; i < count; i++) {
     args.call_stack = call_stack;
     args.server_transport_data = transport_server_data;
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index 5b46cd32a3..27f3be7b29 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -75,6 +75,7 @@ typedef struct {
   const void *server_transport_data;
   grpc_call_context_element *context;
   grpc_mdstr *path;
+  gpr_timespec start_time;
   gpr_timespec deadline;
 } grpc_call_element_args;