Add initializers for all tracers

src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c

@@ -138,7 +138,7 @@
 #define GRPC_GRPCLB_RECONNECT_MAX_BACKOFF_SECONDS 120
 #define GRPC_GRPCLB_RECONNECT_JITTER 0.2
 
-grpc_tracer_flag grpc_lb_glb_trace;
+grpc_tracer_flag grpc_lb_glb_trace = GRPC_TRACER_INITIALIZER(false);
 
 /* add lb_token of selected subchannel (address) to the call's initial
  * metadata */

src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.c

@@ -74,7 +74,7 @@
 
 typedef struct round_robin_lb_policy round_robin_lb_policy;
 
-grpc_tracer_flag grpc_lb_round_robin_trace;
+grpc_tracer_flag grpc_lb_round_robin_trace = GRPC_TRACER_INITIALIZER(false);
 
 /** List of entities waiting for a pick.
  *

src/core/ext/transport/chttp2/transport/chttp2_transport.c

@@ -89,8 +89,8 @@ static bool g_default_keepalive_permit_without_calls =
     DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS;
 
 #define MAX_CLIENT_STREAM_ID 0x7fffffffu
-grpc_tracer_flag grpc_http_trace;
-grpc_tracer_flag grpc_flowctl_trace;
+grpc_tracer_flag grpc_http_trace = GRPC_TRACER_INITIALIZER(false);
+grpc_tracer_flag grpc_flowctl_trace = GRPC_TRACER_INITIALIZER(false);
 
 static const grpc_transport_vtable vtable;
 
@@ -2787,7 +2787,8 @@ static void benign_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *arg,
                 grpc_error_set_int(
                     GRPC_ERROR_CREATE_FROM_STATIC_STRING("Buffers full"),
                     GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_ENHANCE_YOUR_CALM));
-  } else if (error == GRPC_ERROR_NONE && GRPC_TRACER_ON(grpc_resource_quota_trace)) {
+  } else if (error == GRPC_ERROR_NONE &&
+             GRPC_TRACER_ON(grpc_resource_quota_trace)) {
     gpr_log(GPR_DEBUG,
             "HTTP2: %s - skip benign reclamation, there are still %" PRIdPTR
             " streams",

src/core/lib/channel/channel_stack.c

@@ -38,7 +38,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-grpc_tracer_flag grpc_trace_channel;
+grpc_tracer_flag grpc_trace_channel = GRPC_TRACER_INITIALIZER(false);
 
 /* Memory layouts.
 

src/core/lib/channel/channel_stack_builder.c

@@ -38,7 +38,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 
-grpc_tracer_flag grpc_trace_channel_stack_builder;
+grpc_tracer_flag grpc_trace_channel_stack_builder =
+    GRPC_TRACER_INITIALIZER(false);
 
 typedef struct filter_node {
   struct filter_node *next;

src/core/lib/http/parser.c

@@ -40,7 +40,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-grpc_tracer_flag grpc_http1_trace;
+grpc_tracer_flag grpc_http1_trace = GRPC_TRACER_INITIALIZER(false);
 
 static char *buf2str(void *buffer, size_t length) {
   char *out = gpr_malloc(length + 1);

src/core/lib/iomgr/combiner.c

@@ -42,7 +42,7 @@
 #include "src/core/lib/iomgr/workqueue.h"
 #include "src/core/lib/profiling/timers.h"
 
-grpc_tracer_flag grpc_combiner_trace;
+grpc_tracer_flag grpc_combiner_trace = GRPC_TRACER_INITIALIZER(false);
 
 #define GRPC_COMBINER_TRACE(fn)                \
   do {                                         \

src/core/lib/iomgr/resource_quota.c

@@ -44,7 +44,7 @@
 
 #include "src/core/lib/iomgr/combiner.h"
 
-grpc_tracer_flag grpc_resource_quota_trace;
+grpc_tracer_flag grpc_resource_quota_trace = GRPC_TRACER_INITIALIZER(false);
 
 #define MEMORY_USAGE_ESTIMATION_MAX 65536
 
@@ -313,7 +313,8 @@ static bool rq_alloc(grpc_exec_ctx *exec_ctx,
                 resource_quota->name, resource_user->name, amt,
                 resource_quota->free_pool);
       }
-    } else if (GRPC_TRACER_ON(grpc_resource_quota_trace) && resource_user->free_pool >= 0) {
+    } else if (GRPC_TRACER_ON(grpc_resource_quota_trace) &&
+               resource_user->free_pool >= 0) {
       gpr_log(GPR_DEBUG, "RQ %s %s: discard already satisfied alloc request",
               resource_quota->name, resource_user->name);
     }

src/core/lib/iomgr/tcp_posix.c

@@ -74,7 +74,7 @@ typedef GRPC_MSG_IOVLEN_TYPE msg_iovlen_type;
 typedef size_t msg_iovlen_type;
 #endif
 
-grpc_tracer_flag grpc_tcp_trace;
+grpc_tracer_flag grpc_tcp_trace = GRPC_TRACER_INITIALIZER(false);
 
 typedef struct {
   grpc_endpoint base;

src/core/lib/iomgr/timer_generic.c

@@ -56,8 +56,8 @@
 #define MIN_QUEUE_WINDOW_DURATION 0.01
 #define MAX_QUEUE_WINDOW_DURATION 1
 
-grpc_tracer_flag grpc_timer_trace;
-grpc_tracer_flag grpc_timer_check_trace;
+grpc_tracer_flag grpc_timer_trace = GRPC_TRACER_INITIALIZER(false);
+grpc_tracer_flag grpc_timer_check_trace = GRPC_TRACER_INITIALIZER(false);
 
 typedef struct {
   gpr_mu mu;

src/core/lib/security/transport/secure_endpoint.c

@@ -75,7 +75,7 @@ typedef struct {
   gpr_refcount ref;
 } secure_endpoint;
 
-grpc_tracer_flag grpc_trace_secure_endpoint;
+grpc_tracer_flag grpc_trace_secure_endpoint = GRPC_TRACER_INITIALIZER(false);
 
 static void destroy(grpc_exec_ctx *exec_ctx, secure_endpoint *secure_ep) {
   secure_endpoint *ep = secure_ep;

src/core/lib/surface/call.c

@@ -244,8 +244,8 @@ struct grpc_call {
   void *saved_receiving_stream_ready_bctlp;
 };
 
-grpc_tracer_flag grpc_call_error_trace;
-grpc_tracer_flag grpc_compression_trace;
+grpc_tracer_flag grpc_call_error_trace = GRPC_TRACER_INITIALIZER(false);
+grpc_tracer_flag grpc_compression_trace = GRPC_TRACER_INITIALIZER(false);
 
 #define CALL_STACK_FROM_CALL(call) ((grpc_call_stack *)((call) + 1))
 #define CALL_FROM_CALL_STACK(call_stack) (((grpc_call *)(call_stack)) - 1)

src/core/lib/surface/completion_queue.c

@@ -50,9 +50,9 @@
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/surface/event_string.h"
 
-grpc_tracer_flag grpc_trace_operation_failures;
+grpc_tracer_flag grpc_trace_operation_failures = GRPC_TRACER_INITIALIZER(false);
 #ifndef NDEBUG
-grpc_tracer_flag grpc_trace_pending_tags;
+grpc_tracer_flag grpc_trace_pending_tags = GRPC_TRACER_INITIALIZER(false);
 #endif
 
 typedef struct {

src/core/lib/surface/server.c

@@ -73,7 +73,7 @@ typedef struct registered_method registered_method;
 
 typedef enum { BATCH_CALL, REGISTERED_CALL } requested_call_type;
 
-grpc_tracer_flag grpc_server_channel_trace;
+grpc_tracer_flag grpc_server_channel_trace = GRPC_TRACER_INITIALIZER(false);
 
 typedef struct requested_call {
   requested_call_type type;

src/core/lib/transport/bdp_estimator.c

@@ -38,7 +38,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-grpc_tracer_flag grpc_bdp_estimator_trace;
+grpc_tracer_flag grpc_bdp_estimator_trace = GRPC_TRACER_INITIALIZER(false);
 
 void grpc_bdp_estimator_init(grpc_bdp_estimator *estimator, const char *name) {
   estimator->estimate = 65536;

src/core/lib/transport/connectivity_state.c

@@ -39,7 +39,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-grpc_tracer_flag grpc_connectivity_state_trace;
+grpc_tracer_flag grpc_connectivity_state_trace = GRPC_TRACER_INITIALIZER(false);
 
 const char *grpc_connectivity_state_name(grpc_connectivity_state state) {
   switch (state) {

src/core/tsi/transport_security.c

@@ -41,7 +41,7 @@
 
 /* --- Tracing. --- */
 
-grpc_tracer_flag tsi_tracing_enabled;
+grpc_tracer_flag tsi_tracing_enabled = GRPC_TRACER_INITIALIZER(false);
 
 /* --- tsi_result common implementation. --- */