[PATCH 2/2] send-pack: add new tracing regions for push

[Josh Steadmon <steadmon@google.com>]

From: Calvin Wan <calvinwan@google.com>

At $DAYJOB we experienced some slow pushes and needed additional trace
data to diagnose them.

Add trace2 regions for various sections of send_pack().

Signed-off-by: Josh Steadmon <steadmon@google.com>
---
 send-pack.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/send-pack.c b/send-pack.c
index fa2f5eec17..de8ba46ad5 100644
--- a/send-pack.c
+++ b/send-pack.c
@@ -512,8 +512,11 @@ int send_pack(struct send_pack_args *args,
 	}
 
 	git_config_get_bool("push.negotiate", &push_negotiate);
-	if (push_negotiate)
+	if (push_negotiate) {
+		trace2_region_enter("send_pack", "push_negotiate", the_repository);
 		get_commons_through_negotiation(args->url, remote_refs, &commons);
+		trace2_region_leave("send_pack", "push_negotiate", the_repository);
+	}
 
 	if (!git_config_get_bool("push.usebitmaps", &use_bitmaps))
 		args->disable_bitmaps = !use_bitmaps;
@@ -641,10 +644,12 @@ int send_pack(struct send_pack_args *args,
 	/*
 	 * Finally, tell the other end!
 	 */
-	if (!args->dry_run && push_cert_nonce)
+	if (!args->dry_run && push_cert_nonce) {
+		trace2_region_enter("send_pack", "push_cert", the_repository);
 		cmds_sent = generate_push_cert(&req_buf, remote_refs, args,
 					       cap_buf.buf, push_cert_nonce);
-	else if (!args->dry_run)
+		trace2_region_leave("send_pack", "push_cert", the_repository);
+	} else if (!args->dry_run) {
 		for (ref = remote_refs; ref; ref = ref->next) {
 			char *old_hex, *new_hex;
 
@@ -664,6 +669,7 @@ int send_pack(struct send_pack_args *args,
 						 old_hex, new_hex, ref->name);
 			}
 		}
+	}
 
 	if (use_push_options) {
 		struct string_list_item *item;
@@ -686,6 +692,7 @@ int send_pack(struct send_pack_args *args,
 	strbuf_release(&cap_buf);
 
 	if (use_sideband && cmds_sent) {
+		trace2_region_enter("send_pack", "sideband_demux", the_repository);
 		memset(&demux, 0, sizeof(demux));
 		demux.proc = sideband_demux;
 		demux.data = fd;
@@ -719,6 +726,8 @@ int send_pack(struct send_pack_args *args,
 			if (use_sideband) {
 				close(demux.out);
 				finish_async(&demux);
+				if (cmds_sent)
+					trace2_region_leave("send_pack", "sideband_demux", the_repository);
 			}
 			fd[1] = -1;
 			return -1;
@@ -743,6 +752,7 @@ int send_pack(struct send_pack_args *args,
 			error("error in sideband demultiplexer");
 			ret = -1;
 		}
+		trace2_region_leave("send_pack", "sideband_demux", the_repository);
 	}
 
 	if (ret < 0)
-- 
2.46.0.184.g6999bdac58-goog