From: Eric Wong <normalperson@yhbt.net>
Date: Sat, 20 Apr 2013 22:59:32 +0000 (+0000)
Subject: linux_inet_diag: better align listener_stats struct
X-Git-Tag: v0.11.0~1
X-Git-Url: https://repo.or.cz/w/raindrops.git/commitdiff_plain/241cfdd395c7d045f0048a1a0410ae28e6555c3b

linux_inet_diag: better align listener_stats struct

Using an extra 4 bytes for the listener_stats should not
significantly increase space usage, and it has the side benefit
of making our code slightly smaller.

$ ~/linux/scripts/bloat-o-meter before.so after.so
add/remove: 0/0 grow/shrink: 1/2 up/down: 14/-32 (-18)
function                                     old     new   delta
tcp_stats                                    392     406     +14
st_to_hash                                   195     187      -8
diag                                         763     739     -24
---

diff --git a/ext/raindrops/linux_inet_diag.c b/ext/raindrops/linux_inet_diag.c
index d94dafd..dcf7bc2 100644
--- a/ext/raindrops/linux_inet_diag.c
+++ b/ext/raindrops/linux_inet_diag.c
@@ -70,8 +70,8 @@ static ID id_new;
 
 struct listen_stats {
 	uint32_t active;
-	uint32_t listener_p:1;
-	uint32_t queued:31;
+	uint32_t queued;
+	uint32_t listener_p;
 };
 
 #define OPLEN (sizeof(struct inet_diag_bc_op) + \