linux-kernel - [PATCH net-next v3 5/8] ynl: include uapi header after all dependencies

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Message-ID: <20241202162936.3778016-6-sdf@fomichev.me>
Date: Mon,  2 Dec 2024 08:29:33 -0800
From: Stanislav Fomichev <sdf@...ichev.me>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	horms@...nel.org,
	donald.hunter@...il.com,
	corbet@....net,
	andrew+netdev@...n.ch,
	kory.maincent@...tlin.com,
	sdf@...ichev.me,
	nicolas.dichtel@...nd.com
Subject: [PATCH net-next v3 5/8] ynl: include uapi header after all dependencies

Essentially reverse the order of headers for userspace generated files.

Before (make -C tools/net/ynl/; cat tools/net/ynl/ethtool-user.h):
  #include <linux/ethtool_netlink_generated.h>
  #include <linux/ethtool.h>
  #include <linux/ethtool.h>
  #include <linux/ethtool.h>

After:
  #include <linux/ethtool.h>
  #include <linux/ethtool_netlink_generated.h>

While at it, make sure we track which headers we've already included
and include the headers only once.

Signed-off-by: Stanislav Fomichev <sdf@...ichev.me>
---
 tools/net/ynl/ynl-gen-c.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 2bf4d992e54a..8098bcbb6f40 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py
@@ -2782,12 +2782,17 @@ _C_KW = {
         else:
             cw.p(f'#include "{hdr_file}"')
             cw.p('#include "ynl.h"')
-        headers = [parsed.uapi_header]
+        headers = []
     for definition in parsed['definitions']:
         if 'header' in definition:
             headers.append(definition['header'])
+    if args.mode == 'user':
+        headers.append(parsed.uapi_header)
+    seen_header = []
     for one in headers:
-        cw.p(f"#include <{one}>")
+        if one not in seen_header:
+            cw.p(f"#include <{one}>")
+            seen_header.append(one)
     cw.nl()
 
     if args.mode == "user":
-- 
2.47.0