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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Daniel Scally <djrscally@gmail.com>,
	linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
	linux-acpi@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Yong Zhi <yong.zhi@intel.com>,
	Sakari Ailus <sakari.ailus@linux.intel.com>,
	Bingbu Cao <bingbu.cao@intel.com>,
	Tianshu Qiu <tian.shu.qiu@intel.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Subject: [PATCH v2 4/6] software node: Imply kobj_to_swnode() to be no-op
Date: Mon, 29 Mar 2021 18:12:05 +0300
Message-ID: <20210329151207.36619-4-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20210329151207.36619-1-andriy.shevchenko@linux.intel.com>

Since we don't use structure field layout randomization
the manual shuffling can affect some macros, in particular
kobj_to_swnode(), which becomes a no-op when kobj member
is the first one in the struct swnode.

Bloat-o-meter statistics for swnode.o:

  add/remove: 0/0 grow/shrink: 2/10 up/down: 9/-100 (-91)
  Total: Before=7217, After=7126, chg -1.26%

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: added the object file name against which bloat-o-meter was run (Greg)
 drivers/base/swnode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
index db982859171e..e83028e11f50 100644
--- a/drivers/base/swnode.c
+++ b/drivers/base/swnode.c
@@ -12,10 +12,10 @@
 #include <linux/slab.h>
 
 struct swnode {
-	int id;
 	struct kobject kobj;
 	struct fwnode_handle fwnode;
 	const struct software_node *node;
+	int id;
 
 	/* hierarchy */
 	struct ida child_ids;
-- 
2.30.2


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-29 15:12 [PATCH v2 1/6] software node: Free resources explicitly when swnode_register() fails Andy Shevchenko
2021-03-29 15:12 ` [PATCH v2 2/6] software node: Introduce software_node_alloc()/software_node_free() Andy Shevchenko
2021-03-29 15:12 ` [PATCH v2 3/6] software node: Deduplicate code in fwnode_create_software_node() Andy Shevchenko
2021-03-29 21:06   ` Daniel Scally
2021-03-29 15:12 ` Andy Shevchenko [this message]
2021-03-29 15:12 ` [PATCH v2 5/6] software node: Introduce SOFTWARE_NODE_REFERENCE() helper macro Andy Shevchenko
2021-03-29 22:45   ` Daniel Scally
2021-03-30  9:26     ` Andy Shevchenko
2021-03-31 11:25       ` Daniel Scally
2021-03-29 15:12 ` [PATCH v2 6/6] media: ipu3-cio2: Switch to use SOFTWARE_NODE_REFERENCE() Andy Shevchenko
2021-03-29 22:45 ` [PATCH v2 1/6] software node: Free resources explicitly when swnode_register() fails Daniel Scally
2021-03-31 11:06 ` Heikki Krogerus
2021-04-08 14:15   ` Rafael J. Wysocki
2021-04-08 14:50     ` Andy Shevchenko
2021-04-08 15:04       ` Rafael J. Wysocki
2021-04-08 15:18         ` Andy Shevchenko
2021-04-08 15:19           ` Rafael J. Wysocki

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