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From: Colin King <colin.king@canonical.com>
To: Mauro Carvalho Chehab <mchehab@kernel.org>,
	Sean Young <sean@mess.org>, Hans Verkuil <hans.verkuil@cisco.com>,
	linux-media@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] [media] imon: make two const arrays static, reduces object code size
Date: Tue,  5 Sep 2017 13:07:50 +0100	[thread overview]
Message-ID: <20170905120750.16627-1-colin.king@canonical.com> (raw)

From: Colin Ian King <colin.king@canonical.com>

Don't populate the const arrays vfd_packet6 and fp_packet on the
stack, instead make them static.  Makes the object code smaller
by over 600 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  43794	  17920	   1024	  62738	   f512	drivers/media/rc/imon.o

After:
   text	   data	    bss	    dec	    hex	filename
  42994	  18080	   1024	  62098	   f292	drivers/media/rc/imon.o

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/media/rc/imon.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index 7b3f31cc63d2..c50875a8c5b6 100644
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -943,7 +943,7 @@ static ssize_t vfd_write(struct file *file, const char __user *buf,
 	int seq;
 	int retval = 0;
 	struct imon_context *ictx;
-	const unsigned char vfd_packet6[] = {
+	static const unsigned char vfd_packet6[] = {
 		0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
 
 	ictx = file->private_data;
@@ -2047,8 +2047,8 @@ static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
 {
 	struct rc_dev *rdev;
 	int ret;
-	const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
-					    0x00, 0x00, 0x00, 0x88 };
+	static const unsigned char fp_packet[] = {
+		0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88 };
 
 	rdev = rc_allocate_device(ictx->dev_descr->flags & IMON_IR_RAW ?
 				  RC_DRIVER_IR_RAW : RC_DRIVER_SCANCODE);
-- 
2.14.1

WARNING: multiple messages have this Message-ID (diff)
From: Colin King <colin.king@canonical.com>
To: Mauro Carvalho Chehab <mchehab@kernel.org>,
	Sean Young <sean@mess.org>, Hans Verkuil <hans.verkuil@cisco.com>,
	linux-media@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] [media] imon: make two const arrays static, reduces object code size
Date: Tue, 05 Sep 2017 12:07:50 +0000	[thread overview]
Message-ID: <20170905120750.16627-1-colin.king@canonical.com> (raw)

From: Colin Ian King <colin.king@canonical.com>

Don't populate the const arrays vfd_packet6 and fp_packet on the
stack, instead make them static.  Makes the object code smaller
by over 600 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  43794	  17920	   1024	  62738	   f512	drivers/media/rc/imon.o

After:
   text	   data	    bss	    dec	    hex	filename
  42994	  18080	   1024	  62098	   f292	drivers/media/rc/imon.o

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/media/rc/imon.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index 7b3f31cc63d2..c50875a8c5b6 100644
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -943,7 +943,7 @@ static ssize_t vfd_write(struct file *file, const char __user *buf,
 	int seq;
 	int retval = 0;
 	struct imon_context *ictx;
-	const unsigned char vfd_packet6[] = {
+	static const unsigned char vfd_packet6[] = {
 		0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
 
 	ictx = file->private_data;
@@ -2047,8 +2047,8 @@ static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
 {
 	struct rc_dev *rdev;
 	int ret;
-	const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
-					    0x00, 0x00, 0x00, 0x88 };
+	static const unsigned char fp_packet[] = {
+		0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88 };
 
 	rdev = rc_allocate_device(ictx->dev_descr->flags & IMON_IR_RAW ?
 				  RC_DRIVER_IR_RAW : RC_DRIVER_SCANCODE);
-- 
2.14.1


             reply	other threads:[~2017-09-05 12:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-05 12:07 Colin King [this message]
2017-09-05 12:07 ` [PATCH] [media] imon: make two const arrays static, reduces object code size Colin King

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