[PATCH] sb1000.c: make const arrays static
From: Denys Vlasenko
Date: Sun Mar 30 2008 - 19:16:53 EST
On Monday 31 March 2008 01:02, Denys Vlasenko wrote:
> Size difference for 32bit x86:
>
> text data bss dec hex filename
> 6299 129 0 6428 191c linux-2.6-ALLYES/drivers/net/sb1000.o
> 5418 129 0 5547 15ab linux-2.6.inline-ALLYES/drivers/net/sb1000.o
>
> (I also see some other optimization opportunities,
> will test and send a patch separately).
Here it is. It replaces automatic constant arrays a-la
const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00};
with static ones. Size difference for 32bit x86:
text data bss dec hex filename
5418 129 0 5547 15ab linux-2.6.inline-ALLYES/drivers/net/sb1000.o
5396 129 0 5525 1595 linux-2.6.followup-ALLYES/drivers/net/sb1000.o
Signed-off-by: Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx>
--
vda
diff -urp linux-2.6.inline/drivers/net/sb1000.c linux-2.6.followup/drivers/net/sb1000.c
--- linux-2.6.inline/drivers/net/sb1000.c 2008-03-31 00:46:20.000000000 +0200
+++ linux-2.6.followup/drivers/net/sb1000.c 2008-03-31 01:04:57.000000000 +0200
@@ -437,7 +437,7 @@ sb1000_read_status(const int ioaddr[], u
static void
sb1000_issue_read_command(const int ioaddr[], const char* name)
{
- const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00};
+ static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00};
sb1000_wait_for_ready_clear(ioaddr, name);
outb(0xa0, ioaddr[0] + 6);
@@ -453,9 +453,10 @@ sb1000_issue_read_command(const int ioad
static int
sb1000_reset(const int ioaddr[], const char* name)
{
+ static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
int port, status;
- const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00};
port = ioaddr[1] + 6;
outb(0x4, port);
@@ -482,9 +483,10 @@ sb1000_reset(const int ioaddr[], const c
static int
sb1000_check_CRC(const int ioaddr[], const char* name)
{
+ static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
int crc, status;
- const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00};
/* check CRC */
if ((status = card_send_command(ioaddr, name, Command0, st)))
@@ -498,8 +500,9 @@ sb1000_check_CRC(const int ioaddr[], con
static inline int
sb1000_start_get_set_command(const int ioaddr[], const char* name)
{
+ static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
- const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00};
return card_send_command(ioaddr, name, Command0, st);
}
@@ -507,10 +510,11 @@ sb1000_start_get_set_command(const int i
static int
sb1000_end_get_set_command(const int ioaddr[], const char* name)
{
+ static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00};
+ static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
int status;
- const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00};
- const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00};
if ((status = card_send_command(ioaddr, name, Command0, st)))
return status;
@@ -520,10 +524,11 @@ sb1000_end_get_set_command(const int ioa
static int
sb1000_activate(const int ioaddr[], const char* name)
{
+ static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00};
+ static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
int status;
- const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00};
- const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00};
ssleep(1);
if ((status = card_send_command(ioaddr, name, Command0, st)))
@@ -544,9 +549,10 @@ static int
sb1000_get_firmware_version(const int ioaddr[], const char* name,
unsigned char version[], int do_end)
{
+ static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
int status;
- const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00};
if ((status = sb1000_start_get_set_command(ioaddr, name)))
return status;
@@ -566,9 +572,10 @@ sb1000_get_firmware_version(const int io
static int
sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency)
{
+ static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
int status;
- const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00};
udelay(1000);
if ((status = sb1000_start_get_set_command(ioaddr, name)))
@@ -613,12 +620,13 @@ sb1000_set_frequency(const int ioaddr[],
static int
sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[])
{
+ static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00};
+ static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00};
+ static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00};
+ static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
int status;
- const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00};
- const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00};
- const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00};
- const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00};
udelay(1000);
if ((status = sb1000_start_get_set_command(ioaddr, name)))
@@ -647,6 +655,8 @@ sb1000_get_PIDs(const int ioaddr[], cons
static int
sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[])
{
+ static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00};
+
unsigned char st[7];
short p;
int status;
@@ -654,7 +664,6 @@ sb1000_set_PIDs(const int ioaddr[], cons
unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00};
unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00};
unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00};
- const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00};
udelay(1000);
if ((status = sb1000_start_get_set_command(ioaddr, name)))
@@ -891,11 +900,12 @@ dropped_frame:
static void
sb1000_error_dpc(struct net_device *dev)
{
+ static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00};
+
char *name;
unsigned char st[5];
int ioaddr[2];
struct sb1000_private *lp = netdev_priv(dev);
- const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00};
const int ErrorDpcCounterInitialize = 200;
ioaddr[0] = dev->base_addr;
@@ -1077,14 +1087,15 @@ sb1000_start_xmit(struct sk_buff *skb, s
/* SB1000 interrupt handler. */
static irqreturn_t sb1000_interrupt(int irq, void *dev_id)
{
+ static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00};
+ static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00};
+
char *name;
unsigned char st;
int ioaddr[2];
struct net_device *dev = dev_id;
struct sb1000_private *lp = netdev_priv(dev);
- const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00};
- const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00};
const int MaxRxErrorCount = 6;
ioaddr[0] = dev->base_addr;