Hi all,
In the following code snippet
if(pcnet32_debug > 5) is already commented in my original kernel source, If
I remove the comment or if I comment next line of the same (printk(...)),
the dumping of the data into debug console is very slow(I am using simple
shell, I typed ls in it, the display is very slow).
If I keep the code just like this I am getting so many debug statements of
printk.
Please clarify me why it is becoming slow, if remove the comment of
if(pcnet32_debug > 5) or commenting the next line of it (printk)...
----------------------------------------------------------------------------
-------------------
static void pcnet32_interrupt(int irq, void *dev_id, struct pt_regs * regs)
{
int temp;
struct net_device *dev = (struct net_device *)dev_id;
struct pcnet32_private *lp;
unsigned long ioaddr;
u16 csr0,rap;
int boguscnt = max_interrupt_work;
int must_restart;
if (dev == NULL) {
printk (KERN_DEBUG "pcnet32_interrupt(): irq %d for unknown
device.\n",
irq);
return;
}
ioaddr = dev->base_addr;
lp = (struct pcnet32_private *)dev->priv;
spin_lock(&lp->lock);
rap = lp->a.read_rap(ioaddr);
while ((csr0 = lp->a.read_csr (ioaddr, 0)) & 0x8600 && --boguscnt >= 0)
{
/* Acknowledge all of the current interrupt sources ASAP. */
lp->a.write_csr (ioaddr, 0, csr0 & ~0x004f);
must_restart = 0;
******************************************************************
// if(pcnet32_debug > 5)
printk(KERN_DEBUG"%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n"
,dev->name, csr0, lp->a.read_csr (ioaddr, 0));
********************************************************************
if (csr0 & 0x0400) /* Rx interrupt */
pcnet32_rx(dev);
if (csr0 & 0x0200) { /* Tx-done interrupt */
unsigned int dirty_tx = lp->dirty_tx;
----------------------------------------------------------------------------
---------------------
Thanks and Regards
Ramprasad
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