void hvlogOutput(const char *buf, int count)
{
unsigned long flags;
int begin;
int index;
static const char cr = '\r';
begin = 0;
spin_lock_irqsave(&consoleloglock, flags);
for (index = 0; index < count; index++) {
if (buf[index] == '\n') {
/*
* Start right after the last '\n' or at the zeroth
* array position and output the number of characters
* including the newline.
*/
HvCall_writeLogBuffer(&buf[begin], index - begin + 1);
begin = index + 1;
HvCall_writeLogBuffer(&cr, 1);
}
}
if ((index - begin) > 0)
HvCall_writeLogBuffer(&buf[begin], index - begin);
spin_unlock_irqrestore(&consoleloglock, flags);
}
static void hvputc(char c)
{
if (c == '\n')
hvputc('\r');
HvCall_writeLogBuffer(&c, 1);
}
/*
* Handle a config charLpEvent. Could be either interrupt or ack
*/
static void vioHandleConfig(struct HvLpEvent *event)
{
struct viocharlpevent *cevent = (struct viocharlpevent *)event;
HvCall_writeLogBuffer(cevent->data, cevent->len);
if (cevent->data[0] == 0x01)
printk(VIOCONS_KERN_INFO "window resized to %d: %d: %d: %d\n",
cevent->data[1], cevent->data[2],
cevent->data[3], cevent->data[4]);
else
printk(VIOCONS_KERN_WARN "unknown config event\n");
}
void hvlog(char *fmt, ...)
{
int i;
unsigned long flags;
va_list args;
static char buf[256];
spin_lock_irqsave(&consoleloglock, flags);
va_start(args, fmt);
i = vscnprintf(buf, sizeof(buf) - 1, fmt, args);
va_end(args);
buf[i++] = '\r';
HvCall_writeLogBuffer(buf, i);
spin_unlock_irqrestore(&consoleloglock, flags);
}