On Thu, 2013-04-18 at 10:57 -0400, Alan Stern wrote:
> On Wed, 17 Apr 2013, Joe Perches wrote:
>
> > On Wed, 2013-04-17 at 14:47 -0400, Alan Stern wrote:
> > > On Wed, 17 Apr 2013, Joe Perches wrote:
> > []
> > > > +int usb_stor_dbg(const struct us_data *us, const char *fmt, ...)
> > > > +{
> > > > + struct va_format vaf;
> > > > + va_list args;
> > > > + int r;
> > > > +
> > > > + va_start(args, fmt);
> > > > +
> > > > + if (us && us->pusb_dev) {
> > > > + r = dev_vprintk_emit(7, &us->pusb_dev->dev, fmt, args);
> > >
> > > Isn't there a symbolic constant you can use instead of "7"?
> >
> > Nope.
> > lib/dynamic_debug:__dynamic_dev_dbg() does the same thing.
>
> This clearly is an omission in the logging API.
>
> Kay, why doesn't the kernel have symbolic constants for the various
> logging facilities and levels?
Because they're so _very_ rarely used in decimal form.
printk.c, drivers/base/core.c, and net/core/dev.c
sensibly use - '0', and I think dynamic_debug is the
only other current user.
I suppose a new inline could be created something like
static inline int printk_get_level_decimal(const char *level)
{
if (printk_get_level(level)) {
switch (level[1]) {
case '0' ... '7':
return level[1] - '0';
}
}
return -1;
}
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