Re: [TRIVIAL PATCH] block: Correct misuses of 0x%<decimal>
From: Joe Perches
Date: Mon Aug 03 2015 - 22:28:03 EST
On Tue, 2015-08-04 at 10:19 +0800, yalin wang wrote:
> Ping ?
> > On Aug 3, 2015, at 16:56, yalin wang <yalin.wang2010@xxxxxxxxx> wrote:
> >
> >
> >> On Aug 3, 2015, at 16:03, Joe Perches <joe@xxxxxxxxxxx> wrote:
> >>
> >> On Mon, 2015-08-03 at 15:25 +0800, yalin wang wrote:
> >>>> On Aug 3, 2015, at 04:25, Joe Perches <joe@xxxxxxxxxxx> wrote:
> >>>>
> >>>> Correct misuse of 0x%d in logging messages.
> >>>>
> >> []
> >>> why not use like this : dev_dbg(&h->pdev->dev, " Max outstanding
> >>> commands = %#x\nâ ?
> >>> %#x will add 0x prefix automatically .
> >>
> >> It's generally a consistency thing.
> >> A 0 value would be emitted as 0 and not 0x0.
> >>
> > i try on my ubuntu ,
> >
> > static int __init throtl_init(void)
> > {
> > printk("module init test: %#x %p\n", 0, (void *)0x123);
> > return 0;
> >
> > }
> >
> > module_init(throtl_init);
> >
> > #uname -a
> > Linux ubuntu 3.16.0-38-generic #52~14.04.1-Ubuntu SMP Fri May 8 09:43:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
> >
> > #dmesg
> > [259356.375586] module init test: 0x0 0000000000000123
> >
> > it seems donât need 0x%x for 0, just need %#x for all numbers.
> > there are lots of use like this, i can change them if needed:
> >
> > # egrep -r -i '0x%\d*x' . | wc -l
> > 11776
I suggest not, it's not a standard usage and the 0
may be unexpected.
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