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Date: Thu, 30 May 2013 22:20:59 -0700 From: Joe Perches <joe@...ches.com> To: Davidlohr Bueso <davidlohr.bueso@...com> Cc: Bjørn Mork <bjorn@...k.no>, Sergei Shtylyov <sergei.shtylyov@...entembedded.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] net: skbuff: use _RET_IP_ On Thu, 2013-05-30 at 18:11 -0700, Davidlohr Bueso wrote: > On Thu, 2013-05-30 at 13:08 +0200, Bjørn Mork wrote: > > Sergei Shtylyov <sergei.shtylyov@...entembedded.com> writes: > > > > > Why not "text:%#lx" as already used in this string? It's > > > equivalent to "0x%lx". > > > > Well, I don't know the reasoning in this case, but I'd like to note that > > those are not strictly equivalent. Personally I find the formatting of 0 > > annoying enough to avoid %#x for any value which may be 0. It's > > especially bad if you try to line up things by adding leading zeros. > > Yep, I found that 0x%lx produced the same output as %p. Don't use a standalone gcc compiled program to determine what the kernel outputs. lib/vsprintf.c does not output the same. (32 bit) The kernel output is; printk("0x%lx\n", 0x100ul) 0x100 printk("%p\n", (void *)0x100ul) 00000100 printk("%#p\n", (void *)0x100ul) 0x00000100 The last one isn't used at all in kernel source. (gcc complains) It's always "0x%p" -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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