From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Date: Tue, 22 Jul 2008 10:53:18 +0000 Subject: Re: [PATCH] Make u64 long long on all architectures (was: the Message-Id: <20080722035318.76cad6dd.akpm@linux-foundation.org> List-Id: References: <20080625131101.GA6205@digi.com> <20080704104634.GA31634@digi.com> <20080704111540.ddffd241.akpm@linux-foundation.org> <20080704132716.f1e12554.akpm@linux-foundation.org> <20080704204252.GM14894@parisc-linux.org> <20080704150100.1f7b8a65.akpm@linux-foundation.org> <20080705020350.GN14894@parisc-linux.org> <20080722030506.206a2cc2.akpm@linux-foundation.org> <1216722995.8357.4.camel@localhost> In-Reply-To: <1216722995.8357.4.camel@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: michael@ellerman.id.au Cc: Matthew Wilcox , linux-arch@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, Peter Anvin , Linus Torvalds , "David S. Miller" On Tue, 22 Jul 2008 20:36:35 +1000 Michael Ellerman wrote: > On Tue, 2008-07-22 at 03:05 -0700, Andrew Morton wrote: > > On Fri, 4 Jul 2008 20:03:51 -0600 Matthew Wilcox wrote: > > > > > [PATCH] Make u64 long long on all architectures > > > > > > It is currently awkward to print a u64 type. Some architectures use > > > unsigned long while others use unsigned long long. Since unsigned long > > > long is 64-bit for all existing Linux architectures, change those that > > > use long to use long long. Note that this applies only within the > > > kernel. If u64 is being used in a C++ method definition, the symbol > > > mangling would change. > > > > > > Signed-off-by: Matthew Wilcox > > > > > > diff --git a/include/asm-generic/int-l64.h b/include/asm-generic/int-l64.h > > > index 2af9b75..32f07bd 100644 > > > --- a/include/asm-generic/int-l64.h > > > +++ b/include/asm-generic/int-l64.h > > > @@ -23,8 +23,13 @@ typedef unsigned short __u16; > > > typedef __signed__ int __s32; > > > typedef unsigned int __u32; > > > > > > +#ifdef __KERNEL__ > > > +typedef __signed__ long long __s64; > > > +typedef unsigned long long __u64; > > > +#else > > > typedef __signed__ long __s64; > > > typedef unsigned long __u64; > > > +#endif > > > > > > #endif /* __ASSEMBLY__ */ > > > > This is (IMO) a desirable change and will prevent a heck of a lot of > > goofing around, and will permit a lot of prior goofing around to > > be removed. > > > > But I bet there are lots of instalces of printk("%l", some_u64) down in > > arch code where the type of u64 _is_ known which will now spew warnings. > > > > Oh well. > > As a rough estimate: > > concordia powerpc(master) $ find arch/powerpc/ ! -name '*32.*' | xargs grep "%l" | grep -v "%ll" | wc -l > 635 lolz. If yesterdays-linux-next on todays-mainline wasn't such a hilarious trainwreck I'd test your grepping. I guess that could be done on mainline too. > Someone's gonna get a lot of git points for fixing all those. Might keep > the speeling fix crowd busy for a while. I'm not sure I have the energy for this. But we really should do it.