Messages in this thread | | | Date | Mon, 22 Jun 2015 10:12:40 -0700 | Subject | Re: [PATCH v5 2/6] arch: unify ioremap prototypes and macro aliases | From | Dan Williams <> |
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On Mon, Jun 22, 2015 at 9:10 AM, Christoph Hellwig <hch@lst.de> wrote: > On Mon, Jun 22, 2015 at 04:24:27AM -0400, Dan Williams wrote: >> Some archs define the first parameter to ioremap() as unsigned long, >> while the balance define it as resource_size_t. Unify on >> resource_size_t to enable passing ioremap function pointers. Also, some >> archs use function-like macros for defining ioremap aliases, but >> asm-generic/io.h expects object-like macros, unify on the latter. >> >> Move all handling of ioremap aliasing (i.e. ioremap_wt => ioremap) to >> include/linux/io.h. Add a check to include/linux/io.h to warn at >> compile time if an arch violates expectations. >> >> Kill ARCH_HAS_IOREMAP_WC and ARCH_HAS_IOREMAP_WT in favor of just >> testing for ioremap_wc, and ioremap_wt being defined. This arrangement >> allows drivers to know when ioremap_<foo> are being re-directed to plain >> ioremap. >> >> Reported-by: kbuild test robot <fengguang.wu@intel.com> >> Signed-off-by: Dan Williams <dan.j.williams@intel.com> > > Hmm, this is quite a bit of churn, and doesn't make the interface lot > more obvious. > > I guess it's enough to get the pmem related bits going
Is that an acked-by for this cycle with a request to go deeper for 4.3?
> but I'd really > prefer defining the ioremap* prototype in linux/io.h and requiring > and out of line implementation in the architectures, it's not like > it's a fast path. And to avoid the ifdef mess make it something like: > > void __iomem *ioremap_flags(resource_size_t offset, unsigned long size, > unsigned long prot_val, unsigned flags);
Yes, I do like this even better. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
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