On Tue, Feb 07, 2017 at 01:10:16PM -0800, Laura Abbott wrote: > The set_memory_* APIs came out of a desire to have a better way to > change memory attributes. Many of these attributes were linked to cache > functionality so the prototypes were put in cacheflush.h. These days, > the APIs have grown and have a much wider use than just cache APIs. To > support this growth, split off set_memory_* and friends into a separate > header file to avoid growing cacheflush.h for APIs that have nothing to > do with caches. > > Signed-off-by: Laura Abbott <labbott@xxxxxxxxxx> > --- > This came out of a comment Russell made while reviewing RODATA test cases > http://lists.infradead.org/pipermail/linux-arm-kernel/2017-January/480855.html > While the final result of that series was the rodata code was refactored into > its own header file, the set_memory_* APIs are still out of place. > > This is a simple attempt at moving all the API stubs to their own file. > Another idea I had was throwing set_memory_{x,nx,ro,rw} in an asm-generic > file since those are commonly used for module setting across all arches. > > This is an RFC to see if this is actually beneficial. The diffstat is not > negative unfortunately due to header guards in newer files. > I have patches to convert call sites over to set_memory.h instead of > cacheflush.h if there is sufficient interest. > --- > arch/arm/include/asm/cacheflush.h | 21 +------- > arch/arm/include/asm/set_memory.h | 32 ++++++++++++ > arch/arm64/include/asm/cacheflush.h | 6 +-- > arch/arm64/include/asm/set_memory.h | 26 ++++++++++ > arch/s390/include/asm/cacheflush.h | 6 +-- > arch/s390/include/asm/set_memory.h | 9 ++++ > arch/x86/include/asm/cacheflush.h | 96 +--------------------------------- > arch/x86/include/asm/set_memory.h | 100 ++++++++++++++++++++++++++++++++++++ > 8 files changed, 171 insertions(+), 125 deletions(-) > create mode 100644 arch/arm/include/asm/set_memory.h > create mode 100644 arch/arm64/include/asm/set_memory.h > create mode 100644 arch/s390/include/asm/set_memory.h > create mode 100644 arch/x86/include/asm/set_memory.h For s390: Acked-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
