On 11/24/2018 05:14 AM, Andrew Morton wrote: > On Fri, 23 Nov 2018 15:24:16 +0530 Anshuman Khandual <anshuman.khandual@xxxxxxx> wrote: > >> At present there are multiple places where invalid node number is encoded >> as -1. Even though implicitly understood it is always better to have macros >> in there. Replace these open encodings for an invalid node number with the >> global macro NUMA_NO_NODE. This helps remove NUMA related assumptions like >> 'invalid node' from various places redirecting them to a common definition. >> >> ... >> >> Build tested this with multiple cross compiler options like alpha, sparc, >> arm64, x86, powerpc, powerpc64le etc with their default config which might >> not have compiled tested all driver related changes. I will appreciate >> folks giving this a test in their respective build environment. >> >> All these places for replacement were found by running the following grep >> patterns on the entire kernel code. Please let me know if this might have >> missed some instances. This might also have replaced some false positives. >> I will appreciate suggestions, inputs and review. >> >> 1. git grep "nid == -1" >> 2. git grep "node == -1" >> 3. git grep "nid = -1" >> 4. git grep "node = -1" > > The build testing is good, but I worry that some of the affected files > don't clearly have numa.h in their include paths, for the NUMA_NO_NODE > definition. > > The first thing I looked it is arch/powerpc/include/asm/pci-bridge.h. > Maybe it somehow manages to include numa.h via some nested include, but > if so, is that reliable across all config combinations and as code > evolves? > > So I think that the patch should have added an explicit include of > numa.h, especially in cases where the affected file previously had no > references to any of the things which numa.h defines. Fair enough. Will include numa.h in those particular files.
