The patch titled
vmemmap ppc64: convert VMM_* macros to a real function
has been added to the -mm tree. Its filename is
ppc64-sparsemem_vmemmap-support-vmemmap-ppc64-convert-vmm_-macros-to-a-real-function.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: vmemmap ppc64: convert VMM_* macros to a real function
From: Andy Whitcroft <apw@xxxxxxxxxxxx>
The code to convert an address within the vmemmap to the start of the section
is currently implemented using macros. Convert these over to a new helper
function, clarifying the code and gaining type checking.
Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: Dave Hansen <haveblue@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/mm/init_64.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff -puN arch/powerpc/mm/init_64.c~ppc64-sparsemem_vmemmap-support-vmemmap-ppc64-convert-vmm_-macros-to-a-real-function arch/powerpc/mm/init_64.c
--- a/arch/powerpc/mm/init_64.c~ppc64-sparsemem_vmemmap-support-vmemmap-ppc64-convert-vmm_-macros-to-a-real-function
+++ a/arch/powerpc/mm/init_64.c
@@ -185,14 +185,19 @@ void pgtable_cache_init(void)
#ifdef CONFIG_ARCH_POPULATES_SPARSEMEM_VMEMMAP
/*
- * Convert an address within the vmemmap into a pfn. Note that we have
- * to do this by hand as the proffered address may not be correctly aligned.
+ * Given an address within the vmemmap, determine the pfn of the page that
+ * represents the start of the section it is within. Note that we have to
+ * do this by hand as the proffered address may not be correctly aligned.
* Subtraction of non-aligned pointers produces undefined results.
*/
-#define VMM_SECTION(addr) \
- (((((unsigned long)(addr)) - ((unsigned long)(vmemmap))) / \
- sizeof(struct page)) >> PFN_SECTION_SHIFT)
-#define VMM_SECTION_PAGE(addr) (VMM_SECTION(addr) << PFN_SECTION_SHIFT)
+unsigned long __meminit vmemmap_section_start(struct page *page)
+{
+ unsigned long offset = ((unsigned long)page) -
+ ((unsigned long)(vmemmap));
+
+ /* Return the pfn of the start of the section. */
+ return (offset / sizeof(struct page)) & PAGE_SECTION_MASK;
+}
/*
* Check if this vmemmap page is already initialised. If any section
@@ -204,7 +209,7 @@ int __meminit vmemmap_populated(unsigned
unsigned long end = start + page_size;
for (; start < end; start += (PAGES_PER_SECTION * sizeof(struct page)))
- if (pfn_valid(VMM_SECTION_PAGE(start)))
+ if (pfn_valid(vmemmap_section_start(start)))
return 1;
return 0;
_
Patches currently in -mm which might be from apw@xxxxxxxxxxxx are
x86_64-get-mp_bus_to_node-as-early-v2.patch
x86_64-use-bus-conf-in-nb-conf-fun1-to-get-bus-range-on-node.patch
try-parent-numa_node-at-first-before-using-default-v2.patch
net-use-numa_node-in-net_devcice-dev-instead-of-parent.patch
dma-use-dev_to_node-to-get-node-for-device-in-dma_alloc_pages.patch
pci-device-ensure-sysdata-initialised-v4.patch
sparsemem-ensure-we-initialise-the-node-mapping-for-sparsemem_static.patch
sparsemem-ensure-we-initialise-the-node-mapping-for-sparsemem_static-fix.patch
sparsemem-clean-up-spelling-error-in-comments.patch
sparsemem-record-when-a-section-has-a-valid-mem_map.patch
sparsemem-record-when-a-section-has-a-valid-mem_map-fix.patch
generic-virtual-memmap-support-for-sparsemem.patch
generic-virtual-memmap-support-for-sparsemem-fix.patch
generic-virtual-memmap-support-for-sparsemem-remove-excess-debugging.patch
generic-virtual-memmap-support-for-sparsemem-simplify-initialisation-code-and-reduce-duplication.patch
generic-virtual-memmap-support-for-sparsemem-pull-out-the-vmemmap-code-into-its-own-file.patch
x86_64-sparsemem_vmemmap-2m-page-size-support.patch
x86_64-sparsemem_vmemmap-2m-page-size-support-ensure-end-of-section-memmap-is-initialised.patch
ia64-sparsemem_vmemmap-16k-page-size-support.patch
sparc64-sparsemem_vmemmap-support.patch
ppc64-sparsemem_vmemmap-support.patch
ppc64-sparsemem_vmemmap-support-vmemmap-ppc64-convert-vmm_-macros-to-a-real-function.patch
add-a-bitmap-that-is-used-to-track-flags-affecting-a-block-of-pages.patch
add-a-configure-option-to-group-pages-by-mobility.patch
move-free-pages-between-lists-on-steal.patch
group-short-lived-and-reclaimable-kernel-allocations.patch
do-not-group-pages-by-mobility-type-on-low-memory-systems.patch
fix-corruption-of-memmap-on-ia64-sparsemem-when-mem_section-is-not-a-power-of-2.patch
fix-corruption-of-memmap-on-ia64-sparsemem-when-mem_section-is-not-a-power-of-2-fix.patch
bias-the-location-of-pages-freed-for-min_free_kbytes-in-the-same-max_order_nr_pages-blocks.patch
remove-page_group_by_mobility.patch
dont-group-high-order-atomic-allocations.patch
fix-calculation-in-move_freepages_block-for-counting-pages.patch
breakout-page_order-to-internalh-to-avoid-special-knowledge-of-the-buddy-allocator.patch
do-not-depend-on-max_order-when-grouping-pages-by-mobility.patch
print-out-statistics-in-relation-to-fragmentation-avoidance-to-proc-pagetypeinfo.patch
have-kswapd-keep-a-minimum-order-free-other-than-order-0.patch
only-check-absolute-watermarks-for-alloc_high-and-alloc_harder-allocations.patch
rename-gfp_high_movable-to-gfp_highuser_movable-prefetch.patch
page-owner-tracking-leak-detector.patch
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