diff options
author | Richard Braun <rbraun@sceen.net> | 2016-01-23 19:52:24 +0100 |
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committer | Richard Braun <rbraun@sceen.net> | 2016-01-23 21:24:25 +0100 |
commit | e835160b6b95f3b904fbc429392a63be1e4ed6b8 (patch) | |
tree | 28c0dd9f3b460b09ce1d9f8e7926b02bb93576b1 /linux/dev/glue/kmem.c | |
parent | 451b007174d87aae30872b1269fc922331665b9c (diff) |
Use vm_page as the physical memory allocator
This change replaces the historical page allocator with a buddy allocator
implemented in vm/vm_page.c. This allocator allows easy contiguous allocations
and also manages memory inside segments. In a future change, these segments
will be used to service requests with special constraints, such as "usable
for 16-bits DMA" or "must be part of the direct physical mapping".
* Makefrag.am (libkernel_a_SOURCES): Add vm/vm_page.c.
* i386/Makefrag.am (libkernel_a_SOURCES): Add i386/i386at/biosmem.{c,h}.
* i386/i386/vm_param.h: Include kern/macros.h.
(VM_PAGE_DMA_LIMIT, VM_PAGE_MAX_SEGS, VM_PAGE_DMA32_LIMIT,
VM_PAGE_DIRECTMAP_LIMIT, VM_PAGE_HIGHMEM_LIMIT, VM_PAGE_SEG_DMA,
VM_PAGE_SEG_DMA32, VM_PAGE_SEG_DIRECTMAP, VM_PAGE_SEG_HIGHMEM): New macros.
* i386/i386at/model_dep.c: Include i386at/biosmem.h.
(avail_next, avail_remaining): Remove variables.
(mem_size_init): Remove function.
(i386at_init): Initialize and use the biosmem module for early physical
memory management.
(pmap_free_pages): Return phys_last_addr instead of avail_remaining.
(init_alloc_aligned): Turn into a wrapper for biosmem_bootalloc.
(pmap_grab_page): Directly call init_alloc_aligned instead of pmap_next_page.
* i386/include/mach/i386/vm_types.h (phys_addr_t): New type.
* kern/bootstrap.c (free_bootstrap_pages): New function.
(bootstrap_create): Call free_bootstrap_pages instead of vm_page_create.
* kern/cpu_number.h (CPU_L1_SIZE): New macro.
* kern/slab.h: Include kern/cpu_number.h.
(CPU_L1_SIZE): Remove macro, moved to kern/cpu_number.h.
* kern/startup.c (setup_main): Change the value of machine_info.memory_size.
* linux/dev/glue/glue.h (alloc_contig_mem, free_contig_mem): Update prototypes.
* linux/dev/glue/kmem.c (linux_kmem_init): Don't use defunct page queue.
* linux/dev/init/main.c (linux_init): Don't free unused memory.
(alloc_contig_mem, free_contig_mem): Turn into wrappers for the vm_page
allocator.
* linux/pcmcia-cs/glue/ds.c (PAGE_SHIFT): Don't undefine.
* vm/pmap.h (pmap_startup, pmap_next_page): Remove prototypes.
* vm/vm_fault.c (vm_fault_page): Update calls to vm_page_convert.
* vm/vm_init.c (vm_mem_init): Call vm_page_info_all.
* vm/vm_object.c (vm_object_page_map): Update call to vm_page_init.
* vm/vm_page.h (vm_page_queue_free): Remove variable declaration.
(vm_page_create, vm_page_release_fictitious, vm_page_release): Remove
declarations.
(vm_page_convert, vm_page_init): Update prototypes.
(vm_page_grab_contig, vm_page_free_contig): New prototypes.
* vm/vm_resident.c (vm_page_template, vm_page_queue_free,
vm_page_big_pagenum): Remove variables.
(vm_page_bootstrap): Update and call vm_page_setup.
(pmap_steal_memory): Update and call vm_page_bootalloc.
(pmap_startup, vm_page_create, vm_page_grab_contiguous_pages): Remove functions.
(vm_page_init_template, vm_page_grab_contig,
vm_page_free_contig): New functions.
(vm_page_init): Update and call vm_page_init_template.
(vm_page_release_fictitious): Make static.
(vm_page_more_fictitious): Update call to vm_page_init.
(vm_page_convert): Rewrite to comply with vm_page.
(vm_page_grab): Update and call vm_page_alloc_pa.
(vm_page_release): Update and call vm_page_free_pa.
Diffstat (limited to 'linux/dev/glue/kmem.c')
-rw-r--r-- | linux/dev/glue/kmem.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/linux/dev/glue/kmem.c b/linux/dev/glue/kmem.c index ff052ff..ed57610 100644 --- a/linux/dev/glue/kmem.c +++ b/linux/dev/glue/kmem.c @@ -111,10 +111,8 @@ linux_kmem_init () for (p = pages, j = 0; j < MEM_CHUNK_SIZE - PAGE_SIZE; j += PAGE_SIZE) { assert (p->phys_addr < MEM_DMA_LIMIT); - assert (p->phys_addr + PAGE_SIZE - == ((vm_page_t) p->pageq.next)->phys_addr); - - p = (vm_page_t) p->pageq.next; + assert (p->phys_addr + PAGE_SIZE == (p + 1)->phys_addr); + p++; } pages_free[i].end = pages_free[i].start + MEM_CHUNK_SIZE; |