4edb93adde
Some of the structures, notably 'cmd', in the lib console stuff are a little too generically named and have collided with some other code so prefix the names a bit more cleanly with console_ The change is largely mechanical, and folks with out of tree code can easily switch by renaming: cmd -> console_cmd cmd_args -> console_cmd_args cmd_block -> console_cmd_block console_cmd -> console_cmd_func Apologies if this breaks you but it should be pretty easy to fix.
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
/*
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* Copyright (c) 2015 Google, Inc. All rights reserved
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#include <lib/page_alloc.h>
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#include <lk/debug.h>
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#include <assert.h>
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#include <string.h>
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#include <lk/trace.h>
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#include <lk/console_cmd.h>
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#if WITH_KERNEL_VM
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#include <kernel/vm.h>
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#else
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#include <kernel/novm.h>
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#endif
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/* A simple page-aligned wrapper around the pmm or novm implementation of
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* the underlying physical page allocator. Used by system heaps or any
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* other user that wants pages of memory but doesn't want to use LK
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* specific apis.
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*/
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#define LOCAL_TRACE 0
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#if WITH_STATIC_HEAP
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#error "fix static heap post page allocator and novm stuff"
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#if !defined(HEAP_START) || !defined(HEAP_LEN)
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#error WITH_STATIC_HEAP set but no HEAP_START or HEAP_LEN defined
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#endif
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#endif
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void *page_alloc(size_t pages, int arena) {
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#if WITH_KERNEL_VM
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void *result = pmm_alloc_kpages(pages, NULL);
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return result;
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#else
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void *result = novm_alloc_pages(pages, arena);
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return result;
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#endif
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}
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void page_free(void *ptr, size_t pages) {
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#if WITH_KERNEL_VM
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DEBUG_ASSERT(IS_PAGE_ALIGNED((uintptr_t)ptr));
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pmm_free_kpages(ptr, pages);
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#else
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novm_free_pages(ptr, pages);
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#endif
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}
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int page_get_arenas(struct page_range *ranges, int number_of_ranges) {
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#if WITH_KERNEL_VM
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ranges[0].address = kvaddr_get_range(&ranges[0].size);
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return 1;
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#else
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return novm_get_arenas(ranges, number_of_ranges);
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#endif // WITH_KERNEL_VM
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}
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void *page_first_alloc(size_t *size_return) {
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#if WITH_KERNEL_VM
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*size_return = PAGE_SIZE;
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return page_alloc(1, PAGE_ALLOC_ANY_ARENA);
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#else
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return novm_alloc_unaligned(size_return);
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#endif
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}
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#if LK_DEBUGLEVEL > 1
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static int cmd_page_alloc(int argc, const console_cmd_args *argv);
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static void page_alloc_dump(void);
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STATIC_COMMAND_START
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STATIC_COMMAND("page_alloc", "page allocator debug commands", &cmd_page_alloc)
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STATIC_COMMAND_END(page_alloc);
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static int cmd_page_alloc(int argc, const console_cmd_args *argv) {
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if (argc != 2) {
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notenoughargs:
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printf("not enough arguments\n");
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usage:
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printf("usage:\n");
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printf("\t%s info\n", argv[0].str);
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return -1;
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}
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if (strcmp(argv[1].str, "info") == 0) {
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page_alloc_dump();
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} else {
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printf("unrecognized command\n");
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goto usage;
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}
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return 0;
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}
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static void page_alloc_dump(void) {
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#ifdef WITH_KERNEL_VM
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dprintf(INFO, "Page allocator is based on pmm\n");
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#else
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dprintf(INFO, "Page allocator is based on novm\n");
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#endif
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}
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#endif
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