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core: re-design memory allocator (fix #1091)

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* Core_mem_allocator: implement Range_allocator interface
* Core_mem_allocator: allocate with page-granularity only
* Use slab allocators in core where meaningful (e.g. dataspace objects)
This commit is contained in:
Stefan Kalkowski
2014-03-10 15:24:53 +01:00
committed by Norman Feske
parent 36bfb56e49
commit 0dece91973
27 changed files with 242 additions and 247 deletions
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2
base-codezero/src/core/include/platform.h
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@@ -60,7 +60,7 @@ namespace Genode {
Range_allocator *io_port_alloc() { return &_io_port_alloc; }
Range_allocator *irq_alloc() { return &_irq_alloc; }
Range_allocator *region_alloc() { return _core_mem_alloc.virt_alloc(); }
Allocator *core_mem_alloc() { return &_core_mem_alloc; }
Range_allocator *core_mem_alloc() { return &_core_mem_alloc; }
addr_t vm_start() const { return _vm_base; }
size_t vm_size() const { return _vm_size; }
Rom_fs *rom_fs() { return &_rom_fs; }

6
base-codezero/src/core/include/util.h
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@@ -23,9 +23,9 @@
namespace Genode {
inline size_t get_page_size_log2() { return 12; }
inline size_t get_page_size() { return 1 << get_page_size_log2(); }
inline addr_t get_page_mask() { return ~(get_page_size() - 1); }
constexpr size_t get_page_size_log2() { return 12; }
constexpr size_t get_page_size() { return 1 << get_page_size_log2(); }
constexpr addr_t get_page_mask() { return ~(get_page_size() - 1); }
inline addr_t trunc_page(addr_t addr) { return addr & get_page_mask(); }
inline addr_t round_page(addr_t addr) { return trunc_page(addr + get_page_size() - 1); }

10
base-codezero/src/core/platform.cc
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@@ -126,9 +126,15 @@ int Platform::_init_rom_fs()
** Support for core memory management **
****************************************/
bool Core_mem_allocator::Mapped_mem_allocator::_map_local(addr_t virt_addr, addr_t phys_addr, unsigned size_log2)
bool Core_mem_allocator::_map_local(addr_t virt_addr, addr_t phys_addr, unsigned size)
{
return map_local(phys_addr, virt_addr, 1 << (size_log2 - get_page_size_log2()));
return map_local(phys_addr, virt_addr, size / get_page_size());
}
bool Core_mem_allocator::_unmap_local(addr_t virt_addr, unsigned size)
{
return unmap_local(virt_addr, size / get_page_size());
}