justin/jsix_import
1
0
Fork 0
Code Issues 1 Pull Requests Actions Packages Projects Releases Wiki Activity

[kernel] Replace buffer_cache with vm_area_buffers

Browse Source 
In order to reduce the amount of tracked state, now use the
vm_area_buffers instead of a VMA with buffer_cache on top.
This commit is contained in:
Justin C. Miller
2020-09-27 15:34:24 -07:00
parent 67ebc58812
commit f7f8bb3f45
14 changed files with 161 additions and 120 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/kernel/objects/thread.cpp
View File

@@ -3,12 +3,14 @@
#include "log.h"
#include "objects/thread.h"
#include "objects/process.h"
#include "objects/vm_area.h"
#include "scheduler.h"
#include "buffer_cache.h"
extern "C" void kernel_to_user_trampoline();
static constexpr j6_signal_t thread_default_signals = 0;
extern vm_area_buffers g_kernel_stacks;
thread::thread(process &parent, uint8_t pri, uintptr_t rsp0) :
kobject(kobject::type::thread, thread_default_signals),
m_parent(parent),
@@ -30,7 +32,7 @@ thread::thread(process &parent, uint8_t pri, uintptr_t rsp0) :
thread::~thread()
{
g_kstack_cache.return_buffer(m_tcb.kernel_stack);
g_kernel_stacks.return_buffer(m_tcb.kernel_stack);
}
thread *
@@ -179,7 +181,7 @@ thread::setup_kernel_stack()
constexpr unsigned null_frame_entries = 2;
constexpr size_t null_frame_size = null_frame_entries * sizeof(uint64_t);
uintptr_t stack_addr = g_kstack_cache.get_buffer();
uintptr_t stack_addr = g_kernel_stacks.get_buffer();
uintptr_t stack_end = stack_addr + stack_bytes;
uint64_t *null_frame = reinterpret_cast<uint64_t*>(stack_end - null_frame_size);