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xpmem: porting xpmem v2.6.3

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implement xpmem_get, xpmem_release, xpmem_attach, xpmem_detach
This commit is contained in:
Yoichi Umezawa
2017-03-29 18:20:53 +09:00
parent 4ee0c05e08
commit c38d536aaa
7 changed files with 1770 additions and 96 deletions
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28
kernel/process.c
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@@ -31,6 +31,7 @@
#include <auxvec.h>
#include <timer.h>
#include <mman.h>
#include <xpmem.h>
//#define DEBUG_PRINT_PROCESS
@@ -637,6 +638,7 @@ static int copy_user_ranges(struct process_vm *vm, struct process_vm *orgvm)
range->memobj = src_range->memobj;
range->objoff = src_range->objoff;
range->pgshift = src_range->pgshift;
range->private_data = src_range->private_data;
if (range->memobj) {
memobj_ref(range->memobj);
}
@@ -734,6 +736,7 @@ int split_process_memory_range(struct process_vm *vm, struct vm_range *range,
newrange->end = range->end;
newrange->flag = range->flag;
newrange->pgshift = range->pgshift;
newrange->private_data = range->private_data;
if (range->memobj) {
memobj_ref(range->memobj);
@@ -953,6 +956,10 @@ int remove_process_memory_range(struct process_vm *vm,
ro_freed = 1;
}
if (freerange->private_data) {
xpmem_remove_process_memory_range(vm, freerange);
}
error = free_process_memory_range(vm, freerange);
if (error) {
ekprintf("remove_process_memory_range(%p,%lx,%lx):"
@@ -1058,6 +1065,7 @@ int add_process_memory_range(struct process_vm *vm,
range->memobj = memobj;
range->objoff = offset;
range->pgshift = pgshift;
range->private_data = NULL;
rc = 0;
if (phys == NOPHYS) {
@@ -1793,7 +1801,12 @@ static int do_page_fault_process_vm(struct process_vm *vm, void *fault_addr0, ui
}
}
error = page_fault_process_memory_range(vm, range, fault_addr, reason);
if (!range->private_data) {
error = page_fault_process_memory_range(vm, range, fault_addr, reason);
}
else {
error = xpmem_fault_process_memory_range(vm, range, fault_addr, reason);
}
if (error == -ERESTART) {
goto out;
}
@@ -2209,6 +2222,19 @@ release_process_vm(struct process_vm *vm)
return;
}
{
long irqstate;
struct mckfd *fdp;
irqstate = ihk_mc_spinlock_lock(&proc->mckfd_lock);
for (fdp = proc->mckfd; fdp; fdp = fdp->next) {
if (fdp->close_cb) {
fdp->close_cb(fdp, NULL);
}
}
ihk_mc_spinlock_unlock(&proc->mckfd_lock, irqstate);
}
if(vm->free_cb)
vm->free_cb(vm, vm->opt);