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Added a new system call sys_timer.

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sys_timer accumulates timer ticks into seconds, minutes, hours and days.
It's left to the user to calculate from days into a date. It is not yet
known if the calculation is even roughly correct.

Reduced 2 kmem_reclaim/grant calls into one kmem_control call.
This commit is contained in:
Bahadir Balban
2008-04-18 00:46:29 +01:00
parent 73058dc249
commit a87914910c
12 changed files with 122 additions and 133 deletions
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33
src/api/syscall.c
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@@ -83,33 +83,28 @@ int validate_granted_pages(unsigned long pfn, int npages)
* this memory is used for thread creation and memory mapping, (e.g. new
* page tables, page middle directories, per-task kernel stack etc.)
*/
int sys_kmem_grant(struct syscall_args *regs)
int sys_kmem_control(struct syscall_args *regs)
{
unsigned long pfn = (unsigned long)regs->r0;
int npages = (int)regs->r1;
int grant = (int)regs->r2;
/*
* Check if given set of pages are outside the pages already
* owned by the kernel.
*/
if (validate_granted_pages(pfn, npages) < 0)
return -EINVAL;
/* Pager is granting us pages */
if (grant) {
/*
* Check if given set of pages are outside the pages already
* owned by the kernel.
*/
if (validate_granted_pages(pfn, npages) < 0)
return -EINVAL;
/* Add the granted pages to the allocator */
if (pgalloc_add_new_grant(pfn, npages))
/* Add the granted pages to the allocator */
if (pgalloc_add_new_grant(pfn, npages))
BUG();
} else /* Reclaim not implemented yet */
BUG();
return 0;
}
/* FIXME:
* The pager reclaims memory from the kernel whenever it thinks this is just.
*/
int sys_kmem_reclaim(struct syscall_args *regs)
{
BUG();
return 0;
}