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Add a local proc *p in exec_new_vmspace() to avoid repeated dereferencing

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This commit is contained in:
Alan Cox 2002-03-31 00:05:30 +00:00
parent cd2c8e3ef6
commit 5e20c11f19
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=93460
1 changed files with 7 additions and 6 deletions
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13
sys/kern/kern_exec.c
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@ -577,7 +577,8 @@ exec_new_vmspace(imgp)
{
int error;
struct execlist *ep;
struct vmspace *vmspace = imgp->proc->p_vmspace;
struct proc *p = imgp->proc;
struct vmspace *vmspace = p->p_vmspace;
vm_offset_t stack_addr = USRSTACK - maxssiz;
GIANT_REQUIRED;
@ -588,7 +589,7 @@ exec_new_vmspace(imgp)
* Perform functions registered with at_exec().
*/
TAILQ_FOREACH(ep, &exec_list, next)
(*ep->function)(imgp->proc);
(*ep->function)(p);
/*
* Blow away entire process VM, if address space not shared,
@ -597,12 +598,12 @@ exec_new_vmspace(imgp)
*/
if (vmspace->vm_refcnt == 1) {
if (vmspace->vm_shm)
shmexit(imgp->proc);
shmexit(p);
pmap_remove_pages(vmspace_pmap(vmspace), 0, VM_MAXUSER_ADDRESS);
vm_map_remove(&vmspace->vm_map, 0, VM_MAXUSER_ADDRESS);
} else {
vmspace_exec(imgp->proc);
vmspace = imgp->proc->p_vmspace;
vmspace_exec(p);
vmspace = p->p_vmspace;
}
/* Allocate a new stack */
@ -623,7 +624,7 @@ exec_new_vmspace(imgp)
error = vm_map_find(&vmspace->vm_map, 0, 0, &bsaddr,
4*PAGE_SIZE, 0,
VM_PROT_ALL, VM_PROT_ALL, 0);
FIRST_THREAD_IN_PROC(imgp->proc)->td_md.md_bspstore = bsaddr;
FIRST_THREAD_IN_PROC(p)->td_md.md_bspstore = bsaddr;
}
#endif