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- Proc locking.

Browse source 
- P_INMEM -> PS_INMEM.
This commit is contained in:
John Baldwin 2001-01-24 09:49:49 +00:00
parent 4cbdef8448
commit 16fdce5377
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=71526
3 changed files with 54 additions and 7 deletions
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6
sys/amd64/amd64/pmap.c
View file

@ -816,19 +816,25 @@ pmap_new_proc(p)
/*
* allocate object for the upages
*/
PROC_LOCK(p);
if ((upobj = p->p_upages_obj) == NULL) {
PROC_UNLOCK(p);
upobj = vm_object_allocate( OBJT_DEFAULT, UPAGES);
PROC_LOCK(p);
p->p_upages_obj = upobj;
}
/* get a kernel virtual address for the UPAGES for this proc */
if ((up = p->p_addr) == NULL) {
PROC_UNLOCK(p);
up = (struct user *) kmem_alloc_nofault(kernel_map,
UPAGES * PAGE_SIZE);
if (up == NULL)
panic("pmap_new_proc: u_map allocation failed");
PROC_LOCK(p);
p->p_addr = up;
}
PROC_UNLOCK(p);
ptek = (unsigned *) vtopte((vm_offset_t) up);

6
sys/i386/i386/pmap.c
View file

@ -816,19 +816,25 @@ pmap_new_proc(p)
/*
* allocate object for the upages
*/
PROC_LOCK(p);
if ((upobj = p->p_upages_obj) == NULL) {
PROC_UNLOCK(p);
upobj = vm_object_allocate( OBJT_DEFAULT, UPAGES);
PROC_LOCK(p);
p->p_upages_obj = upobj;
}
/* get a kernel virtual address for the UPAGES for this proc */
if ((up = p->p_addr) == NULL) {
PROC_UNLOCK(p);
up = (struct user *) kmem_alloc_nofault(kernel_map,
UPAGES * PAGE_SIZE);
if (up == NULL)
panic("pmap_new_proc: u_map allocation failed");
PROC_LOCK(p);
p->p_addr = up;
}
PROC_UNLOCK(p);
ptek = (unsigned *) vtopte((vm_offset_t) up);

49
sys/i386/i386/procfs_machdep.c
View file

@ -85,8 +85,13 @@ procfs_read_regs(p, regs)
struct proc *p;
struct reg *regs;
{
if ((p->p_flag & P_INMEM) == 0)
mtx_enter(&sched_lock, MTX_SPIN);
if ((p->p_sflag & PS_INMEM) == 0) {
mtx_exit(&sched_lock, MTX_SPIN);
return (EIO);
}
mtx_exit(&sched_lock, MTX_SPIN);
return (fill_regs(p, regs));
}
@ -95,8 +100,13 @@ procfs_write_regs(p, regs)
struct proc *p;
struct reg *regs;
{
if ((p->p_flag & P_INMEM) == 0)
mtx_enter(&sched_lock, MTX_SPIN);
if ((p->p_sflag & PS_INMEM) == 0) {
mtx_exit(&sched_lock, MTX_SPIN);
return (EIO);
}
mtx_exit(&sched_lock, MTX_SPIN);
return (set_regs(p, regs));
}
@ -105,8 +115,13 @@ procfs_read_dbregs(p, dbregs)
struct proc *p;
struct dbreg *dbregs;
{
if ((p->p_flag & P_INMEM) == 0)
mtx_enter(&sched_lock, MTX_SPIN);
if ((p->p_sflag & PS_INMEM) == 0) {
mtx_exit(&sched_lock, MTX_SPIN);
return (EIO);
}
mtx_exit(&sched_lock, MTX_SPIN);
return (fill_dbregs(p, dbregs));
}
@ -115,8 +130,13 @@ procfs_write_dbregs(p, dbregs)
struct proc *p;
struct dbreg *dbregs;
{
if ((p->p_flag & P_INMEM) == 0)
mtx_enter(&sched_lock, MTX_SPIN);
if ((p->p_sflag & PS_INMEM) == 0) {
mtx_exit(&sched_lock, MTX_SPIN);
return (EIO);
}
mtx_exit(&sched_lock, MTX_SPIN);
return (set_dbregs(p, dbregs));
}
@ -130,8 +150,13 @@ procfs_read_fpregs(p, fpregs)
struct proc *p;
struct fpreg *fpregs;
{
if ((p->p_flag & P_INMEM) == 0)
mtx_enter(&sched_lock, MTX_SPIN);
if ((p->p_sflag & PS_INMEM) == 0) {
mtx_exit(&sched_lock, MTX_SPIN);
return (EIO);
}
mtx_exit(&sched_lock, MTX_SPIN);
return (fill_fpregs(p, fpregs));
}
@ -140,8 +165,13 @@ procfs_write_fpregs(p, fpregs)
struct proc *p;
struct fpreg *fpregs;
{
if ((p->p_flag & P_INMEM) == 0)
mtx_enter(&sched_lock, MTX_SPIN);
if ((p->p_sflag & PS_INMEM) == 0) {
mtx_exit(&sched_lock, MTX_SPIN);
return (EIO);
}
mtx_exit(&sched_lock, MTX_SPIN);
return (set_fpregs(p, fpregs));
}
@ -149,7 +179,12 @@ int
procfs_sstep(p)
struct proc *p;
{
if ((p->p_flag & P_INMEM) == 0)
mtx_enter(&sched_lock, MTX_SPIN);
if ((p->p_sflag & PS_INMEM) == 0) {
mtx_exit(&sched_lock, MTX_SPIN);
return (EIO);
}
mtx_exit(&sched_lock, MTX_SPIN);
return (ptrace_single_step(p));
}