lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

flagday: kill pt_regs argument of do_fork()

Browse Source 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-10-22 23:10:08 -04:00
parent 18c26c27ae
commit e80d6661c3
9 changed files with 19 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
kernel/fork.c
View File

@@ -1527,8 +1527,6 @@ static inline void init_idle_pids(struct pid_link *links)
struct task_struct * __cpuinit fork_idle(int cpu)
{
struct task_struct *task;
struct pt_regs regs;
task = copy_process(CLONE_VM, 0, 0, NULL, &init_struct_pid, 0);
if (!IS_ERR(task)) {
init_idle_pids(task->pids);
@@ -1546,7 +1544,6 @@ struct task_struct * __cpuinit fork_idle(int cpu)
*/
long do_fork(unsigned long clone_flags,
unsigned long stack_start,
struct pt_regs *regs,
unsigned long stack_size,
int __user *parent_tidptr,
int __user *child_tidptr)
@@ -1576,7 +1573,7 @@ long do_fork(unsigned long clone_flags,
* requested, no event is reported; otherwise, report if the event
* for the type of forking is enabled.
*/
if (!(clone_flags & CLONE_UNTRACED) && likely(user_mode(regs))) {
if (!(clone_flags & CLONE_UNTRACED)) {
if (clone_flags & CLONE_VFORK)
trace = PTRACE_EVENT_VFORK;
else if ((clone_flags & CSIGNAL) != SIGCHLD)
@@ -1632,7 +1629,7 @@ long do_fork(unsigned long clone_flags,
*/
pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
{
return do_fork(flags|CLONE_VM|CLONE_UNTRACED, (unsigned long)fn, NULL,
return do_fork(flags|CLONE_VM|CLONE_UNTRACED, (unsigned long)fn,
(unsigned long)arg, NULL, NULL);
}
#endif
@@ -1641,7 +1638,7 @@ pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
SYSCALL_DEFINE0(fork)
{
#ifdef CONFIG_MMU
return do_fork(SIGCHLD, 0, current_pt_regs(), 0, NULL, NULL);
return do_fork(SIGCHLD, 0, 0, NULL, NULL);
#else
/* can not support in nommu mode */
return(-EINVAL);
@@ -1652,7 +1649,7 @@ SYSCALL_DEFINE0(fork)
#ifdef __ARCH_WANT_SYS_VFORK
SYSCALL_DEFINE0(vfork)
{
return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, current_pt_regs(),
return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
0, NULL, NULL);
}
#endif
@@ -1675,7 +1672,7 @@ SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
int, tls_val)
#endif
{
return do_fork(clone_flags, newsp, current_pt_regs(), 0,
return do_fork(clone_flags, newsp, 0,
parent_tidptr, child_tidptr);
}
#endif