commit e80d6661c3a5caa0cebec0853c6cb0db090fb506
author Al Viro <viro@zeniv.linux.org.uk> Mon Oct 22 23:10:08 2012 -0400
committer Al Viro <viro@zeniv.linux.org.uk> Thu Nov 29 00:01:08 2012 -0500
tree efc60762bbcdf8904f9779310ac60d0131ac9f3d
parent 18c26c27ae0abe82253cb2e2363df465dbbb657e

flagday: kill pt_regs argument of do_fork()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

kernel/fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 0e68b66..5407307 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1527,8 +1527,6 @@
 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 @@
  */
 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 @@
 	 * 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 @@
  */
 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 @@
 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 @@
 #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 @@
 		 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