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authorAl Viro <viro@zeniv.linux.org.uk>2012-10-21 21:54:27 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2012-11-29 04:13:54 +0100
commit38a61b6b4a45ec8c82c75403848e1c579113c3c5 (patch)
tree140ebeb63daf0a526a0a3ba91cd53991681e0ffe /arch/arm/kernel/process.c
parentx86, um: switch to generic fork/vfork/clone (diff)
downloadlinux-38a61b6b4a45ec8c82c75403848e1c579113c3c5.tar.xz
linux-38a61b6b4a45ec8c82c75403848e1c579113c3c5.zip
arm: switch to generic fork/vfork/clone
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/process.c')
-rw-r--r--arch/arm/kernel/process.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 90084a6de35a..4ab80bbb6d95 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -376,17 +376,18 @@ asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
int
copy_thread(unsigned long clone_flags, unsigned long stack_start,
- unsigned long stk_sz, struct task_struct *p, struct pt_regs *regs)
+ unsigned long stk_sz, struct task_struct *p, struct pt_regs *unused)
{
struct thread_info *thread = task_thread_info(p);
struct pt_regs *childregs = task_pt_regs(p);
memset(&thread->cpu_context, 0, sizeof(struct cpu_context_save));
- if (likely(regs)) {
- *childregs = *regs;
+ if (likely(!(p->flags & PF_KTHREAD))) {
+ *childregs = *current_pt_regs();
childregs->ARM_r0 = 0;
- childregs->ARM_sp = stack_start;
+ if (stack_start)
+ childregs->ARM_sp = stack_start;
} else {
memset(childregs, 0, sizeof(struct pt_regs));
thread->cpu_context.r4 = stk_sz;
@@ -399,7 +400,7 @@ copy_thread(unsigned long clone_flags, unsigned long stack_start,
clear_ptrace_hw_breakpoint(p);
if (clone_flags & CLONE_SETTLS)
- thread->tp_value = regs->ARM_r3;
+ thread->tp_value = childregs->ARM_r3;
thread_notify(THREAD_NOTIFY_COPY, thread);