diff options
34 files changed, 45 insertions, 60 deletions
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index e9705bc..b5d0d09 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -241,7 +241,7 @@ release_thread(struct task_struct *dead_task) int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg, - struct task_struct *p, struct pt_regs *wontuse) + struct task_struct *p) { extern void ret_from_fork(void); extern void ret_from_kernel_thread(void); diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 4ab80bb..9800338 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -376,7 +376,7 @@ 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 *unused) + unsigned long stk_sz, struct task_struct *p) { struct thread_info *thread = task_thread_info(p); struct pt_regs *childregs = task_pt_regs(p); diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 5a1335c..cb0956b 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -234,8 +234,7 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) 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 *unused) + unsigned long stk_sz, struct task_struct *p) { struct pt_regs *childregs = task_pt_regs(p); unsigned long tls = p->thread.tp_value; diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c index 03d7aa4..fd78f58 100644 --- a/arch/avr32/kernel/process.c +++ b/arch/avr32/kernel/process.c @@ -299,7 +299,7 @@ asmlinkage void syscall_return(void); int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + struct task_struct *p) { struct pt_regs *childregs = task_pt_regs(p); diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c index e5ae8fc..582276e 100644 --- a/arch/blackfin/kernel/process.c +++ b/arch/blackfin/kernel/process.c @@ -141,14 +141,14 @@ asmlinkage int bfin_clone(unsigned long clone_flags, unsigned long newsp) int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long topstk, - struct task_struct *p, struct pt_regs *regs) + struct task_struct *p) { struct pt_regs *childregs; unsigned long *v; childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1; v = ((unsigned long *)childregs) - 2; - if (unlikely(!regs)) { + if (unlikely(p->flags & PF_KTHREAD)) { memset(childregs, 0, sizeof(struct pt_regs)); v[0] = usp; v[1] = topstk; @@ -157,7 +157,7 @@ copy_thread(unsigned long clone_flags, __asm__ __volatile__("%0 = syscfg;":"=da"(childregs->syscfg):); p->thread.usp = 0; } else { - *childregs = *regs; + *childregs = *current_pt_regs(); childregs->r0 = 0; p->thread.usp = usp ? : rdusp(); v[0] = v[1] = 0; diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c index a3f9189..6434df4 100644 --- a/arch/c6x/kernel/process.c +++ b/arch/c6x/kernel/process.c @@ -139,7 +139,7 @@ void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp) */ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long ustk_size, - struct task_struct *p, struct pt_regs *unused) + struct task_struct *p) { struct pt_regs *childregs; diff --git a/arch/cris/arch-v10/kernel/process.c b/arch/cris/arch-v10/kernel/process.c index 520547c..b101875 100644 --- a/arch/cris/arch-v10/kernel/process.c +++ b/arch/cris/arch-v10/kernel/process.c @@ -94,8 +94,7 @@ asmlinkage void ret_from_fork(void); asmlinkage void ret_from_kernel_thread(void); int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { struct pt_regs *childregs = task_pt_regs(p); struct switch_stack *swstack = ((struct switch_stack *)childregs) - 1; diff --git a/arch/cris/arch-v32/kernel/process.c b/arch/cris/arch-v32/kernel/process.c index 331e702..2b23ef0 100644 --- a/arch/cris/arch-v32/kernel/process.c +++ b/arch/cris/arch-v32/kernel/process.c @@ -109,8 +109,7 @@ extern asmlinkage void ret_from_kernel_thread(void); int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { struct pt_regs *childregs = task_pt_regs(p); struct switch_stack *swstack = ((struct switch_stack *) childregs) - 1; diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c index 0039bf7..23916b2 100644 --- a/arch/frv/kernel/process.c +++ b/arch/frv/kernel/process.c @@ -144,7 +144,7 @@ inline unsigned long user_stack(const struct pt_regs *regs) */ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + struct task_struct *p) { struct pt_regs *childregs; diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c index b0fb405..b609f63 100644 --- a/arch/h8300/kernel/process.c +++ b/arch/h8300/kernel/process.c @@ -129,7 +129,7 @@ void flush_thread(void) int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long topstk, - struct task_struct * p, struct pt_regs *unused) + struct task_struct * p) { struct pt_regs * childregs; diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c index 36dce17..06ae9ff 100644 --- a/arch/hexagon/kernel/process.c +++ b/arch/hexagon/kernel/process.c @@ -87,8 +87,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk) * Copy architecture-specific thread state */ int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, struct task_struct *p, - struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { struct thread_info *ti = task_thread_info(p); struct hexagon_switch_stack *ss; diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index 25543a2..31360cb 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -393,12 +393,13 @@ ia64_load_extra (struct task_struct *task) int copy_thread(unsigned long clone_flags, unsigned long user_stack_base, unsigned long user_stack_size, - struct task_struct *p, struct pt_regs *regs) + struct task_struct *p) { extern char ia64_ret_from_clone; struct switch_stack *child_stack, *stack; unsigned long rbs, child_rbs, rbs_size; struct pt_regs *child_ptregs; + struct pt_regs *regs = current_pt_regs(); int retval = 0; child_ptregs = (struct pt_regs *) ((unsigned long) p + IA64_STK_OFFSET) - 1; diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c index c37e9a9..765d0f5 100644 --- a/arch/m32r/kernel/process.c +++ b/arch/m32r/kernel/process.c @@ -192,7 +192,7 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu) } int copy_thread(unsigned long clone_flags, unsigned long spu, - unsigned long arg, struct task_struct *tsk, struct pt_regs *unused) + unsigned long arg, struct task_struct *tsk) { struct pt_regs *childregs = task_pt_regs(tsk); extern void ret_from_fork(void); diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index aa9b110..9a3df4d 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -154,8 +154,7 @@ asmlinkage int m68k_clone(struct pt_regs *regs) } int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct * p, struct pt_regs * unused) + unsigned long arg, struct task_struct *p) { struct fork_frame { struct switch_stack sw; diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c index a5fed8d..40823fd 100644 --- a/arch/microblaze/kernel/process.c +++ b/arch/microblaze/kernel/process.c @@ -120,8 +120,7 @@ void flush_thread(void) } int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { struct pt_regs *childregs = task_pt_regs(p); struct thread_info *ti = task_thread_info(p); diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index d13720a..38097652 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -114,10 +114,10 @@ void flush_thread(void) } int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct thread_info *ti = task_thread_info(p); - struct pt_regs *childregs; + struct pt_regs *childregs, *regs = current_pt_regs(); unsigned long childksp; p->set_child_tid = p->clear_child_tid = NULL; diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c index 5e0ef39..eb09f5a 100644 --- a/arch/mn10300/kernel/process.c +++ b/arch/mn10300/kernel/process.c @@ -206,7 +206,7 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) */ int copy_thread(unsigned long clone_flags, unsigned long c_usp, unsigned long ustk_size, - struct task_struct *p, struct pt_regs *unused) + struct task_struct *p) { struct thread_info *ti = task_thread_info(p); struct pt_regs *c_regs; diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c index 6b85366..00c233b 100644 --- a/arch/openrisc/kernel/process.c +++ b/arch/openrisc/kernel/process.c @@ -142,7 +142,7 @@ extern asmlinkage void ret_from_fork(void); int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct pt_regs *userregs; struct pt_regs *kregs; diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index 9753ecf..d135072 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -204,10 +204,9 @@ int dump_task_fpu (struct task_struct *tsk, elf_fpregset_t *r) int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { - struct pt_regs * cregs = &(p->thread.regs); + struct pt_regs *cregs = &(p->thread.regs); void *stack = task_stack_page(p); /* We have to use void * instead of a function pointer, because diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index a314375..8143067 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -733,8 +733,7 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) extern unsigned long dscr_default; /* defined in arch/powerpc/kernel/sysfs.c */ int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, struct task_struct *p, - struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct pt_regs *childregs, *kregs; extern void ret_from_fork(void); @@ -759,6 +758,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, ti->flags |= _TIF_RESTOREALL; f = ret_from_kernel_thread; } else { + struct pt_regs *regs = current_pt_regs(); CHECK_FULL_REGS(regs); *childregs = *regs; if (usp) diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index e376777..536d645 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -117,8 +117,7 @@ void release_thread(struct task_struct *dead_task) } int copy_thread(unsigned long clone_flags, unsigned long new_stackp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { struct thread_info *ti; struct fake_frame diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c index f96379a..7956846 100644 --- a/arch/score/kernel/process.c +++ b/arch/score/kernel/process.c @@ -87,11 +87,11 @@ void flush_thread(void) {} * set up the kernel stack and exception frames for a new process */ int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct thread_info *ti = task_thread_info(p); struct pt_regs *childregs = task_pt_regs(p); + struct pt_regs *regs = current_pt_regs(); p->thread.reg0 = (unsigned long) childregs; if (unlikely(p->flags & PF_KTHREAD)) { diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c index 1786d16..73eb66f 100644 --- a/arch/sh/kernel/process_32.c +++ b/arch/sh/kernel/process_32.c @@ -128,8 +128,7 @@ asmlinkage void ret_from_fork(void); asmlinkage void ret_from_kernel_thread(void); int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { struct thread_info *ti = task_thread_info(p); struct pt_regs *childregs; diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c index d5c86a8..e611c85 100644 --- a/arch/sh/kernel/process_64.c +++ b/arch/sh/kernel/process_64.c @@ -371,10 +371,9 @@ asmlinkage void ret_from_fork(void); asmlinkage void ret_from_kernel_thread(void); int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, - struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { - struct pt_regs *childregs; + struct pt_regs *childregs, *regs = current_pt_regs(); #ifdef CONFIG_SH_FPU /* can't happen for a kernel thread */ diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index bf4c6ad..ecde946 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -319,11 +319,10 @@ extern void ret_from_fork(void); extern void ret_from_kernel_thread(void); int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long arg, - struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct thread_info *ti = task_thread_info(p); - struct pt_regs *childregs; + struct pt_regs *childregs, *regs = current_pt_regs(); char *new_stack; #ifndef CONFIG_SMP diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index dff54f4..58ef19e 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -622,10 +622,10 @@ asmlinkage long sparc_do_fork(unsigned long clone_flags, * Child --> %o0 == parents pid, %o1 == 1 */ int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long arg, - struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct thread_info *t = task_thread_info(p); + struct pt_regs *regs = current_pt_regs(); struct sparc_stackf *parent_sf; unsigned long child_stack_sz; char *child_trap_frame; diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c index 267936b..0e5661e 100644 --- a/arch/tile/kernel/process.c +++ b/arch/tile/kernel/process.c @@ -157,10 +157,9 @@ void arch_release_thread_info(struct thread_info *info) static void save_arch_state(struct thread_struct *t); int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { - struct pt_regs *childregs = task_pt_regs(p); + struct pt_regs *childregs = task_pt_regs(p), *regs = current_pt_regs(); unsigned long ksp; unsigned long *callee_regs; diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index c502c80..b462b13 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -161,8 +161,7 @@ void fork_handler(void) } int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long arg, struct task_struct * p, - struct pt_regs *regs) + unsigned long arg, struct task_struct * p) { void (*handler)(void); int kthread = current->flags & PF_KTHREAD; diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c index 79e44e8..62bad9f 100644 --- a/arch/unicore32/kernel/process.c +++ b/arch/unicore32/kernel/process.c @@ -262,7 +262,7 @@ asmlinkage void ret_from_kernel_thread(void) __asm__("ret_from_kernel_thread"); int copy_thread(unsigned long clone_flags, unsigned long stack_start, - unsigned long stk_sz, struct task_struct *p, struct pt_regs *unused) + unsigned long stk_sz, struct task_struct *p) { struct thread_info *thread = task_thread_info(p); struct pt_regs *childregs = task_pt_regs(p); diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index 16efa97..b5a8905 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -128,8 +128,7 @@ void release_thread(struct task_struct *dead_task) } int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long arg, struct task_struct *p) { struct pt_regs *childregs = task_pt_regs(p); struct task_struct *tsk; diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 74aac76..6e68a61 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -146,8 +146,7 @@ static inline u32 read_32bit_tls(struct task_struct *t, int tls) } int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long arg, - struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { int err; struct pt_regs *childregs; diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index 0036c14..1accf28 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -199,8 +199,7 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) */ int copy_thread(unsigned long clone_flags, unsigned long usp_thread_fn, - unsigned long thread_fn_arg, - struct task_struct *p, struct pt_regs *unused) + unsigned long thread_fn_arg, struct task_struct *p) { struct pt_regs *childregs = task_pt_regs(p); diff --git a/include/linux/sched.h b/include/linux/sched.h index c572497..78a2ae3 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2271,7 +2271,7 @@ extern void mm_release(struct task_struct *, struct mm_struct *); extern struct mm_struct *dup_mm(struct task_struct *tsk); extern int copy_thread(unsigned long, unsigned long, unsigned long, - struct task_struct *, struct pt_regs *); + struct task_struct *); extern void flush_thread(void); extern void exit_thread(void); diff --git a/kernel/fork.c b/kernel/fork.c index 27a3375..d96a562 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1320,7 +1320,7 @@ static struct task_struct *copy_process(unsigned long clone_flags, retval = copy_io(clone_flags, p); if (retval) goto bad_fork_cleanup_namespaces; - retval = copy_thread(clone_flags, stack_start, stack_size, p, regs); + retval = copy_thread(clone_flags, stack_start, stack_size, p); if (retval) goto bad_fork_cleanup_io; |