diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-21 16:43:13 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-11-28 22:47:24 -0500 |
| commit | 1ea2a0160588582cd8414a8026d5b54f1705dfa1 (patch) | |
| tree | 65c2b543d3e9045c9766ab957f4cfdb92340d0e0 /arch/mn10300 | |
| parent | 3416e8098aa4c0eea1b2e5c4efc68cf61a848864 (diff) | |
mn10300: switch to generic fork/vfork/clone
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/mn10300')
| -rw-r--r-- | arch/mn10300/include/asm/unistd.h | 3 | ||||
| -rw-r--r-- | arch/mn10300/kernel/process.c | 33 |
2 files changed, 8 insertions, 28 deletions
diff --git a/arch/mn10300/include/asm/unistd.h b/arch/mn10300/include/asm/unistd.h index 9711d51b0212..cabf8ba73b27 100644 --- a/arch/mn10300/include/asm/unistd.h +++ b/arch/mn10300/include/asm/unistd.h @@ -44,6 +44,9 @@ #define __ARCH_WANT_SYS_RT_SIGACTION #define __ARCH_WANT_SYS_RT_SIGSUSPEND #define __ARCH_WANT_SYS_EXECVE +#define __ARCH_WANT_SYS_FORK +#define __ARCH_WANT_SYS_VFORK +#define __ARCH_WANT_SYS_CLONE /* * "Conditional" syscalls diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c index d0c671b6d9ff..5e0ef396458d 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 *kregs) + struct task_struct *p, struct pt_regs *unused) { struct thread_info *ti = task_thread_info(p); struct pt_regs *c_regs; @@ -227,7 +227,7 @@ int copy_thread(unsigned long clone_flags, p->thread.wchan = p->thread.pc; p->thread.usp = c_usp; - if (unlikely(!kregs)) { + if (unlikely(p->flags & PF_KTHREAD)) { memset(c_regs, 0, sizeof(struct pt_regs)); c_regs->a0 = c_usp; /* function */ c_regs->d0 = ustk_size; /* argument */ @@ -236,8 +236,9 @@ int copy_thread(unsigned long clone_flags, p->thread.pc = (unsigned long) ret_from_kernel_thread; return 0; } - *c_regs = *kregs; - c_regs->sp = c_usp; + *c_regs = *current_pt_regs(); + if (c_usp) + c_regs->sp = c_usp; c_regs->epsw &= ~EPSW_FE; /* my FPU */ /* the new TLS pointer is passed in as arg #5 to sys_clone() */ @@ -249,30 +250,6 @@ int copy_thread(unsigned long clone_flags, return 0; } -/* - * clone a process - * - tlsptr is retrieved by copy_thread() from current_frame()->d3 - */ -asmlinkage long sys_clone(unsigned long clone_flags, unsigned long newsp, - int __user *parent_tidptr, int __user *child_tidptr, - int __user *tlsptr) -{ - return do_fork(clone_flags, newsp ?: current_frame()->sp, - current_frame(), 0, parent_tidptr, child_tidptr); -} - -asmlinkage long sys_fork(void) -{ - return do_fork(SIGCHLD, current_frame()->sp, - current_frame(), 0, NULL, NULL); -} - -asmlinkage long sys_vfork(void) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, current_frame()->sp, - current_frame(), 0, NULL, NULL); -} - unsigned long get_wchan(struct task_struct *p) { return p->thread.wchan; |