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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

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Pull pile 2 of execve and kernel_thread unification work from Al Viro:
 "Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for
  several more architectures plus assorted signal fixes and cleanups.

  There'll be more (in particular, real fixes for the alpha
  do_notify_resume() irq mess)..."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits)
  alpha: don't open-code trace_report_syscall_{enter,exit}
  Uninclude linux/freezer.h
  m32r: trim masks
  avr32: trim masks
  tile: don't bother with SIGTRAP in setup_frame
  microblaze: don't bother with SIGTRAP in setup_rt_frame()
  mn10300: don't bother with SIGTRAP in setup_frame()
  frv: no need to raise SIGTRAP in setup_frame()
  x86: get rid of duplicate code in case of CONFIG_VM86
  unicore32: remove pointless test
  h8300: trim _TIF_WORK_MASK
  parisc: decide whether to go to slow path (tracesys) based on thread flags
  parisc: don't bother looping in do_signal()
  parisc: fix double restarts
  bury the rest of TIF_IRET
  sanitize tsk_is_polling()
  bury _TIF_RESTORE_SIGMASK
  unicore32: unobfuscate _TIF_WORK_MASK
  mips: NOTIFY_RESUME is not needed in TIF masks
  mips: merge the identical "return from syscall" per-ABI code
  ...

Conflicts:
	arch/arm/include/asm/thread_info.h
This commit is contained in:
Linus Torvalds
2012-10-12 10:49:08 +09:00
parent 40924754f2 12f79be93d
commit 8213a2f3ee
99 changed files with 351 additions and 889 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
arch/frv/kernel/process.c
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@@ -38,6 +38,7 @@
#include "local.h"
asmlinkage void ret_from_fork(void);
asmlinkage void ret_from_kernel_thread(void);
#include <asm/pgalloc.h>
@@ -172,32 +173,13 @@ asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
* set up the kernel stack and exception frames for a new process
*/
int copy_thread(unsigned long clone_flags,
unsigned long usp, unsigned long topstk,
unsigned long usp, unsigned long arg,
struct task_struct *p, struct pt_regs *regs)
{
struct pt_regs *childregs0, *childregs, *regs0;
struct pt_regs *childregs;
regs0 = __kernel_frame0_ptr;
childregs0 = (struct pt_regs *)
childregs = (struct pt_regs *)
(task_stack_page(p) + THREAD_SIZE - FRV_FRAME0_SIZE);
childregs = childregs0;
/* set up the userspace frame (the only place that the USP is stored) */
*childregs0 = *regs0;
childregs0->gr8 = 0;
childregs0->sp = usp;
childregs0->next_frame = NULL;
/* set up the return kernel frame if called from kernel_thread() */
if (regs != regs0) {
childregs--;
*childregs = *regs;
childregs->sp = (unsigned long) childregs0;
childregs->next_frame = childregs0;
childregs->gr15 = (unsigned long) task_thread_info(p);
childregs->gr29 = (unsigned long) p;
}
p->set_child_tid = p->clear_child_tid = NULL;
@@ -206,8 +188,25 @@ int copy_thread(unsigned long clone_flags,
p->thread.sp = (unsigned long) childregs;
p->thread.fp = 0;
p->thread.lr = 0;
p->thread.pc = (unsigned long) ret_from_fork;
p->thread.frame0 = childregs0;
p->thread.frame0 = childregs;
if (unlikely(!regs)) {
memset(childregs, 0, sizeof(struct pt_regs));
childregs->gr9 = usp; /* function */
childregs->gr8 = arg;
chilregs->psr = PSR_S;
p->thread.pc = (unsigned long) ret_from_kernel_thread;
save_user_regs(p->thread.user);
return 0;
}
/* set up the userspace frame (the only place that the USP is stored) */
*childregs = *regs;
childregs->sp = usp;
childregs->next_frame = NULL;
p->thread.pc = (unsigned long) ret_from_fork;
/* the new TLS pointer is passed in as arg #5 to sys_clone() */
if (clone_flags & CLONE_SETTLS)
@@ -218,25 +217,6 @@ int copy_thread(unsigned long clone_flags,
return 0;
} /* end copy_thread() */
/*
* sys_execve() executes a new program.
*/
asmlinkage int sys_execve(const char __user *name,
const char __user *const __user *argv,
const char __user *const __user *envp)
{
int error;
char * filename;
filename = getname(name);
error = PTR_ERR(filename);
if (IS_ERR(filename))
return error;
error = do_execve(filename, argv, envp, __frame);
putname(filename);
return error;
}
unsigned long get_wchan(struct task_struct *p)
{
struct pt_regs *regs0;