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* thp: change split_huge_page_pmd() interfaceKirill A. Shutemov2012-12-131-1/+1
| | | | | | | | | | | | | | | | | | Pass vma instead of mm and add address parameter. In most cases we already have vma on the stack. We provides split_huge_page_pmd_mm() for few cases when we have mm, but not vma. This change is preparation to huge zero pmd splitting implementation. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: "H. Peter Anvin" <hpa@linux.intel.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-12-12246-3912/+1226
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull big execve/kernel_thread/fork unification series from Al Viro: "All architectures are converted to new model. Quite a bit of that stuff is actually shared with architecture trees; in such cases it's literally shared branch pulled by both, not a cherry-pick. A lot of ugliness and black magic is gone (-3KLoC total in this one): - kernel_thread()/kernel_execve()/sys_execve() redesign. We don't do syscalls from kernel anymore for either kernel_thread() or kernel_execve(): kernel_thread() is essentially clone(2) with callback run before we return to userland, the callbacks either never return or do successful do_execve() before returning. kernel_execve() is a wrapper for do_execve() - it doesn't need to do transition to user mode anymore. As a result kernel_thread() and kernel_execve() are arch-independent now - they live in kernel/fork.c and fs/exec.c resp. sys_execve() is also in fs/exec.c and it's completely architecture-independent. - daemonize() is gone, along with its parts in fs/*.c - struct pt_regs * is no longer passed to do_fork/copy_process/ copy_thread/do_execve/search_binary_handler/->load_binary/do_coredump. - sys_fork()/sys_vfork()/sys_clone() unified; some architectures still need wrappers (ones with callee-saved registers not saved in pt_regs on syscall entry), but the main part of those suckers is in kernel/fork.c now." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (113 commits) do_coredump(): get rid of pt_regs argument print_fatal_signal(): get rid of pt_regs argument ptrace_signal(): get rid of unused arguments get rid of ptrace_signal_deliver() arguments new helper: signal_pt_regs() unify default ptrace_signal_deliver flagday: kill pt_regs argument of do_fork() death to idle_regs() don't pass regs to copy_process() flagday: don't pass regs to copy_thread() bfin: switch to generic vfork, get rid of pointless wrappers xtensa: switch to generic clone() openrisc: switch to use of generic fork and clone unicore32: switch to generic clone(2) score: switch to generic fork/vfork/clone c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic clone() take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.h mn10300: switch to generic fork/vfork/clone h8300: switch to generic fork/vfork/clone tile: switch to generic clone() ... Conflicts: arch/microblaze/include/asm/Kbuild
| * get rid of ptrace_signal_deliver() argumentsAl Viro2012-11-292-3/+3
| | | | | | | | | | | | | | the first one is equal to signal_pt_regs(), the second is never used (and always NULL, while we are at it). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * new helper: signal_pt_regs()Al Viro2012-11-292-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Always equal to task_pt_regs(current); defined only when we are in signal delivery. It may be different from current_pt_regs() - e.g. architectures like m68k may have pt_regs location on exception different from that on a syscall and signals (just as ptrace handling) may happen on exceptions as well as on syscalls. When they are equal, it's often better to have signal_pt_regs defined (in asm/ptrace.h) as current_pt_regs - that tends to be optimized better than default would be. However, optimisation is the only reason why we might want an arch-specific definition; if current_pt_regs() and task_pt_regs(current) have different values, the latter one is right. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * unify default ptrace_signal_deliverAl Viro2012-11-2916-40/+2
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * flagday: kill pt_regs argument of do_fork()Al Viro2012-11-297-17/+13
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * death to idle_regs()Al Viro2012-11-293-16/+0
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * flagday: don't pass regs to copy_thread()Al Viro2012-11-2932-58/+43
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * bfin: switch to generic vfork, get rid of pointless wrappersAl Viro2012-11-295-54/+7
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * xtensa: switch to generic clone()Al Viro2012-11-295-11/+3
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * openrisc: switch to use of generic fork and cloneAl Viro2012-11-296-66/+19
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * unicore32: switch to generic clone(2)Al Viro2012-11-294-25/+7
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * score: switch to generic fork/vfork/cloneAl Viro2012-11-296-58/+8
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic ↵Al Viro2012-11-294-36/+6
| | | | | | | | | | | | clone() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.hAl Viro2012-11-2910-51/+1
| | | | | | | | | | | | now it can be done... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * mn10300: switch to generic fork/vfork/cloneAl Viro2012-11-292-28/+8
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * h8300: switch to generic fork/vfork/cloneAl Viro2012-11-293-44/+6
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * tile: switch to generic clone()Al Viro2012-11-292-8/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * m68k: sanitize copy_thread(), fork/vfork/clone wrappers, switch to generic ↵Al Viro2012-11-294-71/+46
| | | | | | | | | | | | fork/vfork Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * alpha: switch to generic fork/vfork/cloneAl Viro2012-11-294-59/+17
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * s390: switch to generic fork/vfork/cloneAl Viro2012-11-293-42/+14
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * microblaze: switch to generic fork/vfork/cloneAl Viro2012-11-297-56/+12
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| * hexagon: switch to generic clone()Al Viro2012-11-294-52/+6
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * sh: switch to generic fork/vfork/cloneAl Viro2012-11-295-110/+11
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * parisc: switch to generic fork/vfork/cloneAl Viro2012-11-294-69/+22
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * m32r: switch to generic fork/vfork/cloneAl Viro2012-11-292-42/+7
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * cris: switch to generic fork/vfork/cloneAl Viro2012-11-294-60/+13
| | | | | | | | | | | | | | same braindamage as on s390 - the first two arguments of clone(2) in the wrong order. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * avr32: sanitize copy_thread(), switch to generic fork/vfork/clone, kill wrappersAl Viro2012-11-294-47/+11
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * arm64: sanitize copy_thread(), switch to generic fork/vfork/cloneAl Viro2012-11-297-28/+12
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * frv: switch to generic fork/vfork/cloneAl Viro2012-11-292-40/+8
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * powerpc: switch to generic fork/clone/vforkAl Viro2012-11-294-32/+4
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * arm: switch to generic fork/vfork/cloneAl Viro2012-11-296-55/+13
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * x86, um: switch to generic fork/vfork/cloneAl Viro2012-11-2916-117/+52
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * get rid of pt_regs argument of ->load_binary()Al Viro2012-11-292-3/+4
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * get rid of pt_regs argument of search_binary_handler()Al Viro2012-11-291-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * kill stray kernel_thread() garbageAl Viro2012-11-294-6/+0
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * consolidate sys_execve() prototypeAl Viro2012-11-294-11/+0
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| *-----------------. Merge branches 'no-rebases', 'arch-avr32', 'arch-blackfin', 'arch-cris', ↵Al Viro2012-11-29164-2779/+982
| |\ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'arch-h8300', 'arch-m32r', 'arch-mn10300', 'arch-score', 'arch-sh' and 'arch-powerpc' into for-next
| | | | | | | | | | | * powerpc: make fork_idle() take the common "kernel thread" path in copy_thread()Al Viro2012-10-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | | * powerpc: put the "zero usp means using parent's stack pointer" to copy_thread()Al Viro2012-10-221-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | simplifies callers, at that... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | | * powerpc: don't bother with CHECK_FULL_REGS in sys_fork() et.al.Al Viro2012-10-221-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | copy_thread() will do it anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | | * powerpc: don't bother with zero-extending arguments in sys_clone()Al Viro2012-10-221-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ... since the syscall glue had been doing that for 9 years already. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | | * powerpc: take dereferencing to ret_from_kernel_thread()Al Viro2012-10-222-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | | * powerpc: don't mess with r2 in copy_thread() and friendsAl Viro2012-10-152-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kernel_thread() callbacks are *not* in modules and are not going to be there. And it's not even read in ppc32 ret_from_kernel_thread(), so no need to bother with it there either. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | | * powerpc: switch to saner kernel_execve() semanticsAl Viro2012-10-155-22/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | * | sh: convert to generic sys_execve()Al Viro2012-10-235-56/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | | * | sh: switch to generic kernel_thread()/kernel_execve()Al Viro2012-10-2310-174/+71
| | | | | | | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | * | score: switch to generic sys_execve()Al Viro2012-10-154-30/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | | * | score: switch to generic kernel_thread()/kernel_execve()Al Viro2012-10-155-72/+23
| | | | | | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| | | | | | | | * / mn10300: switch to saner kernel_execve() semanticsAl Viro2012-10-153-7/+2
| | | | | | | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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