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9977d9b379
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
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| .. | ||
| arm_generic.h | ||
| asm-offsets.h | ||
| assembler.h | ||
| atomic.h | ||
| barrier.h | ||
| bitops.h | ||
| cache.h | ||
| cacheflush.h | ||
| cachetype.h | ||
| cmpxchg.h | ||
| compat.h | ||
| compiler.h | ||
| cputable.h | ||
| cputype.h | ||
| debug-monitors.h | ||
| device.h | ||
| dma-mapping.h | ||
| elf.h | ||
| exception.h | ||
| exec.h | ||
| fb.h | ||
| fpsimd.h | ||
| fpsimdmacros.h | ||
| futex.h | ||
| hardirq.h | ||
| hw_breakpoint.h | ||
| hwcap.h | ||
| io.h | ||
| irq.h | ||
| irqflags.h | ||
| Kbuild | ||
| linkage.h | ||
| memblock.h | ||
| memory.h | ||
| mmu_context.h | ||
| mmu.h | ||
| module.h | ||
| page.h | ||
| perf_event.h | ||
| pgalloc.h | ||
| pgtable-2level-hwdef.h | ||
| pgtable-2level-types.h | ||
| pgtable-3level-hwdef.h | ||
| pgtable-3level-types.h | ||
| pgtable-hwdef.h | ||
| pgtable.h | ||
| pmu.h | ||
| proc-fns.h | ||
| processor.h | ||
| prom.h | ||
| ptrace.h | ||
| shmparam.h | ||
| sigcontext.h | ||
| signal32.h | ||
| smp.h | ||
| sparsemem.h | ||
| spinlock_types.h | ||
| spinlock.h | ||
| stacktrace.h | ||
| stat.h | ||
| syscall.h | ||
| syscalls.h | ||
| system_misc.h | ||
| thread_info.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| traps.h | ||
| uaccess.h | ||
| ucontext.h | ||
| unistd32.h | ||
| unistd.h | ||
| vdso_datapage.h | ||
| vdso.h | ||
| virt.h | ||