Commit Graph

10 Commits

Author SHA1 Message Date
Linus Torvalds 54d46ea993 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro:
 "sigaltstack infrastructure + conversion for x86, alpha and um,
  COMPAT_SYSCALL_DEFINE infrastructure.

  Note that there are several conflicts between "unify
  SS_ONSTACK/SS_DISABLE definitions" and UAPI patches in mainline;
  resolution is trivial - just remove definitions of SS_ONSTACK and
  SS_DISABLED from arch/*/uapi/asm/signal.h; they are all identical and
  include/uapi/linux/signal.h contains the unified variant."

Fixed up conflicts as per Al.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  alpha: switch to generic sigaltstack
  new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those
  generic compat_sys_sigaltstack()
  introduce generic sys_sigaltstack(), switch x86 and um to it
  new helper: compat_user_stack_pointer()
  new helper: restore_altstack()
  unify SS_ONSTACK/SS_DISABLE definitions
  new helper: current_user_stack_pointer()
  missing user_stack_pointer() instances
  Bury the conditionals from kernel_thread/kernel_execve series
  COMPAT_SYSCALL_DEFINE: infrastructure
2012-12-20 18:05:28 -08:00
Al Viro ae903caae2 Bury the conditionals from kernel_thread/kernel_execve series
All architectures have
	CONFIG_GENERIC_KERNEL_THREAD
	CONFIG_GENERIC_KERNEL_EXECVE
	__ARCH_WANT_SYS_EXECVE
None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers
of kernel_execve() (which is a trivial wrapper for do_execve() now) left.
Kill the conditionals and make both callers use do_execve().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-19 18:07:38 -05:00
Linus Torvalds 9977d9b379 Merge branch 'for-linus' of 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
2012-12-12 12:22:13 -08:00
Al Viro 951b39619a c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic clone()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28 23:43:39 -05:00
Mark Salter 93bbd0c087 c6x: use generic kvm_para.h
Signed-off-by: Mark Salter <msalter@redhat.com>
2012-11-28 14:33:03 -05:00
Mark Salter de0eed2813 c6x: remove internal kernel symbols from exported setup.h
Some internal kernel symbols were referenced in the exported setup.h.
This splits out the internal bits from the exported uapi bits.

Signed-off-by: Mark Salter <msalter@redhat.com>
2012-11-28 14:32:54 -05:00
Al Viro 5e7d733391 c6x: switch to saner kernel_execve() semantics
ACKed-by: Mark Salter <msalter@redhat.com>
Tested-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-15 12:51:17 -04:00
Linus Torvalds ff69497ad7 C6X UAPI Disintegration
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJQdiCsAAoJEOiN4VijXeFPxJYQAIgT53QnOUvZS6Jrb5mBBU4n
 H4cVOAvh41jQNPl+JkvUpwK8RW87IwFppOn+jjm8GtK43L5Hw7E6lnwRvFXyMmQY
 GrVnAnwWiugmbhkIUoaHBjSlB/gNibs0f+Xdcoa2JBBdKGzRWNOYKZhCGwLgMBer
 0pMtmzlHfO+ajDJIgStjP4uKhu4l/rscMN8SlElMDoAzDbRPNLZymXJ8RfmLrKrV
 ZDLFBCv/jA2Eol/fED2Q0RtBVK7bBgzaTgJQfEFRiNr9Vae/8ULtuCK7BLLgTVHc
 c+xKrE4Xapsom+9eJahLQsiF6U12kD6x4oswPYa2Cav6xVjcBIpaHG3ec5H1ZWzT
 cIfiHn2F6Cmxl4RjNM8RpwHHXLQjz1lWuKwPb/725h4mXn3BmWgH2DuPoLKh7dFu
 TwPclXAjD1AS/AU316z0jyBvBnaUH6AOO+58qq0+TACYCkDEUyoVQJPl0GM9sq0S
 W4SXdShYNmSSCO6nlxD/wckqlN9rgt1/JwJxkfJ2Ue+qH04Lj/FpaIsZwG+Z6r0f
 KrTJKFpqpeYr4yJwePy3i/xfHf19KYizW8VlGZqRPemIPGzSCZ8NGyGdDVn25lsU
 62zgwXOeNQNLKMF3XqvPX9LROVXl2XEBwri9mhtmGSyYyGmHyKjn5I7NaH3g6qzD
 OT/WJ8E+O05e22nQkPc8
 =AtNi
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

Pull C6X UAPI disintegration from Mark Salter:

 - scripted UAPI disintegration by David Howells.

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  UAPI: (Scripted) Disintegrate arch/c6x/include/asm
2012-10-13 11:19:00 +09:00
David Howells fbdd63d76c UAPI: (Scripted) Disintegrate arch/c6x/include/asm
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
2012-10-09 14:56:38 -04:00
David Howells 4413e16d9d UAPI: (Scripted) Set up UAPI Kbuild files
Set up empty UAPI Kbuild files to be populated by the header splitter.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
2012-10-02 18:01:35 +01:00