1. 20 Jan, 2016 1 commit
  2. 30 Apr, 2013 1 commit
  3. 19 Jan, 2013 1 commit
  4. 18 Jan, 2013 1 commit
    • Tejun Heo's avatar
      init, block: try to load default elevator module early during boot · bb813f4c
      Tejun Heo authored
      This patch adds default module loading and uses it to load the default
      block elevator.  During boot, it's called right after initramfs or
      initrd is made available and right before control is passed to
      userland.  This ensures that as long as the modules are available in
      the usual places in initramfs, initrd or the root filesystem, the
      default modules are loaded as soon as possible.
      
      This will replace the on-demand elevator module loading from elevator
      init path.
      
      v2: Fixed build breakage when !CONFIG_BLOCK.  Reported by kbuild test
          robot.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Arjan van de Ven <arjan@linux.intel.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Alex Riesen <raa.lkml@gmail.com>
      Cc: Fengguang We <fengguang.wu@intel.com>
      bb813f4c
  5. 11 Oct, 2012 1 commit
  6. 31 May, 2012 1 commit
  7. 31 Mar, 2012 1 commit
  8. 17 Aug, 2010 1 commit
    • David Howells's avatar
      Make do_execve() take a const filename pointer · d7627467
      David Howells authored
      Make do_execve() take a const filename pointer so that kernel_execve() compiles
      correctly on ARM:
      
      arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type
      
      This also requires the argv and envp arguments to be consted twice, once for
      the pointer array and once for the strings the array points to.  This is
      because do_execve() passes a pointer to the filename (now const) to
      copy_strings_kernel().  A simpler alternative would be to cast the filename
      pointer in do_execve() when it's passed to copy_strings_kernel().
      
      do_execve() may not change any of the strings it is passed as part of the argv
      or envp lists as they are some of them in .rodata, so marking these strings as
      const should be fine.
      
      Further kernel_execve() and sys_execve() need to be changed to match.
      
      This has been test built on x86_64, frv, arm and mips.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Tested-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Acked-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d7627467
  9. 03 Mar, 2010 1 commit
    • Eric W. Biederman's avatar
      init: Open /dev/console from rootfs · 2bd3a997
      Eric W. Biederman authored
      To avoid potential problems with an empty /dev open /dev/console
      from rootfs instead of waiting to mount our root filesystem and
      mounting it there.   This effectively guarantees that there will
      be a device node, and it won't be on a filesystem that we will
      ever unmount, so there are no issues with leaving /dev/console
      open and pinning the filesystem.
      
      This is actually more effective than automatically mounting
      devtmpfs on /dev because it removes removes the occasionally
      problematic assumption that /dev/console exists from the boot
      code.
      
      With this patch I was able to throw busybox on my /boot partition
      (which has no /dev directory) and boot into userspace without
      problems.
      
      The only possible negative consequence I can think of is that
      someone out there deliberately used did not use a character device
      that is major 5 minor 2 for /dev/console.  Does anyone know of a
      situation in which that could make sense?
      Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      2bd3a997
  10. 20 Nov, 2007 1 commit
  11. 19 Sep, 2007 1 commit
  12. 17 Jul, 2007 1 commit
    • Rafael J. Wysocki's avatar
      Freezer: make kernel threads nonfreezable by default · 83144186
      Rafael J. Wysocki authored
      Currently, the freezer treats all tasks as freezable, except for the kernel
      threads that explicitly set the PF_NOFREEZE flag for themselves.  This
      approach is problematic, since it requires every kernel thread to either
      set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
      care for the freezing of tasks at all.
      
      It seems better to only require the kernel threads that want to or need to
      be frozen to use some freezer-related code and to remove any
      freezer-related code from the other (nonfreezable) kernel threads, which is
      done in this patch.
      
      The patch causes all kernel threads to be nonfreezable by default (ie.  to
      have PF_NOFREEZE set by default) and introduces the set_freezable()
      function that should be called by the freezable kernel threads in order to
      unset PF_NOFREEZE.  It also makes all of the currently freezable kernel
      threads call set_freezable(), so it shouldn't cause any (intentional)
      change of behaviour to appear.  Additionally, it updates documentation to
      describe the freezing of tasks more accurately.
      
      [akpm@linux-foundation.org: build fixes]
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      Acked-by: default avatarNigel Cunningham <nigel@nigel.suspend2.net>
      Cc: Pavel Machek <pavel@ucw.cz>
      Cc: Oleg Nesterov <oleg@tv-sign.ru>
      Cc: Gautham R Shenoy <ego@in.ibm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      83144186
  13. 07 May, 2007 1 commit
  14. 07 Dec, 2006 1 commit
  15. 02 Oct, 2006 1 commit
    • Arnd Bergmann's avatar
      [PATCH] introduce kernel_execve · 67608567
      Arnd Bergmann authored
      The use of execve() in the kernel is dubious, since it relies on the
      __KERNEL_SYSCALLS__ mechanism that stores the result in a global errno
      variable.  As a first step of getting rid of this, change all users to a
      global kernel_execve function that returns a proper error code.
      
      This function is a terrible hack, and a later patch removes it again after the
      kernel syscalls are gone.
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Cc: Andi Kleen <ak@muc.de>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Richard Henderson <rth@twiddle.net>
      Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Cc: Ian Molton <spyro@f2s.com>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Cc: Hirokazu Takata <takata.hirokazu@renesas.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Kyle McMartin <kyle@mcmartin.ca>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
      Cc: Richard Curnow <rc@rc0.org.uk>
      Cc: William Lee Irwin III <wli@holomorphy.com>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
      Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Roman Zippel <zippel@linux-m68k.org>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      67608567
  16. 26 Jun, 2006 1 commit
  17. 23 Mar, 2006 1 commit
    • Rafael J. Wysocki's avatar
      [PATCH] swsusp: userland interface · 6e1819d6
      Rafael J. Wysocki authored
      This patch introduces a user space interface for swsusp.
      
      The interface is based on a special character device, called the snapshot
      device, that allows user space processes to perform suspend and resume-related
      operations with the help of some ioctls and the read()/write() functions.
       Additionally it allows these processes to allocate free swap pages from a
      selected swap partition, called the resume partition, so that they know which
      sectors of the resume partition are available to them.
      
      The interface uses the same low-level system memory snapshot-handling
      functions that are used by the built-it swap-writing/reading code of swsusp.
      
      The interface documentation is included in the patch.
      
      The patch assumes that the major and minor numbers of the snapshot device will
      be 10 (ie.  misc device) and 231, the registration of which has already been
      requested.
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      Acked-by: default avatarPavel Machek <pavel@ucw.cz>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      6e1819d6
  18. 30 Jun, 2005 1 commit
    • Jay Lan's avatar
      [PATCH] Improper initrd failure message at boot time · f220ab2a
      Jay Lan authored
      On system boot up, there was an failure reported to boot.msg:
      
           <5>Trying to move old root to /initrd ... failed
      
      According to initrd(4) man page, step #7 of BOOT-UP OPERATION
      is described as below:
                7. If the normal root file has directory /initrd, device
                /dev/ram0 is moved from  /  to  /initrd.   Otherwise  if
                directory  /initrd  does  not  exist device /dev/ram0 is
                unmounted.
      
      We got service calls from customers concerning about this failure message
      at boot time.  Many systems do not have /initrd and thus the message can be
      changed in the case of non-existing /initrd so that it does not sound like
      a failure of the system.
      Signed-off-by: default avatarJay Lan <jlan@sgi.com>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      f220ab2a
  19. 25 Jun, 2005 1 commit
  20. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4