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  1. Dec 03, 2009
  2. Jul 05, 2009
  3. Apr 14, 2009
  4. Nov 13, 2008
    • Wang Chen's avatar
      netdevice: safe convert to netdev_priv() #part-1 · 454d7c9b
      Wang Chen authored
      
      We have some reasons to kill netdev->priv:
      1. netdev->priv is equal to netdev_priv().
      2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
         netdev_priv() is more flexible than netdev->priv.
      But we cann't kill netdev->priv, because so many drivers reference to it
      directly.
      
      This patch is a safe convert for netdev->priv to netdev_priv(netdev).
      Since all of the netdev->priv is only for read.
      But it is too big to be sent in one mail.
      I split it to 4 parts and make every part smaller than 100,000 bytes,
      which is max size allowed by vger.
      
      Signed-off-by: default avatarWang Chen <wangchen@cn.fujitsu.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      454d7c9b
  5. Nov 03, 2008
  6. Oct 27, 2008
  7. Jun 11, 2008
  8. Mar 17, 2008
  9. Mar 05, 2008
  10. Oct 13, 2007
  11. Oct 10, 2007
  12. Apr 25, 2007
  13. Dec 04, 2006
  14. Oct 05, 2006
    • David Howells's avatar
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      David Howells authored
      
      Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
      of passing regs around manually through all ~1800 interrupt handlers in the
      Linux kernel.
      
      The regs pointer is used in few places, but it potentially costs both stack
      space and code to pass it around.  On the FRV arch, removing the regs parameter
      from all the genirq function results in a 20% speed up of the IRQ exit path
      (ie: from leaving timer_interrupt() to leaving do_IRQ()).
      
      Where appropriate, an arch may override the generic storage facility and do
      something different with the variable.  On FRV, for instance, the address is
      maintained in GR28 at all times inside the kernel as part of general exception
      handling.
      
      Having looked over the code, it appears that the parameter may be handed down
      through up to twenty or so layers of functions.  Consider a USB character
      device attached to a USB hub, attached to a USB controller that posts its
      interrupts through a cascaded auxiliary interrupt controller.  A character
      device driver may want to pass regs to the sysrq handler through the input
      layer which adds another few layers of parameter passing.
      
      I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
      main part of the code on FRV and i386, though I can't test most of the drivers.
      I've also done partial conversion for powerpc and MIPS - these at least compile
      with minimal configurations.
      
      This will affect all archs.  Mostly the changes should be relatively easy.
      Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
      
      	struct pt_regs *old_regs = set_irq_regs(regs);
      
      And put the old one back at the end:
      
      	set_irq_regs(old_regs);
      
      Don't pass regs through to generic_handle_irq() or __do_IRQ().
      
      In timer_interrupt(), this sort of change will be necessary:
      
      	-	update_process_times(user_mode(regs));
      	-	profile_tick(CPU_PROFILING, regs);
      	+	update_process_times(user_mode(get_irq_regs()));
      	+	profile_tick(CPU_PROFILING);
      
      I'd like to move update_process_times()'s use of get_irq_regs() into itself,
      except that i386, alone of the archs, uses something other than user_mode().
      
      Some notes on the interrupt handling in the drivers:
      
       (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
           the input_dev struct.
      
       (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
           something different depending on whether it's been supplied with a regs
           pointer or not.
      
       (*) Various IRQ handler function pointers have been moved to type
           irq_handler_t.
      
      Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
      (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  15. Sep 13, 2006
  16. Sep 12, 2006
    • Andy Gospodarek's avatar
      [PATCH] Remove more unnecessary driver printk's · d5b20697
      Andy Gospodarek authored
      
      As I promised last week, here is the first pass at removing all
      unnecessary printk's that exist in network device drivers currently in
      promiscuous mode.  The duplicate messages are not needed so they have
      been removed.  Some of these drivers are quite old and might not need an
      update, but I did them all anyway.
      
      I am currently auditing the remaining conditional printk's and will send
      out a patch for those soon.
      
      Signed-off-by: default avatarAndy Gospodarek <andy@greyhouse.net>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      d5b20697
  17. Jun 23, 2006
    • Herbert Xu's avatar
      [NET]: Avoid allocating skb in skb_pad · 5b057c6b
      Herbert Xu authored
      
      First of all it is unnecessary to allocate a new skb in skb_pad since
      the existing one is not shared.  More importantly, our hard_start_xmit
      interface does not allow a new skb to be allocated since that breaks
      requeueing.
      
      This patch uses pskb_expand_head to expand the existing skb and linearize
      it if needed.  Actually, someone should sift through every instance of
      skb_pad on a non-linear skb as they do not fit the reasons why this was
      originally created.
      
      Incidentally, this fixes a minor bug when the skb is cloned (tcpdump,
      TCP, etc.).  As it is skb_pad will simply write over a cloned skb.  Because
      of the position of the write it is unlikely to cause problems but still
      it's best if we don't do it.
      
      Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5b057c6b
  18. Mar 25, 2006
  19. Sep 06, 2005
  20. Apr 16, 2005
    • 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!
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