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  1. Sep 01, 2009
  2. Nov 25, 2008
  3. Nov 21, 2008
  4. Jul 04, 2008
  5. May 12, 2008
  6. Jul 10, 2007
  7. Dec 01, 2006
    • Al Viro's avatar
      [PATCH] 8390 fixes - the final chunk (h8300) · 3470cb1d
      Al Viro authored
      
      The rest of 8390 conversions; ifdef cascade in 8390.h is gone now.
      
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      3470cb1d
    • Al Viro's avatar
      [PATCH] 8390 fixes - m68k oddballs · 8c6270f9
      Al Viro authored
      
      more 8390 conversions - mac8390, zorro8390 and hydra got the same treatment
      as arm etherh; one more case in 8390.h ifdef cascade is gone.
      
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      8c6270f9
    • Al Viro's avatar
      [PATCH] beginning of 8390 fixes - generic and arm/etherh · 6c3561b0
      Al Viro authored
      
      etherh and a handful of other odd drivers use different macros when building
      8390.c.  Since we generate a single 8390.o and then link with it, in any
      config with both oddball and normal 8390-based driver we will end up with
      breakage in at least one of them.  Solution: take most of 8390.c into
      lib8390.c and have 8390.c, etherh.c and the rest of oddballs #include it.
      Helper macros are taken from 8390.h to whoever includes lib8390.c.  That
      way odd drivers get separate instances of compiled 8390 stuff and stop
      stepping on each other's toes.  8390.h gets cleaned up - we don't have
      the cascade of ifdefs in there and are left with the stuff that can be
      used by any 8390-based driver.  Current problems are exactly because of
      that cascade - we attempt to choose the set of helpers by looking at config
      and that, of course, doesn't work well when we have several sets needed
      by various drivers in our config.
      
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      6c3561b0
  8. 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
  9. Sep 13, 2006
  10. Jun 30, 2006
  11. Mar 29, 2006
  12. 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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