1. 23 5月, 2008 1 次提交
  2. 22 5月, 2008 1 次提交
  3. 29 4月, 2008 1 次提交
  4. 29 3月, 2008 1 次提交
  5. 13 1月, 2008 1 次提交
  6. 11 10月, 2007 3 次提交
  7. 09 5月, 2007 1 次提交
  8. 28 4月, 2007 1 次提交
  9. 26 4月, 2007 1 次提交
  10. 07 10月, 2006 1 次提交
  11. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      David Howells 提交于
      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: NDavid Howells <dhowells@redhat.com>
      (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  12. 27 9月, 2006 1 次提交
    • M
      [PATCH] EISA bus MODALIAS attributes support · 07563c71
      Michael Tokarev 提交于
      Add modalias attribute support for the almost forgotten now EISA bus and
      (at least some) EISA-aware modules.
      
      The modalias entry looks like (for an 3c509 NIC):
      
       eisa:sTCM5093
      
      and the in-module alias like:
      
       eisa:sTCM5093*
      
      The patch moves struct eisa_device_id declaration from include/linux/eisa.h
      to include/linux/mod_devicetable.h (so that the former now #includes the
      latter), adds proper MODULE_DEVICE_TABLE(eisa, ...) statements for all
      drivers with EISA IDs I found (some drivers already have that DEVICE_TABLE
      declared), and adds recognision of __mod_eisa_device_table to
      scripts/mod/file2alias.c so that proper modules.alias will be generated.
      
      There's no support for /lib/modules/$kver/modules.eisamap, as it's not used
      by any existing tools, and because with in-kernel modalias mechanism those
      maps are obsolete anyway.
      
      The rationale for this patch is:
      
       a) to make EISA bus to act as other busses with modalias
          support, to unify driver loading
      
       b) to foget about EISA finally - with this patch, kernel
          (who still supports EISA) will be the only one who knows
          how to choose the necessary drivers for this bus ;)
      
      [akpm@osdl.org: fix the kbuild bit]
      Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Randy Dunlap <rdunlap@xenotime.net>
      Acked-the-net-bits-by: NJeff Garzik <jeff@garzik.org>
      Acked-the-tulip-bit-by: NValerie Henson <val_henson@linux.intel.com>
      Cc: James Bottomley <James.Bottomley@steeleye.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      07563c71
  13. 19 9月, 2006 1 次提交
  14. 14 9月, 2006 2 次提交
  15. 01 7月, 2006 1 次提交
  16. 12 3月, 2006 2 次提交
  17. 14 11月, 2005 1 次提交
  18. 27 6月, 2005 1 次提交
  19. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      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