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  1. 29 3月, 2008 1 次提交
  3. 17 3月, 2008 1 次提交
  5. 06 3月, 2008 1 次提交
  7. 13 11月, 2007 1 次提交
  9. 11 10月, 2007 3 次提交
  11. 25 5月, 2007 1 次提交
  13. 26 4月, 2007 4 次提交
  15. 18 2月, 2007 1 次提交
    • J
      bugfixes and new hardware support for arcnet driver · 52edc17f
      由 Jeff Morrow 提交于 
      The modifications and bug fixes noted below were done by Realtime Control
Works and Contemporary Control Systems, Inc, Jan 2005.  They were
incorporated into the 2.6 kernel by Jeff Morrow of Sierra Analytics, Feb
2007.  <jmorrow@massspec.com>

The changes have been tested on a Contemporary Controls PCI20U-4000.

Summary of changes:

Arc-rawmode.c:
      rx():
      - Fixed error in received packet lengths; 256 byte packets were
        being received as 257 bytes packets.

      prepare_tx():
      - Fixed error in transmit length calcs; 257 byte packets were being
        transmitted as 260 byte packets.

com20020.c:
      com20020_check():
      - We now load the SETUP2 register if the 'clockm' parameter is
        non-zero, instead of checking for ARC_CAN_10MBIT. The user is
        now responsible for whether or not SETUP2 is loaded.  If the
        clock multiplier is non-zero, this means that the user wants a
        baud rate greater than 2.5Mbps. This is not possible unless the
        SETUP2 register is present (COM20020D, or COM20022). So, we're
        relying on the user to be smart about what kind of chip he's
        dealing with...

com20020-pci.c
      - Added several entries to com20020pci_id_table[].
Signed-off-by: NJeff Morrow <jmorrow@massspec.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      52edc17f
  17. 13 2月, 2007 1 次提交
  19. 11 11月, 2006 1 次提交
  21. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      由 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
  23. 23 9月, 2006 1 次提交
  25. 20 8月, 2006 1 次提交
  27. 03 7月, 2006 1 次提交
  29. 01 7月, 2006 1 次提交
  31. 02 4月, 2006 1 次提交
  33. 01 4月, 2006 1 次提交
  35. 17 2月, 2006 1 次提交
  37. 29 1月, 2006 1 次提交
  39. 17 1月, 2006 2 次提交
  41. 13 9月, 2005 1 次提交
  43. 07 9月, 2005 1 次提交
  45. 06 5月, 2005 1 次提交
  47. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      由 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
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