Skip to content

K
Kernel

openeuler / Kernel
1 年多 前同步成功

通知 8
Star 0
Fork 0
K
Kernel
切换分支/标签
  1. 04 2月, 2008 1 次提交
    • S
      scsi: fix dependency bug in aic7 Makefile · 8891fec6
      由 Sam Ravnborg 提交于 
      Building the aic7xxx driver includes the copy
of an .h file from a _shipped file.

In a highly parallel build Ingo saw that the
build sometimes failed (included distcc usage).
It was tracked down to a missing dependency from the .c
source file to the generated .h file.
We started to build the .c file before the
copy (cat) operation of the .h file completed
and we then only got half of the definitions
from the copied .h file.

Add an explicit dependency from the .c files to the
generated .h files so make knows all dependencies and
finsih the build of the .h files before it starts
building the .o files.

Ingo tested this fix and reported:
good news: hundreds of successful kernel builds and no failures
overnight.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Acked-by: NIngo Molnar <mingo@elte.hu>
Acked-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
      8891fec6
  3. 31 1月, 2008 5 次提交
  5. 25 1月, 2008 1 次提交
  7. 24 1月, 2008 1 次提交
  9. 22 10月, 2007 3 次提交
  11. 20 10月, 2007 1 次提交
  13. 16 10月, 2007 1 次提交
  15. 31 7月, 2007 1 次提交
  17. 27 7月, 2007 1 次提交
  19. 01 6月, 2007 1 次提交
  21. 27 5月, 2007 2 次提交
  23. 23 5月, 2007 1 次提交
    • J
      [SCSI] aic7xxx: fix aicasm build failure with gcc-3.4.6 · f45ffaec
      由 James Bottomley 提交于 
      On Tue, 2007-05-22 at 06:51 -0500, Bob Tracy wrote:
> Second try: originally reported this back on April 17th.  2.6.X
> kernel builds started failing after I upgraded my compiler from
> gcc-3.3.X to gcc-3.4.6:
>
> make -C drivers/scsi/aic7xxx/aicasm
> (...)
> gcc -I/usr/include -I. aicasm.c aicasm_symbol.c aicasm_gram.c aicasm_macro_gram.c aicasm_scan.c aicasm_macro_scan.c -o aicasm -ldb
> aicasm_gram.y:1948: error: conflicting types for 'yyerror'
> aicasm_gram.tab.c:3004: error: previous implicit declaration of 'yyerror' was here
> aicasm_macro_gram.y:162: error: conflicting types for 'mmerror'
> aicasm_macro_gram.tab.c:1196: error: previous implicit declaration of 'mmerror' was here

Fix is to add a prototype for yyerror and mmerror to the relevant files.
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      f45ffaec
  25. 09 5月, 2007 2 次提交
  27. 01 4月, 2007 2 次提交
  29. 17 2月, 2007 1 次提交
  31. 11 2月, 2007 1 次提交
    • H
      [SCSI] aic79xx: use dma_get_required_mask() · 19966769
      由 Hannes Reinecke 提交于 
      As originally noted by Frederic Temporelli, the aic79xx supports 64
bit addressing, but the initialization code of the driver is wrong: it
tests the available memory size instead of testing the maximum
available memory address.

This patch uses the correct dma_get_required_mask() macros to
determine the correct addressing method.
Signed-off-by: NHannes Reinecke <hare@suse.de>
Cc: Xavier Bru <xavier.bru@bull.net>
CC: Frederic Temporelli <frederic.temporelli@bull.net>

cosmetic fixes
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      19966769
  33. 08 2月, 2007 2 次提交
  35. 06 12月, 2006 1 次提交
  37. 26 10月, 2006 8 次提交
  39. 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
  41. 04 10月, 2006 1 次提交
  43. 02 10月, 2006 1 次提交
  45. 01 10月, 2006 1 次提交