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Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, 32-bit: Align percpu area and irq stacks to THREAD_SIZE
  x86: Move alloc_desk_mask variables inside ifdef
  x86-32: Align IRQ stacks properly
  x86: Remove CONFIG_4KSTACKS
  x86: Always use irq stacks

Fixed up trivial conflicts in include/linux/{irq.h, percpu-defs.h}
This commit is contained in:
Linus Torvalds 2010-10-22 08:54:21 -07:00
commit 91151240ed
8 changed files with 25 additions and 40 deletions
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6
Documentation/x86/x86_64/kernel-stacks
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@ -18,9 +18,9 @@ specialized stacks contain no useful data. The main CPU stacks are:
Used for external hardware interrupts. If this is the first external
hardware interrupt (i.e. not a nested hardware interrupt) then the
kernel switches from the current task to the interrupt stack. Like
the split thread and interrupt stacks on i386 (with CONFIG_4KSTACKS),
this gives more room for kernel interrupt processing without having
to increase the size of every per thread stack.
the split thread and interrupt stacks on i386, this gives more room
for kernel interrupt processing without having to increase the size
of every per thread stack.
The interrupt stack is also used when processing a softirq.