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Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse Source 
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.

The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]).  The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.

* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
  genirq: improve include files
  intr_remapping: fix typo
  io_apic: make irq_mis_count available on 64-bit too
  genirq: fix name space collisions of nr_irqs in arch/*
  genirq: fix name space collision of nr_irqs in autoprobe.c
  genirq: use iterators for irq_desc loops
  proc: fixup irq iterator
  genirq: add reverse iterator for irq_desc
  x86: move ack_bad_irq() to irq.c
  x86: unify show_interrupts() and proc helpers
  x86: cleanup show_interrupts
  genirq: cleanup the sparseirq modifications
  genirq: remove artifacts from sparseirq removal
  genirq: revert dynarray
  genirq: remove irq_to_desc_alloc
  genirq: remove sparse irq code
  genirq: use inline function for irq_to_desc
  genirq: consolidate nr_irqs and for_each_irq_desc()
  x86: remove sparse irq from Kconfig
  genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
  ...
This commit is contained in:
Linus Torvalds
2008-10-20 13:22:50 -07:00
parent 7110879cf2 dd3a1db900
commit 9301975ec2
111 changed files with 3732 additions and 6242 deletions
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36
drivers/char/random.c
View File

@@ -558,9 +558,26 @@ struct timer_rand_state {
unsigned dont_count_entropy:1;
};
static struct timer_rand_state input_timer_state;
static struct timer_rand_state *irq_timer_state[NR_IRQS];
static struct timer_rand_state *get_timer_rand_state(unsigned int irq)
{
if (irq >= nr_irqs)
return NULL;
return irq_timer_state[irq];
}
static void set_timer_rand_state(unsigned int irq, struct timer_rand_state *state)
{
if (irq >= nr_irqs)
return;
irq_timer_state[irq] = state;
}
static struct timer_rand_state input_timer_state;
/*
* This function adds entropy to the entropy "pool" by using timing
* delays. It uses the timer_rand_state structure to make an estimate
@@ -648,11 +665,15 @@ EXPORT_SYMBOL_GPL(add_input_randomness);
void add_interrupt_randomness(int irq)
{
if (irq >= NR_IRQS || irq_timer_state[irq] == NULL)
struct timer_rand_state *state;
state = get_timer_rand_state(irq);
if (state == NULL)
return;
DEBUG_ENT("irq event %d\n", irq);
add_timer_randomness(irq_timer_state[irq], 0x100 + irq);
add_timer_randomness(state, 0x100 + irq);
}
#ifdef CONFIG_BLOCK
@@ -912,7 +933,12 @@ void rand_initialize_irq(int irq)
{
struct timer_rand_state *state;
if (irq >= NR_IRQS || irq_timer_state[irq])
if (irq >= nr_irqs)
return;
state = get_timer_rand_state(irq);
if (state)
return;
/*
@@ -921,7 +947,7 @@ void rand_initialize_irq(int irq)
*/
state = kzalloc(sizeof(struct timer_rand_state), GFP_KERNEL);
if (state)
irq_timer_state[irq] = state;
set_timer_rand_state(irq, state);
}
#ifdef CONFIG_BLOCK