xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]

Browse Source 
add CONFIG_HAVE_SPARSE_IRQ to for use condensed array.
Get rid of irq_desc[] array assumptions.

Preallocate 32 irq_desc, and irq_desc() will try to get more.

( No change in functionality is expected anywhere, except the odd build
  failure where we missed a code site or where a crossing commit itroduces
  new irq_desc[] usage. )

v2: according to Eric, change get_irq_desc() to irq_desc()

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu
2008-08-19 20:50:05 -07:00
committed by Ingo Molnar
parent bfea1238be
commit 08678b0841
28 changed files with 405 additions and 188 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/xen/events.c
View File

@@ -125,7 +125,7 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
BUG_ON(irq == -1);
#ifdef CONFIG_SMP
irq_desc[irq].affinity = cpumask_of_cpu(cpu);
irq_to_desc(irq)->affinity = cpumask_of_cpu(cpu);
#endif
__clear_bit(chn, cpu_evtchn_mask[cpu_evtchn[chn]]);
@@ -139,8 +139,10 @@ static void init_evtchn_cpu_bindings(void)
#ifdef CONFIG_SMP
int i;
/* By default all event channels notify CPU#0. */
for (i = 0; i < nr_irqs; i++)
irq_desc[i].affinity = cpumask_of_cpu(0);
for (i = 0; i < nr_irqs; i++) {
struct irq_desc *desc = irq_to_desc(i);
desc->affinity = cpumask_of_cpu(0);
}
#endif
memset(cpu_evtchn, 0, sizeof(cpu_evtchn));