resend with gmail.
Clear the irq releated entries in irq_vector, irq_domain and vector_irq
instead of clearing irq_vector only. So when new irq is created, it
could reuse that vector. (actually is the second loop scanning from
FIRST_DEVICE_VECTOR+8). This could avoid the vectors are used up
with enough module inserting and removing
Cc: Eric W. Biedierman <[email protected]>
Signed-off-By: Yinghai Lu <[email protected]>
--- linux-2.6/arch/x86_64/kernel/io_apic.c 2006-10-24 13:40:48.000000000 -0700
+++ linux-2.6.xx/arch/x86_64/kernel/io_apic.c 2006-10-24 14:03:08.000000000 -0700
@@ -716,6 +716,22 @@
return vector;
}
+static void __clear_irq_vector(int irq)
+{
+ int old_vector = -1;
+ if (irq_vector[irq] > 0)
+ old_vector = irq_vector[irq];
+ if (old_vector >= 0) {
+ cpumask_t old_mask;
+ int old_cpu;
+ cpus_and(old_mask, irq_domain[irq], cpu_online_map);
+ for_each_cpu_mask(old_cpu, old_mask)
+ per_cpu(vector_irq, old_cpu)[old_vector] = -1;
+ }
+ irq_vector[irq] = 0;
+ irq_domain[irq] = CPU_MASK_NONE;
+}
+
void __setup_vector_irq(int cpu)
{
/* Initialize vector_irq on a new cpu */
@@ -1803,7 +1819,7 @@
dynamic_irq_cleanup(irq);
spin_lock_irqsave(&vector_lock, flags);
- irq_vector[irq] = 0;
+ __clear_irq_vector(irq);
spin_unlock_irqrestore(&vector_lock, flags);
}
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
