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| author | Mike Travis <travis@sgi.com> | 2009-01-10 22:24:07 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-11 19:13:38 +0100 |
| commit | 9332fccdedf8e09448f3b69b624211ae879f6c45 (patch) | |
| tree | 81f74838f7c5388dc83a3cfd8009a22e223b4888 /kernel | |
| parent | 0fa0ebbf15addc1be8f73325d809c8547a9de304 (diff) | |
| download | linux-stable-9332fccdedf8e09448f3b69b624211ae879f6c45.tar.gz linux-stable-9332fccdedf8e09448f3b69b624211ae879f6c45.tar.bz2 linux-stable-9332fccdedf8e09448f3b69b624211ae879f6c45.zip | |
irq: initialize nr_irqs based on nr_cpu_ids
Impact: Reduce memory usage.
This is the second half of the changes to make the irq_desc_ptrs be
variable sized based on nr_cpu_ids. This is done by adding a new
"max_nr_irqs" macro to irq_vectors.h (and a dummy in irqnr.h) to
return a max NR_IRQS value based on NR_CPUS or nr_cpu_ids.
This necessitated moving the define of MAX_IO_APICS to a separate
file (asm/apicnum.h) so it could be included without the baggage
of the other asm/apicdef.h declarations.
Signed-off-by: Mike Travis <travis@sgi.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/handle.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index d0b8f7e72790..ebba7a116f14 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -133,6 +133,9 @@ int __init early_irq_init(void) int legacy_count; int i; + /* initialize nr_irqs based on nr_cpu_ids */ + nr_irqs = max_nr_irqs(nr_cpu_ids); + printk(KERN_INFO "NR_IRQS:%d nr_irqs:%d\n", NR_IRQS, nr_irqs); desc = irq_desc_legacy; |