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authorMike Travis <travis@sgi.com>2009-01-10 21:58:08 -0800
committerIngo Molnar <mingo@elte.hu>2009-01-11 19:12:46 +0100
commit7f7ace0cda64c99599c23785f8979a072e118058 (patch)
tree13f2826e64e09ebaef94a3e7fd9c21cfbd31ec3f /kernel/irq/proc.c
parentc59765042f53a79a7a65585042ff463b69cb248c (diff)
cpumask: update irq_desc to use cpumask_var_t
Impact: reduce memory usage, use new cpumask API. Replace the affinity and pending_masks with cpumask_var_t's. This adds to the significant size reduction done with the SPARSE_IRQS changes. The added functions (init_alloc_desc_masks & init_copy_desc_masks) are in the include file so they can be inlined (and optimized out for the !CONFIG_CPUMASKS_OFFSTACK case.) [Naming chosen to be consistent with the other init*irq functions, as well as the backwards arg declaration of "from, to" instead of the more common "to, from" standard.] Includes a slight change to the declaration of struct irq_desc to embed the pending_mask within ifdef(CONFIG_SMP) to be consistent with other references, and some small changes to Xen. Tested: sparse/non-sparse/cpumask_offstack/non-cpumask_offstack/nonuma/nosmp on x86_64 Signed-off-by: Mike Travis <travis@sgi.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: virtualization@lists.osdl.org Cc: xen-devel@lists.xensource.com Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Diffstat (limited to 'kernel/irq/proc.c')
-rw-r--r--kernel/irq/proc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index aae3f742bce..692363dd591 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -20,11 +20,11 @@ static struct proc_dir_entry *root_irq_dir;
static int irq_affinity_proc_show(struct seq_file *m, void *v)
{
struct irq_desc *desc = irq_to_desc((long)m->private);
- const struct cpumask *mask = &desc->affinity;
+ const struct cpumask *mask = desc->affinity;
#ifdef CONFIG_GENERIC_PENDING_IRQ
if (desc->status & IRQ_MOVE_PENDING)
- mask = &desc->pending_mask;
+ mask = desc->pending_mask;
#endif
seq_cpumask(m, mask);
seq_putc(m, '\n');