Commit-ID: 44951a60ff888add9e84f509ffce20052e45af94
Gitweb: http://git.kernel.org/tip/44951a60ff888add9e84f509ffce20052e45af94
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Fri, 4 Feb 2011 17:33:49 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 8 Feb 2011 19:37:13 +0100
genirq: Remove dead code
CONFIG_KSTAT_IRQS_ONDEMAND does not exist. It's not worth to implement
it. Use sparse irqs if you care about memory consumption of the
interrupt layer.
Found by undertaker: http://vamos.informatik.uni-erlangen.de/trac/undertaker
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
kernel/irq/irqdesc.c | 17 -----------------
1 files changed, 0 insertions(+), 17 deletions(-)
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 282f202..a7ac6e1 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -251,7 +251,6 @@ int __init early_irq_init(void)
for (i = 0; i < count; i++) {
desc[i].irq_data.irq = i;
desc[i].irq_data.chip = &no_irq_chip;
- /* TODO : do this allocation on-demand ... */
desc[i].kstat_irqs = alloc_percpu(unsigned int);
alloc_masks(desc + i, GFP_KERNEL, node);
desc_smp_init(desc + i, node);
@@ -277,22 +276,6 @@ static void free_desc(unsigned int irq)
static inline int alloc_descs(unsigned int start, unsigned int cnt, int node)
{
-#if defined(CONFIG_KSTAT_IRQS_ONDEMAND)
- struct irq_desc *desc;
- unsigned int i;
-
- for (i = 0; i < cnt; i++) {
- desc = irq_to_desc(start + i);
- if (desc && !desc->kstat_irqs) {
- unsigned int __percpu *stats = alloc_percpu(unsigned int);
-
- if (!stats)
- return -1;
- if (cmpxchg(&desc->kstat_irqs, NULL, stats) != NULL)
- free_percpu(stats);
- }
- }
-#endif
return start;
}
#endif /* !CONFIG_SPARSE_IRQ */
--
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