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proc: remove ifdef CONFIG_SPARSE_IRQ from stat.c 

Impact: cleanup

irq_desc can be NULL when CONFIG_SPARSE_IRQ=y only.
therefore, NULL checking can move into kstat_irqs_cpu() of SPARSE_IRQ version.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: "Yinghai Lu" <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
KOSAKI Motohiro 2008-12-26 14:24:10 +09:00 committed by Ingo Molnar
parent f9af0e7091
commit 26ddd8d5ca
2 changed files with 2 additions and 11 deletions
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11
fs/proc/stat.c
View File

@ -9,6 +9,7 @@
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/irqnr.h>
#include <asm/cputime.h>
#ifndef arch_irq_stat_cpu
@ -45,10 +46,6 @@ static int show_stat(struct seq_file *p, void *v)
steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
for_each_irq_nr(j) {
#ifdef CONFIG_SPARSE_IRQ
if (!irq_to_desc(j))
continue;
#endif
sum += kstat_irqs_cpu(j, i);
}
sum += arch_irq_stat_cpu(i);
@ -95,12 +92,6 @@ static int show_stat(struct seq_file *p, void *v)
/* sum again ? it could be updated? */
for_each_irq_nr(j) {
per_irq_sum = 0;
#ifdef CONFIG_SPARSE_IRQ
if (!irq_to_desc(j)) {
seq_printf(p, " %u", per_irq_sum);
continue;
}
#endif
for_each_possible_cpu(i)
per_irq_sum += kstat_irqs_cpu(j, i);

2
kernel/irq/handle.c
View File

@ -448,7 +448,7 @@ void early_init_irq_lock_class(void)
unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
{
struct irq_desc *desc = irq_to_desc(irq);
return desc->kstat_irqs[cpu];
return desc ? desc->kstat_irqs[cpu] : 0;
}
#endif
EXPORT_SYMBOL(kstat_irqs_cpu);