8c007bfdf1
PowerPC is currently using asm-generic/hardirq.h which statically allocates an NR_CPUS irq_stat array. Switch to an arch specific implementation which uses per cpu data: On a kernel with NR_CPUS=1024, this saves quite a lot of memory: text data bss dec hex filename 8767938 2944132 1636796 13348866 cbb002 vmlinux.baseline 8767779 2944260 1505724 13217763 c9afe3 vmlinux.irq_cpustat A saving of around 128kB. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
22 lines
516 B
C
22 lines
516 B
C
#ifndef _ASM_POWERPC_HARDIRQ_H
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#define _ASM_POWERPC_HARDIRQ_H
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#include <linux/threads.h>
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#include <linux/irq.h>
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typedef struct {
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unsigned int __softirq_pending;
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} ____cacheline_aligned irq_cpustat_t;
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DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
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#define __ARCH_IRQ_STAT
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#define local_softirq_pending() __get_cpu_var(irq_stat).__softirq_pending
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static inline void ack_bad_irq(unsigned int irq)
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{
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printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq);
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}
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#endif /* _ASM_POWERPC_HARDIRQ_H */
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