kstat: modify kstat_irqs_legacy to be variable sized

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Impact: reduce memory usage.

Allocate kstat_irqs_legacy based on nr_cpu_ids to deal with this
memory usage bump when NR_CPUS bumped from 128 to 4096:

     8192   +253952    262144 +3100%  kstat_irqs_legacy(.bss)

This is only when CONFIG_SPARSE_IRQS=y.

Signed-off-by: Mike Travis <travis@sgi.com>

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Mike Travis 2009-01-10 22:24:07 -08:00 • committed by Ingo Molnar

parent 9332fccded

commit 542d865bbe

1 changed files with 7 additions and 3 deletions

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kernel/irq/handle.c

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