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| author | Mike Travis | 2009-01-11 07:24:06 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2009-01-11 19:13:35 +0100 |
| commit | 0fa0ebbf15addc1be8f73325d809c8547a9de304 (patch) | |
| tree | cd995419a3eb84d3e18e92ff205af86a7a4ed66d /include/linux/irqnr.h | |
| parent | irq: use WARN() instead of WARN_ON(). (diff) | |
| download | kernel-qcow2-linux-0fa0ebbf15addc1be8f73325d809c8547a9de304.tar.gz kernel-qcow2-linux-0fa0ebbf15addc1be8f73325d809c8547a9de304.tar.xz kernel-qcow2-linux-0fa0ebbf15addc1be8f73325d809c8547a9de304.zip | |
irq: allocate irq_desc_ptrs array based on nr_irqs
Impact: allocate irq_desc_ptrs in preparation for making it variable-sized.
This addresses this memory usage bump when NR_CPUS bumped from 128 to 4096:
34816 +229376 264192 +658% irq_desc_ptrs(.data.read_mostly)
The patch is split into two parts, the first simply allocates the
irq_desc_ptrs array. Then next will deal with making it variable.
This is only when CONFIG_SPARSE_IRQS=y.
Signed-off-by: Mike Travis <travis@sgi.com>
Diffstat (limited to 'include/linux/irqnr.h')
0 files changed, 0 insertions, 0 deletions