powerpc/powernv: Set memory_block_size_bytes to 256MB
powerpc sets a low SECTION_SIZE_BITS to accomodate small pseries boxes. We default to 16MB memory blocks, and boxes with a lot of memory end up with enormous numbers of sysfs memory nodes. Set a more reasonable default for powernv of 256MB. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -244,6 +244,13 @@ static void pnv_kexec_cpu_down(int crash_shutdown, int secondary)
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}
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#endif /* CONFIG_KEXEC */
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#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
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static unsigned long pnv_memory_block_size(void)
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{
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return 256UL * 1024 * 1024;
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}
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#endif
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static void __init pnv_setup_machdep_opal(void)
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{
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ppc_md.get_boot_time = opal_get_boot_time;
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@ -326,4 +333,7 @@ define_machine(powernv) {
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#ifdef CONFIG_KEXEC
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.kexec_cpu_down = pnv_kexec_cpu_down,
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#endif
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#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
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.memory_block_size = pnv_memory_block_size,
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#endif
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};
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