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Commit 6d97d7a2 authored by Anton Blanchard's avatar Anton Blanchard Committed by Benjamin Herrenschmidt
Browse files

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: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent a5d86257

arch/powerpc/platforms/powernv/setup.c

+10 −0
Original line number Diff line number Diff line
@@ -244,6 +244,13 @@ static void pnv_kexec_cpu_down(int crash_shutdown, int secondary) 
}

#endif /* CONFIG_KEXEC */



#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE

static unsigned long pnv_memory_block_size(void)

{

	return 256UL * 1024 * 1024;

}

#endif



static void __init pnv_setup_machdep_opal(void)

{

	ppc_md.get_boot_time = opal_get_boot_time;
@@ -326,4 +333,7 @@ define_machine(powernv) { 
#ifdef CONFIG_KEXEC

	.kexec_cpu_down		= pnv_kexec_cpu_down,

#endif

#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE

	.memory_block_size	= pnv_memory_block_size,

#endif

};