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Commit 9f4b0ba8 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

[S390] Get rid of HOLES_IN_ZONE requirement. 



Align everything to MAX_ORDER so we can get rid of the extra checks.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 5c699714

arch/s390/Kconfig

+0 −3
Original line number Diff line number Diff line
@@ -276,9 +276,6 @@ source "kernel/Kconfig.preempt" 


source "mm/Kconfig"



config HOLES_IN_ZONE

	def_bool y



comment "I/O subsystem configuration"



config MACHCHK_WARNING

arch/s390/kernel/setup.c

+24 −1
Original line number Diff line number Diff line
@@ -559,7 +559,9 @@ setup_resources(void) 
	data_resource.start = (unsigned long) &_etext;

	data_resource.end = (unsigned long) &_edata - 1;



	for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {

	for (i = 0; i < MEMORY_CHUNKS; i++) {

		if (!memory_chunk[i].size)

			continue;

		res = alloc_bootmem_low(sizeof(struct resource));

		res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;

		switch (memory_chunk[i].type) {
@@ -630,6 +632,27 @@ static void __init setup_memory_end(void) 
	max_mem = memory_end ? min(VMALLOC_START, memory_end) : VMALLOC_START;

	memory_end = min(max_mem, memory_end);



	/*

	 * Make sure all chunks are MAX_ORDER aligned so we don't need the

	 * extra checks that HOLES_IN_ZONE would require.

	 */

	for (i = 0; i < MEMORY_CHUNKS; i++) {

		unsigned long start, end;

		struct mem_chunk *chunk;

		unsigned long align;



		chunk = &memory_chunk[i];

		align = 1UL << (MAX_ORDER + PAGE_SHIFT - 1);

		start = (chunk->addr + align - 1) & ~(align - 1);

		end = (chunk->addr + chunk->size) & ~(align - 1);

		if (start >= end)

			memset(chunk, 0, sizeof(*chunk));

		else {

			chunk->addr = start;

			chunk->size = end - start;

		}

	}



	for (i = 0; i < MEMORY_CHUNKS; i++) {

		struct mem_chunk *chunk = &memory_chunk[i];

arch/s390/mm/vmem.c

+1 −1
Original line number Diff line number Diff line
@@ -376,7 +376,7 @@ static int __init vmem_convert_memory_chunk(void) 
	int i;



	mutex_lock(&vmem_mutex);

	for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {

	for (i = 0; i < MEMORY_CHUNKS; i++) {

		if (!memory_chunk[i].size)

			continue;

		seg = kzalloc(sizeof(*seg), GFP_KERNEL);