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Commit f6d70f4c authored by Vinayak Menon's avatar Vinayak Menon
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Revert "mm/memblock: disable local irqs while late memblock changes" 



This reverts commit a87081cf.
The reverted patch is part of the unused no-map-fixup feature which is
being removed.

Change-Id: I95c78f62e4c73a9a79a85afa30796c28d946b465
Signed-off-by: default avatarVinayak Menon <vinmenon@codeaurora.org>
parent 14943829

drivers/base/dma-removed.c

+2 −3
Original line number Diff line number Diff line
@@ -181,16 +181,15 @@ static void removed_region_fixup(struct removed_region *dma_mem, int index) 
{

	unsigned long fixup_size;

	unsigned long base_pfn;

	unsigned long flags;



	if (index > dma_mem->nr_pages)

		return;



	/* carve-out */

	flags = memblock_region_resize_late_begin();

	memblock_region_resize_late_begin();

	memblock_free(dma_mem->base, dma_mem->nr_pages * PAGE_SIZE);

	memblock_remove(dma_mem->base, index * PAGE_SIZE);

	memblock_region_resize_late_end(flags);

	memblock_region_resize_late_end();



	/* clear page-mappings */

	base_pfn = dma_mem->base >> PAGE_SHIFT;

include/linux/memblock.h

+2 −2
Original line number Diff line number Diff line
@@ -90,8 +90,8 @@ int memblock_mark_mirror(phys_addr_t base, phys_addr_t size); 
int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);

int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);

ulong choose_memblock_flags(void);

unsigned long memblock_region_resize_late_begin(void);

void memblock_region_resize_late_end(unsigned long flags);

void memblock_region_resize_late_begin(void);

void memblock_region_resize_late_end(void);



/* Low level functions */

int memblock_add_range(struct memblock_type *type,

mm/memblock.c

+5 −11
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ 
#include <linux/memblock.h>

#include <linux/preempt.h>

#include <linux/seqlock.h>

#include <linux/irqflags.h>



#include <asm/sections.h>

#include <linux/io.h>
@@ -1773,35 +1772,30 @@ void __init memblock_allow_resize(void) 
	memblock_can_resize = 1;

}



static unsigned long __init_memblock

memblock_resize_late(int begin, unsigned long flags)

static void __init_memblock memblock_resize_late(int begin)

{

	static int memblock_can_resize_old;



	if (begin) {

		preempt_disable();

		local_irq_save(flags);

		memblock_can_resize_old = memblock_can_resize;

		memblock_can_resize = 0;

		raw_write_seqcount_begin(&memblock_seq);

	} else {

		raw_write_seqcount_end(&memblock_seq);

		memblock_can_resize = memblock_can_resize_old;

		local_irq_restore(flags);

		preempt_enable();

	}



	return flags;

}



unsigned long __init_memblock memblock_region_resize_late_begin(void)

void __init_memblock memblock_region_resize_late_begin(void)

{

	return memblock_resize_late(1, 0);

	memblock_resize_late(1);

}



void __init_memblock memblock_region_resize_late_end(unsigned long flags)

void __init_memblock memblock_region_resize_late_end(void)

{

	memblock_resize_late(0, flags);

	memblock_resize_late(0);

}



static int __init early_memblock(char *p)