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firmware_map: make firmware_map_add_early() argument consistent with firmware_map_add_hotplug()

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There are two ways to create /sys/firmware/memmap/X sysfs:

  - firmware_map_add_early
    When the system starts, it is calledd from e820_reserve_resources()
  - firmware_map_add_hotplug
    When the memory is hot plugged, it is called from add_memory()

But these functions are called without unifying value of end argument as
below:

  - end argument of firmware_map_add_early()   : start + size - 1
  - end argument of firmware_map_add_hogplug() : start + size

The patch unifies them to "start + size".  Even if applying the patch,
/sys/firmware/memmap/X/end file content does not change.

[[email protected]: clarify comments]
Signed-off-by: Yasuaki Ishimatsu <[email protected]>
Reviewed-by: Dave Hansen <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Yasuaki Ishimatsu 2012-07-30 14:41:13 -07:00 • committed by Linus Torvalds
commit 4ed940d4c3
2 changed files with 5 additions and 5 deletions
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8
drivers/firmware/memmap.c
View file

@ -98,7 +98,7 @@ static LIST_HEAD(map_entries);
/**
* firmware_map_add_entry() - Does the real work to add a firmware memmap entry.
* @start: Start of the memory range.
* @end: End of the memory range (inclusive).
* @end: End of the memory range (exclusive).
* @type: Type of the memory range.
* @entry: Pre-allocated (either kmalloc() or bootmem allocator), uninitialised
* entry.
@ -113,7 +113,7 @@ static int firmware_map_add_entry(u64 start, u64 end,
BUG_ON(start > end);
entry->start = start;
entry->end = end;
entry->end = end - 1;
entry->type = type;
INIT_LIST_HEAD(&entry->list);
kobject_init(&entry->kobj, &memmap_ktype);
@ -148,7 +148,7 @@ static int add_sysfs_fw_map_entry(struct firmware_map_entry *entry)
* firmware_map_add_hotplug() - Adds a firmware mapping entry when we do
* memory hotplug.
* @start: Start of the memory range.
* @end: End of the memory range (inclusive).
* @end: End of the memory range (exclusive)
* @type: Type of the memory range.
*
* Adds a firmware mapping entry. This function is for memory hotplug, it is
@ -175,7 +175,7 @@ int __meminit firmware_map_add_hotplug(u64 start, u64 end, const char *type)
/**
* firmware_map_add_early() - Adds a firmware mapping entry.
* @start: Start of the memory range.
* @end: End of the memory range (inclusive).
* @end: End of the memory range.
* @type: Type of the memory range.
*
* Adds a firmware mapping entry. This function uses the bootmem allocator