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drivers/base/memory: Fix comments for phys_index_show()

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According to 'admin-guide/mm/memory-hotplug.rst', the memory block ID,
instead of the section index, is shown by '/sys/devices/system/memory/
memoryX/phys_index'.

Fix the comments to match with 'admin-guide/mm/memory-hotplug.rst'.
Besides, use the existing helper memory_block_id() to convert the section
index to the memory block index.

No functional change intended.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Link: https://lore.kernel.org/r/20230120055727.355483-2-gshan@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gavin Shan 2023-01-20 13:57:26 +08:00 • committed by Greg Kroah-Hartman
parent f7d85515bd
commit 7c09f4281c
1 changed files with 2 additions and 7 deletions
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9
drivers/base/memory.c
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@ -115,18 +115,13 @@ unsigned long __weak memory_block_size_bytes(void)
} }
EXPORT_SYMBOL_GPL(memory_block_size_bytes); EXPORT_SYMBOL_GPL(memory_block_size_bytes);
/* /* Show the memory block ID, relative to the memory block size */
* Show the first physical section index (number) of this memory block.
*/
static ssize_t phys_index_show(struct device *dev, static ssize_t phys_index_show(struct device *dev,
struct device_attribute *attr, char *buf) struct device_attribute *attr, char *buf)
{ {
struct memory_block *mem = to_memory_block(dev); struct memory_block *mem = to_memory_block(dev);
unsigned long phys_index;
phys_index = mem->start_section_nr / sections_per_block; return sysfs_emit(buf, "%08lx\n", memory_block_id(mem->start_section_nr));
return sysfs_emit(buf, "%08lx\n", phys_index);
} }
/* /*