Messages in this thread Patch in this message | | | Subject | [RFC PATCH] memory driver: make phys_index/end_phys_index reflect the start/end section number | From | Li Zhong <> | Date | Wed, 02 Apr 2014 16:56:58 +0800 |
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I noticed the phys_index and end_phys_index under /sys/devices/system/memory/memoryXXX/ have the same value, e.g. (for the test machine, one memory block has 8 sections, that is sections_per_block equals 8)
# cd /sys/devices/system/memory/memory100/ # cat phys_index end_phys_index 00000064 00000064
Seems they should reflect the start/end section number respectively, which also matches what is said in Documentation/memory-hotplug.txt
This patch tries to modify that so the two files could show the start/end section number of the memory block.
After this change, output of the above example looks like:
# cat phys_index end_phys_index 00000320 00000327
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com> --- drivers/base/memory.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index bece691..b10f2fa 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -114,7 +114,7 @@ static ssize_t show_mem_start_phys_index(struct device *dev, struct memory_block *mem = to_memory_block(dev); unsigned long phys_index; - phys_index = mem->start_section_nr / sections_per_block; + phys_index = mem->start_section_nr; return sprintf(buf, "%08lx\n", phys_index); } @@ -124,7 +124,7 @@ static ssize_t show_mem_end_phys_index(struct device *dev, struct memory_block *mem = to_memory_block(dev); unsigned long phys_index; - phys_index = mem->end_section_nr / sections_per_block; + phys_index = mem->end_section_nr; return sprintf(buf, "%08lx\n", phys_index); }
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