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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-05-23 10:38:55 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-01 21:37:09 +0200 |
| commit | b2c064b25ad07169b2892a733918e6b941bf3366 (patch) | |
| tree | e479497010ec39e986885f58df535feb4e1ae05f | |
| parent | ACPI / processor: Initialize per_cpu(processors, pr->id) properly (diff) | |
| download | linux-b2c064b25ad07169b2892a733918e6b941bf3366.tar.xz linux-b2c064b25ad07169b2892a733918e6b941bf3366.zip | |
Driver core / memory: Simplify __memory_block_change_state()
As noted by Tang Chen, the last_online field in struct memory_block
introduced by commit 4960e05 (Driver core: Introduce offline/online
callbacks for memory blocks) is not really necessary, because
online_pages() restores the previous state if passed ONLINE_KEEP as
the last argument. Therefore, remove that field along with the code
referring to it.
References: http://marc.info/?l=linux-kernel&m=136919777305599&w=2
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Tang Chen <tangchen@cn.fujitsu.com>
| -rw-r--r-- | drivers/base/memory.c | 11 | ||||
| -rw-r--r-- | include/linux/memory.h | 1 |
2 files changed, 2 insertions, 10 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index c8f3b63fcacd..c7092bc3c01e 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -291,13 +291,7 @@ static int __memory_block_change_state(struct memory_block *mem, mem->state = MEM_GOING_OFFLINE; ret = memory_block_action(mem->start_section_nr, to_state, online_type); - if (ret) { - mem->state = from_state_req; - } else { - mem->state = to_state; - if (to_state == MEM_ONLINE) - mem->last_online = online_type; - } + mem->state = ret ? from_state_req : to_state; return ret; } @@ -310,7 +304,7 @@ static int memory_subsys_online(struct device *dev) ret = mem->state == MEM_ONLINE ? 0 : __memory_block_change_state(mem, MEM_ONLINE, MEM_OFFLINE, - mem->last_online); + ONLINE_KEEP); mutex_unlock(&mem->state_mutex); return ret; @@ -618,7 +612,6 @@ static int init_memory_block(struct memory_block **memory, base_memory_block_id(scn_nr) * sections_per_block; mem->end_section_nr = mem->start_section_nr + sections_per_block - 1; mem->state = state; - mem->last_online = ONLINE_KEEP; mem->section_count++; mutex_init(&mem->state_mutex); start_pfn = section_nr_to_pfn(mem->start_section_nr); diff --git a/include/linux/memory.h b/include/linux/memory.h index 3d5346583022..85c31a8e2904 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -26,7 +26,6 @@ struct memory_block { unsigned long start_section_nr; unsigned long end_section_nr; unsigned long state; - int last_online; int section_count; /* |