diff options
Diffstat (limited to 'drivers/base/memory.c')
| -rw-r--r-- | drivers/base/memory.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 4d4e0e7b6e92..3ad49a00029f 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -101,6 +101,21 @@ static ssize_t show_mem_phys_index(struct sys_device *dev, } /* + * Show whether the section of memory is likely to be hot-removable + */ +static ssize_t show_mem_removable(struct sys_device *dev, char *buf) +{ + unsigned long start_pfn; + int ret; + struct memory_block *mem = + container_of(dev, struct memory_block, sysdev); + + start_pfn = section_nr_to_pfn(mem->phys_index); + ret = is_mem_section_removable(start_pfn, PAGES_PER_SECTION); + return sprintf(buf, "%d\n", ret); +} + +/* * online, offline, going offline, etc. */ static ssize_t show_mem_state(struct sys_device *dev, @@ -189,9 +204,8 @@ memory_block_action(struct memory_block *mem, unsigned long action) } break; default: - printk(KERN_WARNING "%s(%p, %ld) unknown action: %ld\n", + WARN(1, KERN_WARNING "%s(%p, %ld) unknown action: %ld\n", __func__, mem, action, action); - WARN_ON(1); ret = -EINVAL; } @@ -262,6 +276,7 @@ static ssize_t show_phys_device(struct sys_device *dev, static SYSDEV_ATTR(phys_index, 0444, show_mem_phys_index, NULL); static SYSDEV_ATTR(state, 0644, show_mem_state, store_mem_state); static SYSDEV_ATTR(phys_device, 0444, show_phys_device, NULL); +static SYSDEV_ATTR(removable, 0444, show_mem_removable, NULL); #define mem_create_simple_file(mem, attr_name) \ sysdev_create_file(&mem->sysdev, &attr_##attr_name) @@ -350,6 +365,8 @@ static int add_memory_block(unsigned long node_id, struct mem_section *section, ret = mem_create_simple_file(mem, state); if (!ret) ret = mem_create_simple_file(mem, phys_device); + if (!ret) + ret = mem_create_simple_file(mem, removable); return ret; } @@ -394,6 +411,7 @@ int remove_memory_block(unsigned long node_id, struct mem_section *section, mem_remove_simple_file(mem, phys_index); mem_remove_simple_file(mem, state); mem_remove_simple_file(mem, phys_device); + mem_remove_simple_file(mem, removable); unregister_memory(mem, section); return 0; |