diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/cpu.c | 21 | ||||
| -rw-r--r-- | drivers/base/memory.c | 31 | ||||
| -rw-r--r-- | drivers/base/node.c | 8 |
3 files changed, 55 insertions, 5 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index db87e78d7459..4dabf5077c48 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -208,6 +208,25 @@ static ssize_t print_cpus_offline(struct device *dev, } static DEVICE_ATTR(offline, 0444, print_cpus_offline, NULL); +static void cpu_device_release(struct device *dev) +{ + /* + * This is an empty function to prevent the driver core from spitting a + * warning at us. Yes, I know this is directly opposite of what the + * documentation for the driver core and kobjects say, and the author + * of this code has already been publically ridiculed for doing + * something as foolish as this. However, at this point in time, it is + * the only way to handle the issue of statically allocated cpu + * devices. The different architectures will have their cpu device + * code reworked to properly handle this in the near future, so this + * function will then be changed to correctly free up the memory held + * by the cpu device. + * + * Never copy this way of doing things, or you too will be made fun of + * on the linux-kerenl list, you have been warned. + */ +} + /* * register_cpu - Setup a sysfs device for a CPU. * @cpu - cpu->hotpluggable field set to 1 will generate a control file in @@ -221,8 +240,10 @@ int __cpuinit register_cpu(struct cpu *cpu, int num) int error; cpu->node_id = cpu_to_node(num); + memset(&cpu->dev, 0x00, sizeof(struct device)); cpu->dev.id = num; cpu->dev.bus = &cpu_subsys; + cpu->dev.release = cpu_device_release; error = device_register(&cpu->dev); if (!error && cpu->hotpluggable) register_cpu_control(cpu); diff --git a/drivers/base/memory.c b/drivers/base/memory.c index ed5de58c340f..9e60dbe9fd94 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -572,19 +572,36 @@ static int init_memory_block(struct memory_block **memory, } static int add_memory_section(int nid, struct mem_section *section, + struct memory_block **mem_p, unsigned long state, enum mem_add_context context) { - struct memory_block *mem; + struct memory_block *mem = NULL; + int scn_nr = __section_nr(section); int ret = 0; mutex_lock(&mem_sysfs_mutex); - mem = find_memory_block(section); + if (context == BOOT) { + /* same memory block ? */ + if (mem_p && *mem_p) + if (scn_nr >= (*mem_p)->start_section_nr && + scn_nr <= (*mem_p)->end_section_nr) { + mem = *mem_p; + kobject_get(&mem->dev.kobj); + } + } else + mem = find_memory_block(section); + if (mem) { mem->section_count++; kobject_put(&mem->dev.kobj); - } else + } else { ret = init_memory_block(&mem, section, state); + /* store memory_block pointer for next loop */ + if (!ret && context == BOOT) + if (mem_p) + *mem_p = mem; + } if (!ret) { if (context == HOTPLUG && @@ -627,7 +644,7 @@ int remove_memory_block(unsigned long node_id, struct mem_section *section, */ int register_new_memory(int nid, struct mem_section *section) { - return add_memory_section(nid, section, MEM_OFFLINE, HOTPLUG); + return add_memory_section(nid, section, NULL, MEM_OFFLINE, HOTPLUG); } int unregister_memory_section(struct mem_section *section) @@ -647,6 +664,7 @@ int __init memory_dev_init(void) int ret; int err; unsigned long block_sz; + struct memory_block *mem = NULL; ret = subsys_system_register(&memory_subsys, NULL); if (ret) @@ -662,7 +680,10 @@ int __init memory_dev_init(void) for (i = 0; i < NR_MEM_SECTIONS; i++) { if (!present_section_nr(i)) continue; - err = add_memory_section(0, __nr_to_section(i), MEM_ONLINE, + /* don't need to reuse memory_block if only one per block */ + err = add_memory_section(0, __nr_to_section(i), + (sections_per_block == 1) ? NULL : &mem, + MEM_ONLINE, BOOT); if (!ret) ret = err; diff --git a/drivers/base/node.c b/drivers/base/node.c index 44f427a66117..90aa2a11a933 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -456,7 +456,15 @@ static int link_mem_sections(int nid) if (!present_section_nr(section_nr)) continue; mem_sect = __nr_to_section(section_nr); + + /* same memblock ? */ + if (mem_blk) + if ((section_nr >= mem_blk->start_section_nr) && + (section_nr <= mem_blk->end_section_nr)) + continue; + mem_blk = find_memory_block_hinted(mem_sect, mem_blk); + ret = register_mem_sect_under_node(mem_blk, nid); if (!err) err = ret; |