Driver core fixes for the 3.3-rc3 tree.
A few fixes for kobject warnings that have popped up in the cpu hotplug path, and a regression fix for the speed of the hotplug memory code. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iEYEABECAAYFAk80J1cACgkQMUfUDdst+ylYfgCcClIeUw4njh3Tup9BpRrdBprr fBsAoLKKhaZDsnma85PJRDAvtM2guoi7 =0TZ9 -----END PGP SIGNATURE----- Merge tag 'driver-core-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Driver core fixes for the 3.3-rc3 tree. A few fixes for kobject warnings that have popped up in the cpu hotplug path, and a regression fix for the speed of the hotplug memory code. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> * tag 'driver-core-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: driver-core: cpu: fix kobject warning when hotplugging a cpu ACPI: remove duplicated lines of merging problems with acpi_processor_add docbook: fix fatal errors in device-drivers docbook and add DMA Management section drivers/base/memory.c: fix memory_dev_init() long delay driver core: cpu: remove kernel warning when removing a cpu
This commit is contained in:
commit
b0286db49a
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@ -208,6 +208,25 @@ static ssize_t print_cpus_offline(struct device *dev,
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}
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}
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static DEVICE_ATTR(offline, 0444, print_cpus_offline, NULL);
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static DEVICE_ATTR(offline, 0444, print_cpus_offline, NULL);
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static void cpu_device_release(struct device *dev)
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{
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/*
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* This is an empty function to prevent the driver core from spitting a
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* warning at us. Yes, I know this is directly opposite of what the
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* documentation for the driver core and kobjects say, and the author
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* of this code has already been publically ridiculed for doing
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* something as foolish as this. However, at this point in time, it is
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* the only way to handle the issue of statically allocated cpu
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* devices. The different architectures will have their cpu device
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* code reworked to properly handle this in the near future, so this
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* function will then be changed to correctly free up the memory held
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* by the cpu device.
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*
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* Never copy this way of doing things, or you too will be made fun of
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* on the linux-kerenl list, you have been warned.
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*/
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}
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/*
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/*
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* register_cpu - Setup a sysfs device for a CPU.
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* register_cpu - Setup a sysfs device for a CPU.
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* @cpu - cpu->hotpluggable field set to 1 will generate a control file in
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* @cpu - cpu->hotpluggable field set to 1 will generate a control file in
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@ -221,8 +240,10 @@ int __cpuinit register_cpu(struct cpu *cpu, int num)
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int error;
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int error;
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cpu->node_id = cpu_to_node(num);
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cpu->node_id = cpu_to_node(num);
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memset(&cpu->dev, 0x00, sizeof(struct device));
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cpu->dev.id = num;
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cpu->dev.id = num;
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cpu->dev.bus = &cpu_subsys;
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cpu->dev.bus = &cpu_subsys;
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cpu->dev.release = cpu_device_release;
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error = device_register(&cpu->dev);
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error = device_register(&cpu->dev);
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if (!error && cpu->hotpluggable)
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if (!error && cpu->hotpluggable)
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register_cpu_control(cpu);
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register_cpu_control(cpu);
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@ -572,19 +572,36 @@ static int init_memory_block(struct memory_block **memory,
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}
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}
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static int add_memory_section(int nid, struct mem_section *section,
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static int add_memory_section(int nid, struct mem_section *section,
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struct memory_block **mem_p,
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unsigned long state, enum mem_add_context context)
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unsigned long state, enum mem_add_context context)
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{
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{
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struct memory_block *mem;
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struct memory_block *mem = NULL;
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int scn_nr = __section_nr(section);
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int ret = 0;
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int ret = 0;
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mutex_lock(&mem_sysfs_mutex);
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mutex_lock(&mem_sysfs_mutex);
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if (context == BOOT) {
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/* same memory block ? */
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if (mem_p && *mem_p)
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if (scn_nr >= (*mem_p)->start_section_nr &&
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scn_nr <= (*mem_p)->end_section_nr) {
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mem = *mem_p;
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kobject_get(&mem->dev.kobj);
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}
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} else
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mem = find_memory_block(section);
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mem = find_memory_block(section);
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if (mem) {
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if (mem) {
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mem->section_count++;
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mem->section_count++;
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kobject_put(&mem->dev.kobj);
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kobject_put(&mem->dev.kobj);
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} else
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} else {
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ret = init_memory_block(&mem, section, state);
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ret = init_memory_block(&mem, section, state);
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/* store memory_block pointer for next loop */
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if (!ret && context == BOOT)
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if (mem_p)
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*mem_p = mem;
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}
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if (!ret) {
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if (!ret) {
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if (context == HOTPLUG &&
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if (context == HOTPLUG &&
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@ -627,7 +644,7 @@ int remove_memory_block(unsigned long node_id, struct mem_section *section,
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*/
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*/
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int register_new_memory(int nid, struct mem_section *section)
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int register_new_memory(int nid, struct mem_section *section)
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{
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{
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return add_memory_section(nid, section, MEM_OFFLINE, HOTPLUG);
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return add_memory_section(nid, section, NULL, MEM_OFFLINE, HOTPLUG);
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}
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}
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int unregister_memory_section(struct mem_section *section)
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int unregister_memory_section(struct mem_section *section)
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@ -647,6 +664,7 @@ int __init memory_dev_init(void)
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int ret;
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int ret;
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int err;
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int err;
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unsigned long block_sz;
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unsigned long block_sz;
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struct memory_block *mem = NULL;
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ret = subsys_system_register(&memory_subsys, NULL);
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ret = subsys_system_register(&memory_subsys, NULL);
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if (ret)
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if (ret)
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@ -662,7 +680,10 @@ int __init memory_dev_init(void)
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for (i = 0; i < NR_MEM_SECTIONS; i++) {
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for (i = 0; i < NR_MEM_SECTIONS; i++) {
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if (!present_section_nr(i))
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if (!present_section_nr(i))
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continue;
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continue;
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err = add_memory_section(0, __nr_to_section(i), MEM_ONLINE,
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/* don't need to reuse memory_block if only one per block */
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err = add_memory_section(0, __nr_to_section(i),
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(sections_per_block == 1) ? NULL : &mem,
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MEM_ONLINE,
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BOOT);
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BOOT);
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if (!ret)
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if (!ret)
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ret = err;
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ret = err;
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@ -456,7 +456,15 @@ static int link_mem_sections(int nid)
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if (!present_section_nr(section_nr))
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if (!present_section_nr(section_nr))
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continue;
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continue;
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mem_sect = __nr_to_section(section_nr);
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mem_sect = __nr_to_section(section_nr);
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/* same memblock ? */
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if (mem_blk)
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if ((section_nr >= mem_blk->start_section_nr) &&
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(section_nr <= mem_blk->end_section_nr))
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continue;
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mem_blk = find_memory_block_hinted(mem_sect, mem_blk);
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mem_blk = find_memory_block_hinted(mem_sect, mem_blk);
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ret = register_mem_sect_under_node(mem_blk, nid);
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ret = register_mem_sect_under_node(mem_blk, nid);
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if (!err)
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if (!err)
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err = ret;
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err = ret;
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