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| author | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:33:41 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:33:46 +0000 |
| commit | abf45ce84c4e36bd64aef20d7df9a79bd5e4b799 (patch) | |
| tree | f118e135bdd60b680703d1b38c7fdc7b9d7c503d /drivers/base/memory.c | |
| parent | 082f53c2f573c75a8f1610c587a43b6817e20f90 (diff) | |
| parent | b1f91a9ce335eb4e0fef17c10f39a438ac3fce9b (diff) | |
Merge branch 'imx/defconfig' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/soc
* 'imx/defconfig' of git://git.linaro.org/people/shawnguo/linux-2.6: (2 commits)
ARM: defconfig: imx_v6_v7: build in REGULATOR_FIXED_VOLTAGE
ARM: imx: update imx_v6_v7_defconfig
(upadte to v3.3-rc5)
Diffstat (limited to 'drivers/base/memory.c')
| -rw-r--r-- | drivers/base/memory.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index ed5de58c340..9e60dbe9fd9 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; |