linux-sg2042/mm
Linus Torvalds 620e77533f Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU changes from Ingo Molnar:

 0. 'idle RCU':

     Adds RCU APIs that allow non-idle tasks to enter RCU idle mode and
     provides x86 code to make use of them, allowing RCU to treat
     user-mode execution as an extended quiescent state when the new
     RCU_USER_QS kernel configuration parameter is specified.  (Work is
     in progress to port this to a few other architectures, but is not
     part of this series.)

 1.  A fix for a latent bug that has been in RCU ever since the addition
     of CPU stall warnings.  This bug results in false-positive stall
     warnings, but thus far only on embedded systems with severely
     cut-down userspace configurations.

 2.  Further reductions in latency spikes for huge systems, along with
     additional boot-time adaptation to the actual hardware.

     This is a large change, as it moves RCU grace-period initialization
     and cleanup, along with quiescent-state forcing, from softirq to a
     kthread.  However, it appears to be in quite good shape (famous
     last words).

 3.  Updates to documentation and rcutorture, the latter category
     including keeping statistics on CPU-hotplug latencies and fixing
     some initialization-time races.

 4.  CPU-hotplug fixes and improvements.

 5.  Idle-loop fixes that were omitted on an earlier submission.

 6.  Miscellaneous fixes and improvements

In certain RCU configurations new kernel threads will show up (rcu_bh,
rcu_sched), showing RCU processing overhead.

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (90 commits)
  rcu: Apply micro-optimization and int/bool fixes to RCU's idle handling
  rcu: Userspace RCU extended QS selftest
  x86: Exit RCU extended QS on notify resume
  x86: Use the new schedule_user API on userspace preemption
  rcu: Exit RCU extended QS on user preemption
  rcu: Exit RCU extended QS on kernel preemption after irq/exception
  x86: Exception hooks for userspace RCU extended QS
  x86: Unspaghettize do_general_protection()
  x86: Syscall hooks for userspace RCU extended QS
  rcu: Switch task's syscall hooks on context switch
  rcu: Ignore userspace extended quiescent state by default
  rcu: Allow rcu_user_enter()/exit() to nest
  rcu: Settle config for userspace extended quiescent state
  rcu: Make RCU_FAST_NO_HZ handle adaptive ticks
  rcu: New rcu_user_enter_after_irq() and rcu_user_exit_after_irq() APIs
  rcu: New rcu_user_enter() and rcu_user_exit() APIs
  ia64: Add missing RCU idle APIs on idle loop
  xtensa: Add missing RCU idle APIs on idle loop
  score: Add missing RCU idle APIs on idle loop
  parisc: Add missing RCU idle APIs on idle loop
  ...
2012-10-01 10:16:42 -07:00
..
Kconfig mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
Kconfig.debug mm: more intensive memory corruption debugging 2012-01-10 16:30:42 -08:00
Makefile mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
backing-dev.c vfs: kill write_super and sync_supers 2012-08-04 01:24:44 +04:00
bootmem.c bootmem: Fix the short description of reserve_bootmem() 2012-08-27 07:57:21 -07:00
bounce.c bounce: allow use of bounce pool via config option 2012-07-18 16:40:35 -04:00
cleancache.c ->encode_fh() API change 2012-05-29 23:28:33 -04:00
compaction.c mm: compaction: Abort async compaction if locks are contended or taking too long 2012-08-21 16:45:03 -07:00
debug-pagealloc.c mm, x86: Remove debug_pagealloc_enabled 2011-12-06 09:24:07 +01:00
dmapool.c mm: fix implicit stat.h usage in dmapool.c 2011-10-31 09:20:12 -04:00
fadvise.c mm, fadvise: don't return -EINVAL when filesystem cannot implement fadvise() 2012-07-31 18:42:42 -07:00
failslab.c switch debugfs to umode_t 2012-01-03 22:54:56 -05:00
filemap.c block: move down direct IO plugging 2012-08-09 15:23:09 +02:00
filemap_xip.c fs: Protect write paths by sb_start_write - sb_end_write 2012-07-31 09:45:47 +04:00
fremap.c mm: delete various needless include <linux/module.h> 2011-10-31 09:20:11 -04:00
frontswap.c mm/frontswap: cleanup doc and comment error 2012-07-23 11:16:20 -04:00
highmem.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
huge_memory.c thp: avoid VM_BUG_ON page_count(page) false positives in __collapse_huge_page_copy 2012-09-28 08:38:09 -07:00
hugetlb.c mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables 2012-07-31 18:42:50 -07:00
hugetlb_cgroup.c hugetlb/cgroup: remove exclude and wakeup rmdir calls from migrate 2012-07-31 18:42:41 -07:00
hwpoison-inject.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
init-mm.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
internal.h mm: compaction: Abort async compaction if locks are contended or taking too long 2012-08-21 16:45:03 -07:00
kmemcheck.c
kmemleak-test.c kmemleak: remove memset by using kzalloc 2011-01-27 18:31:51 +00:00
kmemleak.c kmemleak: Replace list_for_each_continue_rcu with new interface 2012-09-23 07:42:52 -07:00
ksm.c ksm: cleanup: introduce find_mergeable_vma() 2012-03-21 17:54:59 -07:00
maccess.c mm: Map most files to use export.h instead of module.h 2011-10-31 09:20:12 -04:00
madvise.c mm: Hold a file reference in madvise_remove 2012-07-06 10:34:38 -07:00
memblock.c mm/memblock: Use NULL instead of 0 for pointers 2012-09-05 08:32:30 +02:00
memcontrol.c memcg: add mem_cgroup_from_css() helper 2012-07-31 18:42:49 -07:00
memory-failure.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
memory.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
memory_hotplug.c memory hotplug: fix section info double registration bug 2012-09-17 15:00:38 -07:00
mempolicy.c Remove user-triggerable BUG from mpol_to_str 2012-09-06 09:37:58 -07:00
mempool.c mempool: add @gfp_mask to mempool_create_node() 2012-06-25 11:53:47 +02:00
migrate.c mm: memcg: fix compaction/migration failing due to memcg limits 2012-07-31 18:42:48 -07:00
mincore.c mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode 2012-03-21 17:54:54 -07:00
mlock.c vm: avoid using find_vma_prev() unnecessarily 2012-03-06 18:23:36 -08:00
mm_init.c mm: Map most files to use export.h instead of module.h 2011-10-31 09:20:12 -04:00
mmap.c Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-08-23 21:48:41 -07:00
mmu_context.c mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat() 2012-03-21 17:54:59 -07:00
mmu_notifier.c mm: mmu_notifier: fix freed page still mapped in secondary MMU 2012-07-31 18:42:49 -07:00
mmzone.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
mprotect.c Merge branch 'akpm' (Andrew's patch-bomb) 2012-03-22 09:04:48 -07:00
mremap.c mm: account the total_vm in the vm_stat_account() 2012-07-31 18:42:39 -07:00
msync.c
nobootmem.c memblock: free allocated memblock_reserved_regions later 2012-07-11 16:04:50 -07:00
nommu.c nommu: fix compilation of nommu.c 2012-06-04 17:17:31 -04:00
oom_kill.c mm, memcg: move all oom handling to memcontrol.c 2012-07-31 18:42:45 -07:00
page-writeback.c vfs: kill write_super and sync_supers 2012-08-04 01:24:44 +04:00
page_alloc.c mm/page_alloc: fix the page address of higher page's buddy calculation 2012-09-17 15:00:38 -07:00
page_cgroup.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
page_io.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
page_isolation.c memory-hotplug: fix kswapd looping forever problem 2012-07-31 18:42:45 -07:00
pagewalk.c mm: fix kernel-doc warnings 2012-06-20 14:39:36 -07:00
percpu-km.c percpu: clear memory allocated with the km allocator 2010-10-02 10:28:42 +03:00
percpu-vm.c mm: fix kernel-doc warnings 2012-06-20 14:39:36 -07:00
percpu.c kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP 2012-05-09 10:13:29 -07:00
pgtable-generic.c arch/tile: allow building Linux with transparent huge pages enabled 2012-05-25 12:48:21 -04:00
prio_tree.c sanitize <linux/prefetch.h> usage 2011-05-20 12:50:29 -07:00
process_vm_access.c aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector() 2012-05-31 17:49:32 -07:00
quicklist.c mm: delete various needless include <linux/module.h> 2011-10-31 09:20:11 -04:00
readahead.c mm: move readahead syscall to mm/readahead.c 2012-05-29 16:22:23 -07:00
rmap.c mm: remove swap token code 2012-05-29 16:22:19 -07:00
shmem.c tmpfs: distribute interleave better across nodes 2012-07-31 18:42:50 -07:00
slab.c slab: fix starting index for finding another object 2012-09-17 15:00:38 -07:00
slab.h mm, sl[aou]b: Use a common mutex definition 2012-07-09 12:13:41 +03:00
slab_common.c mm: Fix build warning in kmem_cache_create() 2012-07-30 13:15:40 +03:00
slob.c slob: Fix early boot kernel crash 2012-07-12 10:13:22 +03:00
slub.c slub: consider pfmemalloc_match() in get_partial_node() 2012-09-17 15:00:38 -07:00
sparse-vmemmap.c mm: delete various needless include <linux/module.h> 2011-10-31 09:20:11 -04:00
sparse.c mm/sparse: remove index_init_lock 2012-07-31 18:42:49 -07:00
swap.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
swap_state.c mm: add support for a filesystem to activate swap files and use direct_IO for writing swap pages 2012-07-31 18:42:47 -07:00
swapfile.c mm: swapfile: clean up unuse_pte race handling 2012-07-31 18:42:48 -07:00
truncate.c mm/fs: remove truncate_range 2012-05-29 16:22:23 -07:00
util.c new helper: vm_mmap_pgoff() 2012-06-01 10:37:18 -04:00
vmalloc.c mm: make vb_alloc() more foolproof 2012-07-31 18:42:39 -07:00
vmscan.c memory hotplug: reset pgdat->kswapd to NULL if creating kernel thread fails 2012-09-17 15:00:37 -07:00
vmstat.c mm: account for the number of times direct reclaimers get throttled 2012-07-31 18:42:46 -07:00