Hi,
this series replaces the spinlock_irq-protected 64-bit res_counters
with lockless word-sized page counters.
Version 2 has many changes over the first submission. Among a ton of
bugfixes and performance improvements (thanks, Vladimir!), the series
has also been restructured to improve reviewability, and to address
concerns about the hugetlb controller depending on compile-time memcg:
optimizations:
- converted page_counter_try_charge() from CAS to FAA [vladimir]
fixes:
- fixed kmem's notion of "unlimited" [vladimir]
- fixed page_counter_cancel() return value [vladimir]
- based page counter range on atomic_long_t's max [vladimir]
- fixed tcp memcontrol's usage reporting [vladimir]
- fixed hugepage limit page alignment [vladimir]
- fixed page_counter_limit() serialization [vladimir]
cleanups:
- moved new page_counter API to its own file [vladimir, michal]
- documented page counter API [vladimir]
- documented acceptable race conditions [vladimir]
- split out res_counter removal to reduce patch size [vladimir]
- split out hugetlb controller conversion to reduce patch size
- split page_counter_charge and page_counter_try_charge [vladimir]
- wrapped signed-to-unsigned read in page_counter_read() [vladimir]
- wrapped watermark reset in page_counter_reset_watermark() [vladimir]
- reverted counter->limited back to counter->failcnt [vladimir]
- changed underflow to WARN_ON_ONCE and counter revert [kame, vladimir]
Documentation/cgroups/hugetlb.txt | 2 +-
Documentation/cgroups/memory.txt | 4 +-
Documentation/cgroups/resource_counter.txt | 197 ---------
include/linux/hugetlb_cgroup.h | 1 -
include/linux/memcontrol.h | 5 +-
include/linux/page_counter.h | 49 +++
include/linux/res_counter.h | 223 ----------
include/net/sock.h | 26 +-
init/Kconfig | 12 +-
kernel/Makefile | 1 -
kernel/res_counter.c | 211 ---------
mm/Makefile | 1 +
mm/hugetlb_cgroup.c | 104 +++--
mm/memcontrol.c | 635 +++++++++++++--------------
mm/page_counter.c | 191 ++++++++
net/ipv4/tcp_memcontrol.c | 87 ++--
16 files changed, 659 insertions(+), 1090 deletions(-)
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>