Messages in this thread | | | From | Jason Low <> | Subject | [RFC][PATCH 0/7] locking/rwsem: Convert rwsem count to atomic_long_t | Date | Mon, 16 May 2016 17:37:59 -0700 |
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The first patch contains an optimization for acquiring the rwsem write lock in the slowpath.
This rest of the series converts the rwsem count variable to an atomic_long_t since it is used it as an atomic variable. This allows us to also remove the rwsem_atomic_{add,update} abstraction and reduce 100+ lines of code.
arch/alpha/include/asm/rwsem.h | 42 -------------------------------- arch/ia64/include/asm/rwsem.h | 7 ------ arch/s390/include/asm/rwsem.h | 37 ----------------------------- arch/x86/include/asm/rwsem.h | 18 -------------- include/asm-generic/rwsem.h | 16 ------------- include/linux/rwsem.h | 6 ++--- kernel/locking/rwsem-xadd.c | 54 ++++++++++++++++++++++++++---------------- 7 files changed, 36 insertions(+), 144 deletions(-)
-- 2.1.4
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