This series makes a bunch of cleanups & improvements to the cmpxchg() &
xchg() macros & functions, allowing them to be used on values smaller
than 4 bytes, then switches MIPS over to use generic queued spinlocks &
queued read/write locks.
Applies atop v4.12-rc4.
Paul Burton (11):
MIPS: cmpxchg: Unify R10000_LLSC_WAR & non-R10000_LLSC_WAR cases
MIPS: cmpxchg: Pull xchg() asm into a macro
MIPS: cmpxchg: Use __compiletime_error() for bad cmpxchg() pointers
MIPS: cmpxchg: Error out on unsupported xchg() calls
MIPS: cmpxchg: Drop __xchg_u{32,64} functions
MIPS: cmpxchg: Implement __cmpxchg() as a function
MIPS: cmpxchg: Implement 1 byte & 2 byte xchg()
MIPS: cmpxchg: Implement 1 byte & 2 byte cmpxchg()
MIPS: cmpxchg: Rearrange __xchg() arguments to match xchg()
MIPS: Use queued read/write locks (qrwlock)
MIPS: Use queued spinlocks (qspinlock)
arch/mips/Kconfig | 2 +
arch/mips/include/asm/Kbuild | 2 +
arch/mips/include/asm/cmpxchg.h | 280 ++++++++++------------
arch/mips/include/asm/spinlock.h | 426 +--------------------------------
arch/mips/include/asm/spinlock_types.h | 34 +--
arch/mips/kernel/Makefile | 2 +-
arch/mips/kernel/cmpxchg.c | 109 +++++++++
7 files changed, 239 insertions(+), 616 deletions(-)
create mode 100644 arch/mips/kernel/cmpxchg.c
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2.13.1
