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OpenCloudOS-Kernel/arch/arc/include/asm
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Vineet Gupta a5c8b52abe ARCv2: STAR 9000837815 workaround hardware exclusive transactions livelock 
A quad core SMP build could get into hardware livelock with concurrent
LLOCK/SCOND. Workaround that by adding a PREFETCHW which is serialized by
SCU (System Coherency Unit). It brings the cache line in Exclusive state
and makes others invalidate their lines. This gives enough time for
winner to complete the LLOCK/SCOND, before others can get the line back.

The prefetchw in the ll/sc loop is not nice but this is the only
software workaround for current version of RTL.

Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
 		2015-06-25 06:00:18 +05:30
..
Kbuild ARCv2: barriers 2015-06-25 06:00:17 +05:30
arcregs.h ARCv2: MMUv4: cache programming model changes 2015-06-22 14:06:55 +05:30
asm-offsets.h ARC: Generic Headers 2013-01-28 12:34:21 +05:30
atomic.h ARCv2: STAR 9000837815 workaround hardware exclusive transactions livelock 2015-06-25 06:00:18 +05:30
barrier.h ARCv2: barriers 2015-06-25 06:00:17 +05:30
bitops.h ARC: Reduce bitops lines of code using macros 2015-06-25 06:00:18 +05:30
bug.h ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG)) 2014-10-13 14:46:18 +05:30
cache.h ARCv2: MMUv4: support aliasing icache config 2015-06-22 14:06:56 +05:30
cacheflush.h ARC: fold ___flush_dcache_page into __flush_dcache_page 2015-05-19 11:27:13 +05:30
checksum.h ARC: Checksum/byteorder/swab routines 2013-02-11 20:00:34 +05:30
clk.h ARC: [DeviceTree] Convert some Kconfig items to runtime values 2013-02-15 23:15:56 +05:30
cmpxchg.h ARC: add smp barriers around atomics per Documentation/atomic_ops.txt 2015-06-25 06:00:16 +05:30
current.h ARC: remove extraneous __KERNEL__ guards 2014-10-13 14:46:20 +05:30
delay.h ARCv2: Adhere to Zero Delay loop restriction 2015-06-22 14:06:56 +05:30
disasm.h ARC: disassembly (needed by kprobes/kgdb/unaligned-access-emul) 2013-02-15 23:16:04 +05:30
dma-mapping.h ARC: remove the unused platform helpers from dma mapping API 2015-06-19 18:09:23 +05:30
dma.h ARC: I/O and DMA Mappings 2013-02-15 23:15:54 +05:30
elf.h ARCv2: Support for ARCv2 ISA and HS38x cores 2015-06-22 14:06:55 +05:30
entry-arcv2.h ARCv2: Support for ARCv2 ISA and HS38x cores 2015-06-22 14:06:55 +05:30
entry-compact.h ARC: intc: split into ARCompact ISA specific, common bits 2015-06-19 18:09:40 +05:30
entry.h ARCv2: STAR 9000808988: signals involving Delay Slot 2015-06-22 14:06:55 +05:30
exec.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
futex.h ARC: Futex support 2013-02-15 23:16:00 +05:30
io.h ARCv2: barriers 2015-06-25 06:00:17 +05:30
irq.h ARCv2: SMP: Support ARConnect (MCIP) for Inter-Core-Interrupts et al 2015-06-22 14:06:56 +05:30
irqflags-arcv2.h ARCv2: STAR 9000814690: Really Re-enable interrupts to avoid deadlocks 2015-06-22 14:06:55 +05:30
irqflags-compact.h ARCv2: Support for ARCv2 ISA and HS38x cores 2015-06-22 14:06:55 +05:30
irqflags.h ARCv2: Support for ARCv2 ISA and HS38x cores 2015-06-22 14:06:55 +05:30
kdebug.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
kgdb.h ARC: Update order of registers in KGDB to match GDB 7.5 2014-10-13 14:46:20 +05:30
kprobes.h ARC: Remove explicit passing around of ECR 2013-06-26 15:30:50 +05:30
linkage.h ARC: switch to generic ENTRY/END assembler annotations 2014-03-26 14:31:28 +05:30
mach_desc.h arc: use common of_flat_dt_match_machine 2013-10-09 20:03:55 -05:00
mcip.h ARCv2: SMP: clocksource: Enable Global Real Time counter 2015-06-22 14:06:57 +05:30
mmu.h ARCv2: MMUv4: TLB programming Model changes 2015-06-22 14:06:55 +05:30
mmu_context.h ARC: [SMP] TLB flush 2013-11-06 10:41:45 +05:30
module.h ARC: DWARF2 .debug_frame based stack unwinder 2013-02-15 23:16:03 +05:30
mutex.h ARC: SMP support 2013-02-15 23:16:02 +05:30
page.h ARC: [mm] Make stack/heap Non-executable by default 2013-06-22 19:23:20 +05:30
perf_event.h ARC: perf: support cache hit/miss ratio 2015-04-20 18:27:34 +05:30
pgalloc.h arc: handle pgtable_page_ctor() fail 2013-11-15 09:32:16 +09:00
pgtable.h ARCv2: MMUv4: TLB programming Model changes 2015-06-22 14:06:55 +05:30
processor.h ARC: mm: document system mem map clearly 2015-06-19 18:09:29 +05:30
ptrace.h ARCv2: Support for ARCv2 ISA and HS38x cores 2015-06-22 14:06:55 +05:30
sections.h of/fdt: consolidate built-in dtb section variables 2014-04-30 00:59:13 -05:00
segment.h ARC: uaccess friends 2013-02-11 20:00:31 +05:30
serial.h ARC: Dynamically determine BASE_BAUD from DeviceTree 2015-02-02 17:08:37 +05:30
setup.h ARC: RIP @running_on_hw 2014-10-13 14:46:17 +05:30
shmparam.h ARC: [mm] Aliasing VIPT dcache support 4/4 2013-05-09 22:00:57 +05:30
smp.h ARC: Allow SMP kernel to build/boot on UP-only infrastructure 2014-09-27 14:49:01 +05:30
spinlock.h ARC: add smp barriers around atomics per Documentation/atomic_ops.txt 2015-06-25 06:00:16 +05:30
spinlock_types.h ARC: Code cosmetics (Nothing semantical) 2013-08-29 17:51:15 +05:30
stacktrace.h ARC: Make arc_unwind_core accessible externally 2015-02-27 10:15:00 +05:30
string.h ARC: remove extraneous __KERNEL__ guards 2014-10-13 14:46:20 +05:30
switch_to.h ARC: Process-creation/scheduling/idle-loop 2013-02-11 20:00:38 +05:30
syscall.h ARC: stop using pt_regs->orig_r8 2013-06-22 19:23:26 +05:30
syscalls.h ARC: remove extraneous __KERNEL__ guards 2014-10-13 14:46:20 +05:30
thread_info.h ARCv2: Support for ARCv2 ISA and HS38x cores 2015-06-22 14:06:55 +05:30
timex.h ARC: Timers/counters/delay management 2013-02-11 20:00:39 +05:30
tlb-mmu1.h ARC: Disintegrate arcregs.h 2013-06-22 13:46:42 +05:30
tlb.h ARC: Disintegrate arcregs.h 2013-06-22 13:46:42 +05:30
tlbflush.h ARC: [SMP] TLB flush 2013-11-06 10:41:45 +05:30
uaccess.h ARCv2: Adhere to Zero Delay loop restriction 2015-06-22 14:06:56 +05:30
unaligned.h ARC: rename kconfig option for unaligned emulation 2014-10-13 14:46:15 +05:30
unwind.h ARC: DWARF2 .debug_frame based stack unwinder 2013-02-15 23:16:03 +05:30