Vineet Gupta e6e335bf3a ARC: change return value of userspace cmpxchg assist syscall ... The original syscall only used to return errno to indicate if cmpxchg succeeded. It was not returning the "previous" value which typical cmpxchg callers are interested in to build their slowpaths or retry loops. Given user preemption in syscall return path etc, it is not wise to check this in userspace afterwards, but should be what kernel actually observed in the syscall. So change the syscall interface to always return the previous value and additionally set Z flag to indicate whether operation succeeded or not (just like ARM implementation when they used to have this syscall) The flag approach avoids having to put_user errno which is nice given the use case for this syscall cares mostly about the "previous" value. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>		2016-11-07 11:01:12 -08:00
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.gitignore	ARC: Add some .gitignore entries	2013-08-26 09:40:24 +05:30
arc_hostlink.c	ARC: Hostlink Pseudo-Driver for Metaware Debugger	2013-02-15 23:16:10 +05:30
arcksyms.c	ARC: export __udivdi3 for modules	2016-08-19 14:09:33 -07:00
asm-offsets.c	ARCv2: [vdk] dts files and defconfig for HS38 VDK	2015-06-25 06:00:21 +05:30
ctx_sw.c	ARC: [plat-eznps] Use dedicated identity auxiliary register.	2016-05-09 09:32:33 +05:30
ctx_sw_asm.S	ARC: dw2 unwind: enable cfi pseudo ops in string lib	2016-09-30 14:48:22 -07:00
devtree.c	ARC: RIP arc_{get|set}_core_freq() clk API	2016-05-09 09:32:31 +05:30
disasm.c	ARC: rename kconfig option for unaligned emulation	2014-10-13 14:46:15 +05:30
entry-arcv2.S	ARCv2: Enable LOCKDEP	2016-04-22 18:12:31 +05:30
entry-compact.S	ARC: [intc-compact] simplify code for 2 priority levels	2016-05-30 22:45:04 +05:30
entry.S	ARC: entry: make ret_from_system_call local label	2016-09-30 14:48:21 -07:00
fpu.c	ARC: Process-creation/scheduling/idle-loop	2013-02-11 20:00:38 +05:30
head.S	ARC: boot: Non Master cpus only need to call EARLY_CPU_SETUP once	2015-10-28 16:13:42 +05:30
intc-arcv2.c	ARCv2: intc: Use kflag if STATUS32.IE must be reset	2016-09-30 14:48:24 -07:00
intc-compact.c	ARC: [intc-compact] simplify code for 2 priority levels	2016-05-30 22:45:04 +05:30
irq.c	ARC: [intc-*] Do a domain lookup in primary handler for hwirq -> linux virq	2016-05-09 09:32:30 +05:30
kgdb.c	ARC: kgdb: generic kgdb_arch_pc() suffices	2014-10-22 16:14:04 -06:00
kprobes.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-11-15 16:47:22 -08:00
Makefile	ARC: RIP arc_{get|set}_core_freq() clk API	2016-05-09 09:32:31 +05:30
mcip.c	ARCv2: intc: untangle SMP, MCIP and IDU	2016-10-16 15:49:07 -07:00
module.c	ARC: module: print pretty section names	2016-10-28 10:10:29 -07:00
pcibios.c	ARC: Add PCI support	2016-03-10 14:44:13 -06:00
perf_event.c	arc: perf: Enable generic "cache-references" and "cache-misses" events	2016-09-30 14:48:18 -07:00
process.c	ARC: change return value of userspace cmpxchg assist syscall	2016-11-07 11:01:12 -08:00
ptrace.c	ARCv2: Support for ARCv2 ISA and HS38x cores	2015-06-22 14:06:55 +05:30
reset.c	arc: export symbol for pm_power_off in reset.c	2013-11-06 10:41:44 +05:30
setup.c	ARC: boot log: refactor cpu name/release printing	2016-10-28 10:09:07 -07:00
signal.c	arc: don't leak bits of kernel stack into coredump	2016-09-15 19:51:55 -04:00
smp.c	ARC: [SMP] avoid overriding present cpumask	2016-10-31 17:12:41 -07:00
stacktrace.c	arc: unwind: warn only once if DW2_UNWIND is disabled	2016-06-28 11:11:44 +05:30
sys.c	ARC: ABIv3: fork/vfork wrappers not needed in "no-legacy-syscall" ABI	2013-03-11 19:01:10 +05:30
time.c	ARC/time: Convert to hotplug state machine	2016-07-15 10:41:46 +02:00
traps.c	ARC: rename unhandled exception handler	2015-04-13 15:14:57 +05:30
troubleshoot.c	ARC: mm: retire ARC_DBG_TLB_MISS_COUNT...	2016-10-28 10:10:28 -07:00
unaligned.c	ARC: change some branchs to jumps to resolve linkage errors	2015-08-20 18:53:15 +05:30
unwind.c	ARC: dw2 unwind: switch to .eh_frame based unwinding	2016-09-30 14:48:20 -07:00
vmlinux.lds.S	nmi_backtrace: generate one-line reports for idle cpus	2016-10-07 18:46:30 -07:00