Paul Burton 3ba7f44d2b MIPS: cmpxchg: Implement 1 byte & 2 byte cmpxchg() ...

Implement support for 1 & 2 byte cmpxchg() using read-modify-write atop
a 4 byte cmpxchg(). This allows us to support these atomic operations
despite the MIPS ISA only providing 4 & 8 byte atomic operations.

This is required in order to support queued rwlocks (qrwlock) in a later
patch, since these make use of a 1 byte cmpxchg() in their slow path.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16355/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2017-06-29 02:42:25 +02:00

..

.gitignore

…

8250-platform.c

…

asm-offsets.c

MIPS: IRQ Stack: Unwind IRQ stack onto task stack

2017-03-22 11:53:57 +01:00

binfmt_elfn32.c

fs/binfmt: Convert obsolete cputime type to nsecs

2017-02-01 09:13:51 +01:00

binfmt_elfo32.c

fs/binfmt: Convert obsolete cputime type to nsecs

2017-02-01 09:13:51 +01:00

bmips_5xxx_init.S

MIPS: BMIPS: Make whitespacely correct.

2016-05-09 12:00:01 +02:00

bmips_vec.S

MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code

2016-05-09 12:00:01 +02:00

branch.c

MIPS: Fix bnezc/jialc return address calculation

2017-06-15 11:47:42 +02:00

cacheinfo.c

MIPS: Fix cacheinfo overflow

2017-02-13 18:57:34 +00:00

cevt-bcm1480.c

MIPS: clockevent drivers: Set ->min_delta_ticks and ->max_delta_ticks

2017-04-14 13:11:16 -07:00

cevt-ds1287.c

MIPS: clockevent drivers: Set ->min_delta_ticks and ->max_delta_ticks

2017-04-14 13:11:16 -07:00

cevt-gt641xx.c

MIPS: clockevent drivers: Set ->min_delta_ticks and ->max_delta_ticks

2017-04-14 13:11:16 -07:00

cevt-r4k.c

MIPS: cevt-r4k: Fix out-of-bounds array access

2017-04-10 13:31:12 +02:00

cevt-sb1250.c

MIPS: clockevent drivers: Set ->min_delta_ticks and ->max_delta_ticks

2017-04-14 13:11:16 -07:00

cevt-txx9.c

MIPS: clockevent drivers: Set ->min_delta_ticks and ->max_delta_ticks

2017-04-14 13:11:16 -07:00

cmpxchg.c

MIPS: cmpxchg: Implement 1 byte & 2 byte cmpxchg()

2017-06-29 02:42:25 +02:00

cps-vec-ns16550.S

MIPS: CPS: Early debug using an ns16550-compatible UART

2015-11-11 08:34:25 +01:00

cps-vec.S

MIPS: smp-cps: Fix retrieval of VPE mask on big endian CPUs

2017-03-21 20:39:40 +01:00

cpu-bugs64.c

MIPS: Fix printk continuations in cpu-bugs64.c

2017-01-24 18:30:34 +01:00

cpu-probe.c

MIPS: Loongson: Add Loongson-3A R3 basic support

2017-06-28 12:22:42 +02:00

crash_dump.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

crash.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

csrc-bcm1480.c

clocksource: Use a plain u64 instead of cycle_t

2016-12-25 11:04:12 +01:00

csrc-ioasic.c

clocksource: Use a plain u64 instead of cycle_t

2016-12-25 11:04:12 +01:00

csrc-r4k.c

clocksource: Use a plain u64 instead of cycle_t

2016-12-25 11:04:12 +01:00

csrc-sb1250.c

clocksource: Use a plain u64 instead of cycle_t

2016-12-25 11:04:12 +01:00

early_printk_8250.c

…

early_printk.c

…

elf.c

MIPS: Avoid BUG warning in arch_check_elf

2017-04-12 15:22:13 +02:00

entry.S

MIPS: Remove r2_emul_return from struct thread_info

2017-01-03 16:34:41 +01:00

ftrace.c

MIPS: ftrace: fix init functions tracing

2017-06-08 14:51:59 +02:00

genex.S

MIPS: IRQ Stack: Unwind IRQ stack onto task stack

2017-03-22 11:53:57 +01:00

gpio_txx9.c

MIPS: txx9: switch to gpiochip_add_data()

2016-02-19 09:51:44 +01:00

head.S

MIPS: store the appended dtb address in a variable

2016-08-02 14:00:16 +02:00

i8253.c

…

idle.c

MIPS: Loongson: Add Loongson-3A R2 basic support

2016-05-13 14:02:14 +02:00

irq_txx9.c

…

irq-gt641xx.c

…

irq-msc01.c

…

irq-rm7000.c

…

irq.c

MIPS: Introduce irq_stack

2017-01-03 16:34:34 +01:00

jump_label.c

jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}

2015-08-03 11:34:12 +02:00

kgdb.c

MIPS: KGDB: Use kernel context for sleeping threads

2017-04-12 22:29:22 +02:00

kprobes.c

MIPS: tracing: disable uprobe/kprobe on compact branch instructions

2016-10-06 17:37:40 +02:00

linux32.c

MIPS: Return directly in 32_mmap2()

2017-01-25 02:51:11 +01:00

machine_kexec.c

MIPS: kexec: add debug info about the new kexec'ed image

2017-01-03 16:34:46 +01:00

Makefile

MIPS: cmpxchg: Implement 1 byte & 2 byte xchg()

2017-06-29 02:42:25 +02:00

mcount.S

MIPS: Export _mcount alongside its definition

2017-01-03 16:34:49 +01:00

mips_machine.c

…

mips-cm.c

tree-wide: replace config_enabled() with IS_ENABLED()

2016-08-04 08:50:07 -04:00

mips-cpc.c

MIPS: CPC: Provide default mips_cpc_default_phys_base to ignore CPC

2016-11-04 00:17:46 +01:00

mips-mt-fpaff.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>

2017-03-02 08:42:35 +01:00

mips-mt.c

…

mips-r2-to-r6-emul.c

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2017-05-12 09:56:30 -07:00

module.c

MIPS: module: Unify rel & rela reloc handling

2017-06-28 12:22:38 +02:00

octeon_switch.S

MIPS: Fix octeon FP context switch handling

2015-10-02 19:16:06 +02:00

perf_event_mipsxx.c

MIPS: perf: add I6500 handling

2017-06-28 12:22:39 +02:00

perf_event.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

pm-cps.c

cpu/hotplug: Cleanup state names

2016-12-25 10:47:44 +01:00

pm.c

MIPS: Fix watchpoint restoration

2016-05-09 12:00:02 +02:00

probes-common.h

MIPS: tracing: disable uprobe/kprobe on compact branch instructions

2016-10-06 17:37:40 +02:00

proc.c

MIPS: Move identification of VP(E) into proc.c from smp-mt.c

2016-10-04 16:13:57 +02:00

process.c

kthread: fix boot hang (regression) on MIPS/OpenRISC

2017-05-29 09:40:54 -07:00

prom.c

MIPS: Use early_init_fdt_reserve_self to protect DTB location

2017-01-03 16:34:45 +01:00

ptrace32.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

ptrace.c

MIPS: Give __secure_computing() access to syscall arguments.

2017-06-28 12:22:39 +02:00

r4k_fpu.S

MIPS: Use copy_s.fmt rather than copy_u.fmt

2016-05-09 12:00:04 +02:00

r4k_switch.S

MIPS: Remove dead define of ST_OFF

2017-04-12 13:52:21 +02:00

r2300_fpu.S

MIPS: Correct MIPS I FP sigcontext layout

2016-11-04 01:39:23 +01:00

r2300_switch.S

MIPS: Export _save_fp & _save_msa alongside their definitions

2017-01-03 16:34:49 +01:00

r6000_fpu.S

MIPS: Fix ISA I/II FP signal context offsets

2016-11-04 01:38:52 +01:00

relocate_kernel.S

MIPS: Replace add and sub instructions in relocate_kernel.S with addiu

2015-08-03 15:26:30 +02:00

relocate.c

MIPS: KASLR: Add missing header files

2017-04-12 17:02:04 +02:00

reset.c

MIPS: Provide fallback reboot/poweroff/halt implementations

2015-04-01 17:21:58 +02:00

rtlx-cmp.c

…

rtlx-mt.c

…

rtlx.c

sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>

2017-03-02 08:42:32 +01:00

scall32-o32.S

MIPS: Save static registers before sysmips

2017-06-28 12:22:40 +02:00

scall64-64.S

MIPS: Save static registers before sysmips

2017-06-28 12:22:40 +02:00

scall64-n32.S

MIPS: Save static registers before sysmips

2017-06-28 12:22:40 +02:00

scall64-o32.S

MIPS: Save static registers before sysmips

2017-06-28 12:22:40 +02:00

segment.c

MIPS: Print segment physical address when EU=1

2016-07-28 11:44:30 +02:00

setup.c

MIPS: cmdline: Add support for 'memmap' parameter

2017-06-29 02:42:23 +02:00

signal32.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

signal_n32.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

signal_o32.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>

2017-03-02 08:42:29 +01:00

signal-common.h

MIPS: Save MSA extended context around signals

2015-09-03 12:07:59 +02:00

signal.c

Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

2016-08-06 09:13:11 -04:00

smp-bmips.c

MIPS: Add missing include files

2017-03-08 10:38:06 +01:00

smp-cmp.c

MIPS: Make smp CMP, CPS and MT use the new generic IPI functions

2016-02-25 10:56:58 +01:00

smp-cps.c

Merge branch '4.11-fixes' into mips-for-linux-next

2017-04-13 00:48:47 +02:00

smp-mt.c

MIPS: smp-mt: Use CPU interrupt controller IPI IRQ domain support

2017-04-12 23:13:13 +02:00

smp-up.c

…

smp.c

MIPS: Stengthen IPI IRQ domain sanity check

2017-04-12 23:13:44 +02:00

spinlock_test.c

MIPS: Declare mips_debugfs_dir in a header

2015-10-26 09:49:42 +01:00

spram.c

MIPS: Add P6600 cases to CPU switch statements

2016-05-13 14:01:52 +02:00

stacktrace.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

sync-r4k.c

MIPS: sync-r4k: Fix KERN_CONT fallout

2017-02-13 18:58:39 +00:00

syscall.c

MIPS: Branch straight to ll in mips_atomic_set()

2017-06-28 12:22:40 +02:00

sysrq.c

MIPS: Refactor dumping of TLB registers for r3k/r4k

2015-09-03 12:07:45 +02:00

time.c

KVM: MIPS: Implement VZ support

2017-03-28 14:53:54 +01:00

topology.c

…

traps.c

format-security: move static strings to const

2017-05-08 17:15:14 -07:00

unaligned.c

MIPS: unaligned: Add DSP lwx & lhx missaligned access support

2017-06-29 02:42:24 +02:00

uprobes.c

MIPS: uprobes: Remove __weak attribute from arch_uprobe_copy_ixol.

2017-01-03 16:34:48 +01:00

vdso.c

userfaultfd: non-cooperative: add event for memory unmaps

2017-02-24 17:46:55 -08:00

vmlinux.lds.S

debug: Fix __bug_table[] in arch linker scripts

2017-04-03 10:22:40 +02:00

vpe-cmp.c

…

vpe-mt.c

…

vpe.c

module: use a structure to encapsulate layout.

2015-12-04 22:46:25 +01:00

watch.c

MIPS: Add and use watch register field definitions

2016-05-13 14:02:13 +02:00