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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-06 16:00:05 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-06 16:00:05 +0300 |
| commit | 1630e843e104528ddf0208dfc692c70c9bd05a89 (patch) | |
| tree | b75d583b719a0b1398162aceccf2f443e7d36858 /arch/sh/include/asm/barrier.h | |
| parent | 194d6ad32e1eef433c61040385dcfd98e6fe2ef9 (diff) | |
| parent | e61c10e468a42512f5fad74c00b62af5cc19f65f (diff) | |
| download | linux-1630e843e104528ddf0208dfc692c70c9bd05a89.tar.xz | |
Merge tag 'sh-for-4.8' of git://git.libc.org/linux-sh
Pull arch/sh updates from Rich Felker:
"These changes improve device tree support (including builtin DTB), add
support for the J-Core J2 processor, an open source synthesizable
reimplementation of the SH-2 ISA, resolve a longstanding sigcontext
ABI mismatch issue, and fix various bugs including nommu-specific
issues and minor regressions introduced in 4.6.
The J-Core arch support is included here but to be usable it needs
drivers that are waiting on approval/inclusion from their subsystem
maintainers"
* tag 'sh-for-4.8' of git://git.libc.org/linux-sh: (23 commits)
sh: add device tree source for J2 FPGA on Mimas v2 board
sh: add defconfig for J-Core J2
sh: use common clock framework with device tree boards
sh: system call wire up
sh: Delete unnecessary checks before the function call "mempool_destroy"
sh: do not perform IPI-based cache flush except on boards that need it
sh: add SMP support for J2
sh: SMP support for SH2 entry.S
sh: add working futex atomic ops on userspace addresses for smp
sh: add J2 atomics using the cas.l instruction
sh: add AT_HWCAP flag for J-Core cas.l instruction
sh: add support for J-Core J2 processor
sh: fix build regression with CONFIG_OF && !CONFIG_OF_FLATTREE
sh: allow clocksource drivers to register sched_clock backends
sh: make heartbeat driver explicitly non-modular
sh: make board-secureedge5410 explicitly non-modular
sh: make mm/asids-debugfs explicitly non-modular
sh: make time.c explicitly non-modular
sh: fix futex/robust_list on nommu models
sh: disable aliased page logic on NOMMU models
...
Diffstat (limited to 'arch/sh/include/asm/barrier.h')
| -rw-r--r-- | arch/sh/include/asm/barrier.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/sh/include/asm/barrier.h b/arch/sh/include/asm/barrier.h index 8a84e05adb2e..3c30b6e166b6 100644 --- a/arch/sh/include/asm/barrier.h +++ b/arch/sh/include/asm/barrier.h @@ -29,6 +29,11 @@ #define wmb() mb() #define ctrl_barrier() __icbi(PAGE_OFFSET) #else +#if defined(CONFIG_CPU_J2) && defined(CONFIG_SMP) +#define __smp_mb() do { int tmp = 0; __asm__ __volatile__ ("cas.l %0,%0,@%1" : "+r"(tmp) : "z"(&tmp) : "memory", "t"); } while(0) +#define __smp_rmb() __smp_mb() +#define __smp_wmb() __smp_mb() +#endif #define ctrl_barrier() __asm__ __volatile__ ("nop;nop;nop;nop;nop;nop;nop;nop") #endif |