diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/sh/include/asm/atomic-grb.h | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/sh/include/asm/atomic-grb.h')
| -rw-r--r-- | kernel/arch/sh/include/asm/atomic-grb.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/kernel/arch/sh/include/asm/atomic-grb.h b/kernel/arch/sh/include/asm/atomic-grb.h new file mode 100644 index 000000000..97a5fda83 --- /dev/null +++ b/kernel/arch/sh/include/asm/atomic-grb.h @@ -0,0 +1,94 @@ +#ifndef __ASM_SH_ATOMIC_GRB_H +#define __ASM_SH_ATOMIC_GRB_H + +#define ATOMIC_OP(op) \ +static inline void atomic_##op(int i, atomic_t *v) \ +{ \ + int tmp; \ + \ + __asm__ __volatile__ ( \ + " .align 2 \n\t" \ + " mova 1f, r0 \n\t" /* r0 = end point */ \ + " mov r15, r1 \n\t" /* r1 = saved sp */ \ + " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \ + " mov.l @%1, %0 \n\t" /* load old value */ \ + " " #op " %2, %0 \n\t" /* $op */ \ + " mov.l %0, @%1 \n\t" /* store new value */ \ + "1: mov r1, r15 \n\t" /* LOGOUT */ \ + : "=&r" (tmp), \ + "+r" (v) \ + : "r" (i) \ + : "memory" , "r0", "r1"); \ +} \ + +#define ATOMIC_OP_RETURN(op) \ +static inline int atomic_##op##_return(int i, atomic_t *v) \ +{ \ + int tmp; \ + \ + __asm__ __volatile__ ( \ + " .align 2 \n\t" \ + " mova 1f, r0 \n\t" /* r0 = end point */ \ + " mov r15, r1 \n\t" /* r1 = saved sp */ \ + " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ \ + " mov.l @%1, %0 \n\t" /* load old value */ \ + " " #op " %2, %0 \n\t" /* $op */ \ + " mov.l %0, @%1 \n\t" /* store new value */ \ + "1: mov r1, r15 \n\t" /* LOGOUT */ \ + : "=&r" (tmp), \ + "+r" (v) \ + : "r" (i) \ + : "memory" , "r0", "r1"); \ + \ + return tmp; \ +} + +#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) + +ATOMIC_OPS(add) +ATOMIC_OPS(sub) + +#undef ATOMIC_OPS +#undef ATOMIC_OP_RETURN +#undef ATOMIC_OP + +static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +{ + int tmp; + unsigned int _mask = ~mask; + + __asm__ __volatile__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ + " mov.l @%1, %0 \n\t" /* load old value */ + " and %2, %0 \n\t" /* add */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (v) + : "r" (_mask) + : "memory" , "r0", "r1"); +} + +static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +{ + int tmp; + + __asm__ __volatile__ ( + " .align 2 \n\t" + " mova 1f, r0 \n\t" /* r0 = end point */ + " mov r15, r1 \n\t" /* r1 = saved sp */ + " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ + " mov.l @%1, %0 \n\t" /* load old value */ + " or %2, %0 \n\t" /* or */ + " mov.l %0, @%1 \n\t" /* store new value */ + "1: mov r1, r15 \n\t" /* LOGOUT */ + : "=&r" (tmp), + "+r" (v) + : "r" (mask) + : "memory" , "r0", "r1"); +} + +#endif /* __ASM_SH_ATOMIC_GRB_H */ |