diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/metag/include/asm/atomic.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/metag/include/asm/atomic.h')
-rw-r--r-- | kernel/arch/metag/include/asm/atomic.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/kernel/arch/metag/include/asm/atomic.h b/kernel/arch/metag/include/asm/atomic.h new file mode 100644 index 000000000..470e365f0 --- /dev/null +++ b/kernel/arch/metag/include/asm/atomic.h @@ -0,0 +1,49 @@ +#ifndef __ASM_METAG_ATOMIC_H +#define __ASM_METAG_ATOMIC_H + +#include <linux/compiler.h> +#include <linux/types.h> +#include <asm/cmpxchg.h> +#include <asm/barrier.h> + +#if defined(CONFIG_METAG_ATOMICITY_IRQSOFF) +/* The simple UP case. */ +#include <asm-generic/atomic.h> +#else + +#if defined(CONFIG_METAG_ATOMICITY_LOCK1) +#include <asm/atomic_lock1.h> +#else +#include <asm/atomic_lnkget.h> +#endif + +#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) + +#define atomic_dec_return(v) atomic_sub_return(1, (v)) +#define atomic_inc_return(v) atomic_add_return(1, (v)) + +/* + * atomic_inc_and_test - increment and test + * @v: pointer of type atomic_t + * + * Atomically increments @v by 1 + * and returns true if the result is zero, or false for all + * other cases. + */ +#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) + +#define atomic_sub_and_test(i, v) (atomic_sub_return((i), (v)) == 0) +#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0) + +#define atomic_inc(v) atomic_add(1, (v)) +#define atomic_dec(v) atomic_sub(1, (v)) + +#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) + +#endif + +#define atomic_dec_if_positive(v) atomic_sub_if_positive(1, v) + +#include <asm-generic/atomic64.h> + +#endif /* __ASM_METAG_ATOMIC_H */ |