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locks: Mask futexes aligned

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System call sys_futex() requires that (from futex(2)):

    "On all platforms, futexes are four-byte integers
     that must be aligned on a four-byte boundary".

travis-ci: success for locks: Mask futexes aligned
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
This commit is contained in:
Kirill Tkhai 2017-02-01 17:27:00 +03:00 • committed by Pavel Emelyanov
parent d7f3be8a8e
commit 06552fa3a2
1 changed files with 2 additions and 1 deletions
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3
include/common/lock.h
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@ -7,6 +7,7 @@
#include <limits.h>
#include <errno.h>
#include "common/asm/atomic.h"
#include "common/compiler.h"
#define LOCK_BUG_ON(condition) \
if ((condition)) \
@ -29,7 +30,7 @@ static inline long sys_futex (uint32_t *addr1, int op, uint32_t val1,
typedef struct {
atomic_t raw;
} futex_t;
} __aligned(sizeof(int)) futex_t;
#define FUTEX_ABORT_FLAG (0x80000000)
#define FUTEX_ABORT_RAW (-1U)