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ck_spinlock: Only enable trylock for ck_spinlock_ticket on x86*.

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trylock algorithm semantics are not cleanly defined outside of x86.
ck_pring 0.2.18
Samy Al Bahra 12 years ago
parent b1a40dcc34
commit a5e8d6ad45
1 changed files with 2 additions and 2 deletions
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4
include/ck_spinlock.h
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@ -408,9 +408,9 @@ ck_spinlock_dec_unlock(struct ck_spinlock_dec *lock)
/* /*
* If 16-bit or 32-bit increment is supported, implement support for * If 16-bit or 32-bit increment is supported, implement support for
* trylock functionality on availability of 32-bit or 64-bit fetch-and-add * trylock functionality on availability of 32-bit or 64-bit fetch-and-add
* and compare-and-swap. * and compare-and-swap. This code path is only applied to x86*.
*/ */
#if defined(CK_MD_TSO) #if defined(CK_MD_TSO) && (defined(__x86__) || defined(__x86_64__))
#if defined(CK_F_PR_FAA_32) && defined(CK_F_PR_INC_16) && defined(CK_F_PR_CAS_32) #if defined(CK_F_PR_FAA_32) && defined(CK_F_PR_INC_16) && defined(CK_F_PR_CAS_32)
#define CK_SPINLOCK_TICKET_TYPE uint32_t #define CK_SPINLOCK_TICKET_TYPE uint32_t
#define CK_SPINLOCK_TICKET_TYPE_BASE uint16_t #define CK_SPINLOCK_TICKET_TYPE_BASE uint16_t

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