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51f443a074
Add fm_panic define Add another bad atomic hack (need to do this right) git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@35 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
78 lines
1.3 KiB
C
78 lines
1.3 KiB
C
#ifndef _SPL_ATOMIC_H
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#define _SPL_ATOMIC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <linux/module.h>
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/* FIXME - NONE OF THIS IS ATOMIC, IT SHOULD BE. I think we can
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* get by for now since I'm only working on real 64bit systems but
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* this will need to be addressed properly.
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*/
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static __inline__ void
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atomic_inc_64(volatile uint64_t *target)
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{
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(*target)++;
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}
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static __inline__ void
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atomic_dec_64(volatile uint64_t *target)
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{
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(*target)--;
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}
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static __inline__ uint32_t
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atomic_add_32(volatile uint32_t *target, int32_t delta)
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{
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uint32_t rc = *target;
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*target += delta;
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return rc;
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}
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static __inline__ uint64_t
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atomic_add_64(volatile uint64_t *target, uint64_t delta)
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{
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uint64_t rc = *target;
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*target += delta;
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return rc;
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}
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static __inline__ uint64_t
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atomic_add_64_nv(volatile uint64_t *target, uint64_t delta)
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{
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*target += delta;
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return *target;
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}
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static __inline__ uint64_t
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atomic_cas_64(volatile uint64_t *target, uint64_t cmp,
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uint64_t newval)
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{
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uint64_t rc = *target;
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if (*target == cmp)
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*target = newval;
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return rc;
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}
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static __inline__ void *
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atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
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{
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void *rc = (void *)target;
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if (target == cmp)
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target = newval;
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return rc;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SPL_ATOMIC_H */
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