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Add zpcpu_{set,add,sub}_protected.

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The _protected suffix follows counter(9).
This commit is contained in:
Mateusz Guzik 2020-02-07 22:43:58 +00:00
parent 14d3b06919
commit c77649d8e7
1 changed files with 18 additions and 0 deletions
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18
sys/sys/pcpu.h
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@ -256,6 +256,24 @@ extern struct pcpu *cpuid_to_pcpu[];
_old; \
})
#define zpcpu_set_protected(base, val) ({ \
MPASS(curthread->td_critnest > 0); \
__typeof(val) *_ptr = zpcpu_get(base); \
*_ptr = (val); \
})
#define zpcpu_add_protected(base, val) ({ \
MPASS(curthread->td_critnest > 0); \
__typeof(val) *_ptr = zpcpu_get(base); \
*_ptr += (val); \
})
#define zpcpu_sub_protected(base, val) ({ \
MPASS(curthread->td_critnest > 0); \
__typeof(val) *_ptr = zpcpu_get(base); \
*_ptr -= (val); \
})
/*
* Machine dependent callouts. cpu_pcpu_init() is responsible for
* initializing machine dependent fields of struct pcpu, and