23 lines
952 B
C
23 lines
952 B
C
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// hakmem_trace.h - Optional USDT tracepoints for perf (user-space static probes)
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// Enable by building with: CFLAGS+=-DHAKMEM_USDT=1 and having <sys/sdt.h> available
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// When disabled, all macros compile to no-ops (zero overhead).
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#ifndef HAKMEM_TRACE_H
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#define HAKMEM_TRACE_H
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#if HAKMEM_USDT
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# include <sys/sdt.h>
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# define HAK_TP0(name) DTRACE_PROBE(hakmem, name)
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# define HAK_TP1(name,a1) DTRACE_PROBE1(hakmem, name, (a1))
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# define HAK_TP2(name,a1,a2) DTRACE_PROBE2(hakmem, name, (a1), (a2))
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# define HAK_TP3(name,a1,a2,a3) DTRACE_PROBE3(hakmem, name, (a1), (a2), (a3))
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#else
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# define HAK_TP0(name) do{}while(0)
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# define HAK_TP1(name,a1) do{ (void)(a1); }while(0)
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# define HAK_TP2(name,a1,a2) do{ (void)(a1); (void)(a2); }while(0)
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# define HAK_TP3(name,a1,a2,a3) do{ (void)(a1); (void)(a2); (void)(a3); }while(0)
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#endif
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#endif // HAKMEM_TRACE_H
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