From a776a1c1c5597a174fa95f7d6d2be2f8bb50d274 Mon Sep 17 00:00:00 2001 From: Andriy Gapon Date: Tue, 26 Nov 2013 08:49:53 +0000 Subject: sdt: add support for solaris/illumos style DTRACE_PROBE macros The new macros are implemented in terms of SDT_PROBE_DEFINE and SDT_PROBE. Probes defined in this way will appear under SDT provider named "sdt". Parameter types are exposed via SDT_PROBE_ARGTYPE. This is something that illumos does not have by default. This kind of SDT probes is already present in ZFS code, so those probes will now be available if KDTRACE_HOOKS options is enabled. A potential future illumos compatibility enhancement is to encode a provider name as a prefix in a probe name. Reviewed by: markj MFC after: 3 weeks X-MFC after: r258622 --- sys/sys/sdt.h | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) (limited to 'sys/sys/sdt.h') diff --git a/sys/sys/sdt.h b/sys/sys/sdt.h index 9e39625b54f9..ca820f68bce1 100644 --- a/sys/sys/sdt.h +++ b/sys/sys/sdt.h @@ -126,6 +126,14 @@ arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5, arg6, \ xarg6) +#define DTRACE_PROBE(name) +#define DTRACE_PROBE1(name, type0, arg0) +#define DTRACE_PROBE2(name, type0, arg0, type1, arg1) +#define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2) +#define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3) +#define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3,\ + type4, arg4) + #else SET_DECLARE(sdt_providers_set, struct sdt_provider); @@ -313,6 +321,51 @@ SET_DECLARE(sdt_argtypes_set, struct sdt_argtype); (uintptr_t)arg6); \ } while (0) +#define DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4) do { \ + static SDT_PROBE_DEFINE(sdt, , , name); \ + SDT_PROBE(sdt, , , name, arg0, arg1, arg2, arg3, arg4); +#define DTRACE_PROBE_IMPL_END } while (0) + +#define DTRACE_PROBE(name) \ + DTRACE_PROBE_IMPL_START(name, 0, 0, 0, 0, 0) \ + DTRACE_PROBE_IMPL_END + +#define DTRACE_PROBE1(name, type0, arg0) \ + DTRACE_PROBE_IMPL_START(name, arg0, 0, 0, 0, 0) \ + SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ + DTRACE_PROBE_IMPL_END + +#define DTRACE_PROBE2(name, type0, arg0, type1, arg1) \ + DTRACE_PROBE_IMPL_START(name, arg0, arg1, 0, 0, 0) \ + SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ + DTRACE_PROBE_IMPL_END + +#define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2) \ + DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, 0, 0) \ + SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ + DTRACE_PROBE_IMPL_END + +#define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3) \ + DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, 0) \ + SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL); \ + DTRACE_PROBE_IMPL_END + +#define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3, \ + type4, arg4) \ + DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4) \ + SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL); \ + SDT_PROBE_ARGTYPE(sdt, , , name, 4, #type4, NULL); \ + DTRACE_PROBE_IMPL_END + #endif /* KDTRACE_HOOKS */ /* @@ -365,6 +418,8 @@ struct sdt_provider { void sdt_probe_stub(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t); +SDT_PROVIDER_DECLARE(sdt); + #endif /* _KERNEL */ #endif /* _SYS_SDT_H */ -- cgit v1.2.3