From 2701121b8f4db4d69c327c0d8f8694ff2ce30ef7 Mon Sep 17 00:00:00 2001 From: Denis Kirjanov Date: Mon, 14 Dec 2015 23:18:05 +0300 Subject: [PATCH] tracing: Introduce TRACE_EVENT_FN_COND macro TRACE_EVENT_FN can't be used in some circumstances like invoking trace functions from offlined CPU due to RCU usage. This patch adds the TRACE_EVENT_FN_COND macro to make such trace points conditional. Link: http://lkml.kernel.org/r/1450124286-4822-1-git-send-email-kda@linux-powerpc.org Signed-off-by: Denis Kirjanov Signed-off-by: Steven Rostedt --- include/linux/tracepoint.h | 4 ++++ include/trace/define_trace.h | 6 ++++++ include/trace/trace_events.h | 6 ++++++ 3 files changed, 16 insertions(+) diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 696a339c592c..45b3fcf7dd3c 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -493,6 +493,10 @@ extern void syscall_unregfunc(void); #define TRACE_EVENT_FN(name, proto, args, struct, \ assign, print, reg, unreg) \ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#define TRACE_EVENT_FN_COND(name, proto, args, cond, struct, \ + assign, print, reg, unreg) \ + DECLARE_TRACE_CONDITION(name, PARAMS(proto), \ + PARAMS(args), PARAMS(cond)) #define TRACE_EVENT_CONDITION(name, proto, args, cond, \ struct, assign, print) \ DECLARE_TRACE_CONDITION(name, PARAMS(proto), \ diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h index 2d8639ea64d5..6e3945f64102 100644 --- a/include/trace/define_trace.h +++ b/include/trace/define_trace.h @@ -40,6 +40,11 @@ assign, print, reg, unreg) \ DEFINE_TRACE_FN(name, reg, unreg) +#undef TRACE_EVENT_FN_COND +#define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \ + assign, print, reg, unreg) \ + DEFINE_TRACE_FN(name, reg, unreg) + #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) \ DEFINE_TRACE(name) @@ -93,6 +98,7 @@ #undef TRACE_EVENT #undef TRACE_EVENT_FN +#undef TRACE_EVENT_FN_COND #undef TRACE_EVENT_CONDITION #undef DECLARE_EVENT_CLASS #undef DEFINE_EVENT diff --git a/include/trace/trace_events.h b/include/trace/trace_events.h index de996cf61053..170c93bbdbb7 100644 --- a/include/trace/trace_events.h +++ b/include/trace/trace_events.h @@ -123,6 +123,12 @@ TRACE_MAKE_SYSTEM_STR(); TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ +#undef TRACE_EVENT_FN_COND +#define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \ + assign, print, reg, unreg) \ + TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \ + PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ + #undef TRACE_EVENT_FLAGS #define TRACE_EVENT_FLAGS(name, value) \ __TRACE_EVENT_FLAGS(name, value) -- 2.20.1