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authorDenis Kirjanov <kda@linux-powerpc.org>2015-12-14 21:18:05 +0100
committerSteven Rostedt <rostedt@goodmis.org>2015-12-23 20:27:21 +0100
commit2701121b8f4db4d69c327c0d8f8694ff2ce30ef7 (patch)
tree8075d22174057d82cf72134c1923efd303dd6df3 /include/trace/define_trace.h
parenttracing: Use seq_buf_used() in seq_buf_to_user() instead of len (diff)
downloadlinux-2701121b8f4db4d69c327c0d8f8694ff2ce30ef7.tar.xz
linux-2701121b8f4db4d69c327c0d8f8694ff2ce30ef7.zip
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 <kda@linux-powerpc.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/trace/define_trace.h')
-rw-r--r--include/trace/define_trace.h6
1 files changed, 6 insertions, 0 deletions
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