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authorAndi Kleen <ak@linux.intel.com>2015-12-01 17:00:58 -0800
committerIngo Molnar <mingo@kernel.org>2015-12-06 12:56:06 +0100
commitbd2a634d9e852b9b6100f9ae9c3c790b0ff91ce0 (patch)
tree2889189e41e1068cfa0a731683c2f8ae78926b9c /include/linux/tracepoint.h
parent153a4334c439cfb62e1d31cee0c790ba4157813d (diff)
downloadop-kernel-dev-bd2a634d9e852b9b6100f9ae9c3c790b0ff91ce0.zip
op-kernel-dev-bd2a634d9e852b9b6100f9ae9c3c790b0ff91ce0.tar.gz
tracepoints: Move struct tracepoint to new tracepoint-defs.h header
Steven recommended open coding access to tracepoint->key to add trace points to headers. Unfortunately this is difficult for some headers (such as x86 asm/msr.h) because including tracepoint.h includes so many other headers that it causes include loops. The main problem is the include of linux/rcupdate.h, which pulls in a lot of other headers. The rcu header is only needed when actually defining trace points. Move the struct tracepoint into a separate tracepoint-defs.h header that can be included without pulling in all of RCU. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1449018060-1742-2-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/tracepoint.h')
-rw-r--r--include/linux/tracepoint.h16
1 files changed, 1 insertions, 15 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 696a339c..f7c732b 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -17,26 +17,12 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/rcupdate.h>
-#include <linux/static_key.h>
+#include <linux/tracepoint-defs.h>
struct module;
struct tracepoint;
struct notifier_block;
-struct tracepoint_func {
- void *func;
- void *data;
- int prio;
-};
-
-struct tracepoint {
- const char *name; /* Tracepoint name */
- struct static_key key;
- void (*regfunc)(void);
- void (*unregfunc)(void);
- struct tracepoint_func __rcu *funcs;
-};
-
struct trace_enum_map {
const char *system;
const char *enum_string;
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