perf, trace: Inline perf_swevent_put_recursion_context()

Inline perf_swevent_put_recursion_context into perf_tp_event(), this
shrinks the per trace template code footprint and saves a function
call.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/linux/ftrace_event.h

@@ -257,8 +257,7 @@ static inline void
 perf_trace_buf_submit(void *raw_data, int size, int rctx, u64 addr,
 		       u64 count, struct pt_regs *regs, void *head)
 {
-	perf_tp_event(addr, count, raw_data, size, regs, head);
-	perf_swevent_put_recursion_context(rctx);
+	perf_tp_event(addr, count, raw_data, size, regs, head, rctx);
 }
 #endif
 

include/linux/perf_event.h

@@ -1001,7 +1001,7 @@ static inline bool perf_paranoid_kernel(void)
 extern void perf_event_init(void);
 extern void perf_tp_event(u64 addr, u64 count, void *record,
 			  int entry_size, struct pt_regs *regs,
-			  struct hlist_head *head);
+			  struct hlist_head *head, int rctx);
 extern void perf_bp_event(struct perf_event *event, void *data);
 
 #ifndef perf_misc_flags

kernel/perf_event.c

@@ -4213,14 +4213,12 @@ int perf_swevent_get_recursion_context(void)
 }
 EXPORT_SYMBOL_GPL(perf_swevent_get_recursion_context);
 
-void perf_swevent_put_recursion_context(int rctx)
+void inline perf_swevent_put_recursion_context(int rctx)
 {
 	struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
 	barrier();
 	cpuctx->recursion[rctx]--;
 }
-EXPORT_SYMBOL_GPL(perf_swevent_put_recursion_context);
-
 
 void __perf_sw_event(u32 event_id, u64 nr, int nmi,
 			    struct pt_regs *regs, u64 addr)
@@ -4601,7 +4599,7 @@ static int perf_tp_event_match(struct perf_event *event,
 }
 
 void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
-		   struct pt_regs *regs, struct hlist_head *head)
+		   struct pt_regs *regs, struct hlist_head *head, int rctx)
 {
 	struct perf_sample_data data;
 	struct perf_event *event;
@@ -4621,6 +4619,8 @@ void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
 			perf_swevent_add(event, count, 1, &data, regs);
 	}
 	rcu_read_unlock();
+
+	perf_swevent_put_recursion_context(rctx);
 }
 EXPORT_SYMBOL_GPL(perf_tp_event);