From d60f20339175619c0dd8b90aac184e4382ad6a74 Mon Sep 17 00:00:00 2001
From: Luis Gerhorst <luis.gerhorst@fau.de>
Date: Thu, 28 Jun 2018 21:29:41 +0200
Subject: [PATCH] measuremore: insert checkpoint into tracepoint macro
Required to discover conditions that lead to measurement results
delivered by measuremore core.
By hooking into the existing kernel tracpoints macro, we can record a
checkpoint whenever it is used. Kernel checkpoints exist at various
places inside existing kernel code, thus this allows for a detailed
analysis but in return introduces more overhead than the default
measuremore checkpoints.
---
include/linux/tracepoint.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index be586c632a0c0..28ac87d84f054 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -20,6 +20,7 @@
#include <linux/cpumask.h>
#include <linux/rcupdate.h>
#include <linux/tracepoint-defs.h>
+#include <linux/measuremore.h>
struct module;
struct tracepoint;
@@ -182,6 +183,7 @@ extern void syscall_unregfunc(void);
extern struct tracepoint __tracepoint_##name; \
static inline void trace_##name(proto) \
{ \
+ memo_checkpoint("trace_" #name); \
if (static_key_false(&__tracepoint_##name.key)) \
__DO_TRACE(&__tracepoint_##name, \
TP_PROTO(data_proto), \
--
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