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-rw-r--r--init/Kconfig13
-rw-r--r--init/main.c6
2 files changed, 12 insertions, 7 deletions
diff --git a/init/Kconfig b/init/Kconfig
index d10f31dfa0b2..25373cf32672 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -932,6 +932,7 @@ menu "Performance Counters"
config PERF_COUNTERS
bool "Kernel Performance Counters"
+ default y if PROFILING
depends on HAVE_PERF_COUNTERS
select ANON_INODES
help
@@ -953,9 +954,17 @@ config PERF_COUNTERS
Say Y if unsure.
config EVENT_PROFILE
- bool "Tracepoint profile sources"
- depends on PERF_COUNTERS && EVENT_TRACER
+ bool "Tracepoint profiling sources"
+ depends on PERF_COUNTERS && EVENT_TRACING
default y
+ help
+ Allow the use of tracepoints as software performance counters.
+
+ When this is enabled, you can create perf counters based on
+ tracepoints using PERF_TYPE_TRACEPOINT and the tracepoint ID
+ found in debugfs://tracing/events/*/*/id. (The -e/--events
+ option to the perf tool can parse and interpret symbolic
+ tracepoints, in the subsystem:tracepoint_name format.)
endmenu
diff --git a/init/main.c b/init/main.c
index 4870dfeb9ee5..2c5ade79eb81 100644
--- a/init/main.c
+++ b/init/main.c
@@ -24,6 +24,7 @@
#include <linux/smp_lock.h>
#include <linux/initrd.h>
#include <linux/bootmem.h>
+#include <linux/acpi.h>
#include <linux/tty.h>
#include <linux/gfp.h>
#include <linux/percpu.h>
@@ -88,11 +89,6 @@ extern void sbus_init(void);
extern void prio_tree_init(void);
extern void radix_tree_init(void);
extern void free_initmem(void);
-#ifdef CONFIG_ACPI
-extern void acpi_early_init(void);
-#else
-static inline void acpi_early_init(void) { }
-#endif
#ifndef CONFIG_DEBUG_RODATA
static inline void mark_rodata_ro(void) { }
#endif