trace: rename unlikely profiler to branch profiler
Impact: name change of unlikely tracer and profiler
Ingo Molnar suggested changing the config from UNLIKELY_PROFILE
to BRANCH_PROFILING. I never did like the "unlikely" name so I
went one step farther, and renamed all the unlikely configurations
to a "BRANCH" variant.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 8abcaf8..9c89526 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -159,7 +159,7 @@
selected, because the self-tests are an initcall as well and that
would invalidate the boot trace. )
-config TRACE_UNLIKELY_PROFILE
+config TRACE_BRANCH_PROFILING
bool "Trace likely/unlikely profiler"
depends on DEBUG_KERNEL
select TRACING
@@ -175,7 +175,7 @@
Say N if unsure.
-config TRACING_UNLIKELY
+config TRACING_BRANCHES
bool
help
Selected by tracers that will trace the likely and unlikely
@@ -183,10 +183,10 @@
profiled. Profiling the tracing infrastructure can only happen
when the likelys and unlikelys are not being traced.
-config UNLIKELY_TRACER
+config BRANCH_TRACER
bool "Trace likely/unlikely instances"
- depends on TRACE_UNLIKELY_PROFILE
- select TRACING_UNLIKELY
+ depends on TRACE_BRANCH_PROFILING
+ select TRACING_BRANCHES
help
This traces the events of likely and unlikely condition
calls in the kernel. The difference between this and the
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index c938d03..0087df7 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -11,9 +11,8 @@
endif
# If unlikely tracing is enabled, do not trace these files
-ifdef CONFIG_TRACING_UNLIKELY
-KBUILD_CFLAGS += '-Dlikely(x)=likely_notrace(x)'
-KBUILD_CFLAGS += '-Dunlikely(x)=unlikely_notrace(x)'
+ifdef CONFIG_TRACING_BRANCHES
+KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
endif
obj-$(CONFIG_FUNCTION_TRACER) += libftrace.o
@@ -31,6 +30,6 @@
obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o
obj-$(CONFIG_BOOT_TRACER) += trace_boot.o
obj-$(CONFIG_FUNCTION_RET_TRACER) += trace_functions_return.o
-obj-$(CONFIG_TRACE_UNLIKELY_PROFILE) += trace_unlikely.o
+obj-$(CONFIG_TRACE_BRANCH_PROFILING) += trace_unlikely.o
libftrace-y := ftrace.o
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d842db1..bad59d3 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -258,7 +258,7 @@
"sched-tree",
"ftrace_printk",
"ftrace_preempt",
-#ifdef CONFIG_UNLIKELY_TRACER
+#ifdef CONFIG_BRANCH_TRACER
"unlikely",
#endif
NULL
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 9635aa2..dccae63 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -468,7 +468,7 @@
TRACE_ITER_SCHED_TREE = 0x200,
TRACE_ITER_PRINTK = 0x400,
TRACE_ITER_PREEMPTONLY = 0x800,
-#ifdef CONFIG_UNLIKELY_TRACER
+#ifdef CONFIG_BRANCH_TRACER
TRACE_ITER_UNLIKELY = 0x1000,
#endif
};
@@ -530,7 +530,7 @@
preempt_enable_notrace();
}
-#ifdef CONFIG_UNLIKELY_TRACER
+#ifdef CONFIG_BRANCH_TRACER
extern int enable_unlikely_tracing(struct trace_array *tr);
extern void disable_unlikely_tracing(void);
static inline int trace_unlikely_enable(struct trace_array *tr)
@@ -552,6 +552,6 @@
static inline void trace_unlikely_disable(void)
{
}
-#endif /* CONFIG_UNLIKELY_TRACER */
+#endif /* CONFIG_BRANCH_TRACER */
#endif /* _LINUX_KERNEL_TRACE_H */
diff --git a/kernel/trace/trace_unlikely.c b/kernel/trace/trace_unlikely.c
index 7290e0e..856eb3b 100644
--- a/kernel/trace/trace_unlikely.c
+++ b/kernel/trace/trace_unlikely.c
@@ -15,7 +15,7 @@
#include <asm/local.h>
#include "trace.h"
-#ifdef CONFIG_UNLIKELY_TRACER
+#ifdef CONFIG_BRANCH_TRACER
static int unlikely_tracing_enabled __read_mostly;
static DEFINE_MUTEX(unlikely_tracing_mutex);
@@ -119,7 +119,7 @@
void trace_likely_condition(struct ftrace_likely_data *f, int val, int expect)
{
}
-#endif /* CONFIG_UNLIKELY_TRACER */
+#endif /* CONFIG_BRANCH_TRACER */
void ftrace_likely_update(struct ftrace_likely_data *f, int val, int expect)
{
