[PATCH] perf events: remove CONFIG_EVENT_PROFILE

From: Li Zefan
Date: Mon Dec 21 2009 - 01:28:00 EST

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Quoted from Ingo:

| This reminds me - i think we should eliminate CONFIG_EVENT_PROFILE -
| it's an unnecessary Kconfig complication. If both PERF_EVENTS and
| EVENT_TRACING is enabled we should expose generic tracepoints.
|
| Nor is it limited to event 'profiling', so it has become a misnomer as
| well.

Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
---
include/linux/ftrace_event.h | 2 +-
include/linux/perf_event.h | 2 +-
include/linux/syscalls.h | 4 ++--
include/trace/ftrace.h | 12 ++++++------
include/trace/syscall.h | 4 ++--
init/Kconfig | 13 -------------
kernel/perf_event.c | 4 ++--
kernel/trace/Makefile | 4 +++-
kernel/trace/trace_events_filter.c | 4 ++--
kernel/trace/trace_kprobe.c | 14 +++++++-------
kernel/trace/trace_syscalls.c | 5 ++---
11 files changed, 28 insertions(+), 40 deletions(-)

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 2233c98..0a09e75 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -188,7 +188,7 @@ do { \
__trace_printk(ip, fmt, ##args); \
} while (0)

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS
struct perf_event;
extern int ftrace_profile_enable(int event_id);
extern void ftrace_profile_disable(int event_id);
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index c66b34f..792f8d0 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -658,7 +658,7 @@ struct perf_event {

perf_overflow_handler_t overflow_handler;

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_EVENT_TRACING
struct event_filter *filter;
#endif

diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 65793e9..b7c7fcf 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -99,7 +99,7 @@ struct perf_event_attr;
#define __SC_TEST5(t5, a5, ...) __SC_TEST(t5); __SC_TEST4(__VA_ARGS__)
#define __SC_TEST6(t6, a6, ...) __SC_TEST(t6); __SC_TEST5(__VA_ARGS__)

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS

#define TRACE_SYS_ENTER_PROFILE_INIT(sname) \
.profile_enable = prof_sysenter_enable, \
@@ -113,7 +113,7 @@ struct perf_event_attr;
#define TRACE_SYS_ENTER_PROFILE_INIT(sname)
#define TRACE_SYS_EXIT_PROFILE(sname)
#define TRACE_SYS_EXIT_PROFILE_INIT(sname)
-#endif
+#endif /* CONFIG_PERF_EVENTS */

#ifdef CONFIG_FTRACE_SYSCALLS
#define __SC_STR_ADECL1(t, a) #a
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 7352315..2fdd36d 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -498,7 +498,7 @@ static inline int ftrace_get_offsets_##call( \

#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS

/*
* Generate the functions needed for tracepoint perf_event support.
@@ -541,7 +541,7 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\

#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)

-#endif
+#endif /* CONFIG_PERF_EVENTS */

/*
* Stage 4 of the trace events.
@@ -626,7 +626,7 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
*
*/

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS

#define _TRACE_PROFILE_INIT(call) \
.profile_enable = ftrace_profile_enable_##call, \
@@ -634,7 +634,7 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\

#else
#define _TRACE_PROFILE_INIT(call)
-#endif
+#endif /* CONFIG_PERF_EVENTS */

#undef __entry
#define __entry entry
@@ -834,7 +834,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
* }
*/

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS

#undef __perf_addr
#define __perf_addr(a) __addr = (a)
@@ -926,7 +926,7 @@ static void ftrace_profile_##call(proto) \
DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))

#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#endif /* CONFIG_EVENT_PROFILE */
+#endif /* CONFIG_PERF_EVENTS */

#undef _TRACE_PROFILE_INIT

diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index 961fda3..3d463dc 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -49,12 +49,12 @@ ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);
enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
#endif
-#ifdef CONFIG_EVENT_PROFILE
+
+#ifdef CONFIG_PERF_EVENTS
int prof_sysenter_enable(struct ftrace_event_call *call);
void prof_sysenter_disable(struct ftrace_event_call *call);
int prof_sysexit_enable(struct ftrace_event_call *call);
void prof_sysexit_disable(struct ftrace_event_call *call);
-
#endif

#endif /* _TRACE_SYSCALL_H */
diff --git a/init/Kconfig b/init/Kconfig
index a23da9f..06dab27 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -966,19 +966,6 @@ config PERF_EVENTS

Say Y if unsure.

-config EVENT_PROFILE
- bool "Tracepoint profiling sources"
- depends on PERF_EVENTS && EVENT_TRACING
- default y
- help
- Allow the use of tracepoints as software performance events.
-
- When this is enabled, you can create perf events 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.)
-
config PERF_COUNTERS
bool "Kernel performance counters (old config option)"
depends on HAVE_PERF_EVENTS
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index e0eb4a2..7dde229 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -4176,7 +4176,7 @@ static const struct pmu perf_ops_task_clock = {
.read = task_clock_perf_event_read,
};

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_EVENT_TRACING

void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
int entry_size)
@@ -4281,7 +4281,7 @@ static void perf_event_free_filter(struct perf_event *event)
{
}

-#endif /* CONFIG_EVENT_PROFILE */
+#endif /* CONFIG_EVENT_TRACING */

#ifdef CONFIG_HAVE_HW_BREAKPOINT
static void bp_perf_event_destroy(struct perf_event *event)
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index cd9ecd8..d00c6fe 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -51,7 +51,9 @@ endif
obj-$(CONFIG_EVENT_TRACING) += trace_events.o
obj-$(CONFIG_EVENT_TRACING) += trace_export.o
obj-$(CONFIG_FTRACE_SYSCALLS) += trace_syscalls.o
-obj-$(CONFIG_EVENT_PROFILE) += trace_event_profile.o
+ifeq ($(CONFIG_PERF_EVENTS),y)
+obj-$(CONFIG_EVENT_TRACING) += trace_event_profile.o
+endif
obj-$(CONFIG_EVENT_TRACING) += trace_events_filter.o
obj-$(CONFIG_KPROBE_EVENT) += trace_kprobe.o
obj-$(CONFIG_KSYM_TRACER) += trace_ksym.o
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 50504cb..74563d7 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1360,7 +1360,7 @@ out_unlock:
return err;
}

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS

void ftrace_profile_free_filter(struct perf_event *event)
{
@@ -1428,5 +1428,5 @@ out_unlock:
return err;
}

-#endif /* CONFIG_EVENT_PROFILE */
+#endif /* CONFIG_PERF_EVENTS */

diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 375f81a..75d75de 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1249,7 +1249,7 @@ static int kretprobe_event_show_format(struct ftrace_event_call *call,
", REC->" FIELD_STRING_RETIP);
}

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS

/* Kprobe profile handler */
static __kprobes int kprobe_profile_func(struct kprobe *kp,
@@ -1407,7 +1407,7 @@ static void probe_profile_disable(struct ftrace_event_call *call)
disable_kprobe(&tp->rp.kp);
}
}
-#endif /* CONFIG_EVENT_PROFILE */
+#endif /* CONFIG_PERF_EVENTS */

static __kprobes
@@ -1417,10 +1417,10 @@ int kprobe_dispatcher(struct kprobe *kp, struct pt_regs *regs)

if (tp->flags & TP_FLAG_TRACE)
kprobe_trace_func(kp, regs);
-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS
if (tp->flags & TP_FLAG_PROFILE)
kprobe_profile_func(kp, regs);
-#endif /* CONFIG_EVENT_PROFILE */
+#endif
return 0; /* We don't tweek kernel, so just return 0 */
}

@@ -1431,10 +1431,10 @@ int kretprobe_dispatcher(struct kretprobe_instance *ri, struct pt_regs *regs)

if (tp->flags & TP_FLAG_TRACE)
kretprobe_trace_func(ri, regs);
-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS
if (tp->flags & TP_FLAG_PROFILE)
kretprobe_profile_func(ri, regs);
-#endif /* CONFIG_EVENT_PROFILE */
+#endif
return 0; /* We don't tweek kernel, so just return 0 */
}

@@ -1463,7 +1463,7 @@ static int register_probe_event(struct trace_probe *tp)
call->regfunc = probe_event_enable;
call->unregfunc = probe_event_disable;

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS
call->profile_enable = probe_profile_enable;
call->profile_disable = probe_profile_disable;
#endif
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 75289f3..f694f66 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -421,7 +421,7 @@ int __init init_ftrace_syscalls(void)
}
core_initcall(init_ftrace_syscalls);

-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS

static DECLARE_BITMAP(enabled_prof_enter_syscalls, NR_syscalls);
static DECLARE_BITMAP(enabled_prof_exit_syscalls, NR_syscalls);
@@ -626,6 +626,5 @@ void prof_sysexit_disable(struct ftrace_event_call *call)
mutex_unlock(&syscall_trace_lock);
}

-#endif
-
+#endif /* CONFIG_PERF_EVENTS */

--
1.6.3

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Next message: Paul Mundt: "Re: [PATCH] Drop 80-character limit in checkpatch.pl"
Previous message: Li Zefan: "[PATCH] tracing: Make the documentation clear on trace_event bootoption"
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