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Message-Id: <1339112785-21806-2-git-send-email-vnagarnaik@google.com>
Date: Thu, 7 Jun 2012 16:46:25 -0700
From: Vaibhav Nagarnaik <vnagarnaik@...gle.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Justin Teravest <teravest@...gle.com>,
David Sharp <dhsharp@...gle.com>, linux-kernel@...r.kernel.org,
Vaibhav Nagarnaik <vnagarnaik@...gle.com>
Subject: [PATCH 2/2] tracing: Cleanup unnecessary function declarations
The functions defined in include/trace/syscalls.h are not used directly
since struct ftrace_event_class was introduced. Remove them from the
header file and rearrange the ftrace_event_class declarations in
trace_syscalls.c.
Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@...gle.com>
---
include/trace/syscall.h | 21 --------------
kernel/trace/trace_syscalls.c | 61 +++++++++++++++++++---------------------
2 files changed, 29 insertions(+), 53 deletions(-)
diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index 0c95796..84bc419 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -31,25 +31,4 @@ struct syscall_metadata {
struct ftrace_event_call *exit_event;
};
-#ifdef CONFIG_FTRACE_SYSCALLS
-extern unsigned long arch_syscall_addr(int nr);
-extern int init_syscall_trace(struct ftrace_event_call *call);
-
-extern int reg_event_syscall_enter(struct ftrace_event_call *call);
-extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
-extern int reg_event_syscall_exit(struct ftrace_event_call *call);
-extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
-enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags,
- struct trace_event *event);
-enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags,
- struct trace_event *event);
-#endif
-
-#ifdef CONFIG_PERF_EVENTS
-int perf_sysenter_enable(struct ftrace_event_call *call);
-void perf_sysenter_disable(struct ftrace_event_call *call);
-int perf_sysexit_enable(struct ftrace_event_call *call);
-void perf_sysexit_disable(struct ftrace_event_call *call);
-#endif
-
#endif /* _TRACE_SYSCALL_H */
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 96fc733..72a5222 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -21,9 +21,6 @@ static int syscall_enter_register(struct ftrace_event_call *event,
static int syscall_exit_register(struct ftrace_event_call *event,
enum trace_reg type, void *data);
-static int syscall_enter_define_fields(struct ftrace_event_call *call);
-static int syscall_exit_define_fields(struct ftrace_event_call *call);
-
static struct list_head *
syscall_get_enter_fields(struct ftrace_event_call *call)
{
@@ -32,30 +29,6 @@ syscall_get_enter_fields(struct ftrace_event_call *call)
return &entry->enter_fields;
}
-struct trace_event_functions enter_syscall_print_funcs = {
- .trace = print_syscall_enter,
-};
-
-struct trace_event_functions exit_syscall_print_funcs = {
- .trace = print_syscall_exit,
-};
-
-struct ftrace_event_class event_class_syscall_enter = {
- .system = "syscalls",
- .reg = syscall_enter_register,
- .define_fields = syscall_enter_define_fields,
- .get_fields = syscall_get_enter_fields,
- .raw_init = init_syscall_trace,
-};
-
-struct ftrace_event_class event_class_syscall_exit = {
- .system = "syscalls",
- .reg = syscall_exit_register,
- .define_fields = syscall_exit_define_fields,
- .fields = LIST_HEAD_INIT(event_class_syscall_exit.fields),
- .raw_init = init_syscall_trace,
-};
-
extern struct syscall_metadata *__start_syscalls_metadata[];
extern struct syscall_metadata *__stop_syscalls_metadata[];
@@ -432,7 +405,7 @@ void unreg_event_syscall_exit(struct ftrace_event_call *call)
mutex_unlock(&syscall_trace_lock);
}
-int init_syscall_trace(struct ftrace_event_call *call)
+static int init_syscall_trace(struct ftrace_event_call *call)
{
int id;
int num;
@@ -457,6 +430,30 @@ int init_syscall_trace(struct ftrace_event_call *call)
return id;
}
+struct trace_event_functions enter_syscall_print_funcs = {
+ .trace = print_syscall_enter,
+};
+
+struct trace_event_functions exit_syscall_print_funcs = {
+ .trace = print_syscall_exit,
+};
+
+struct ftrace_event_class event_class_syscall_enter = {
+ .system = "syscalls",
+ .reg = syscall_enter_register,
+ .define_fields = syscall_enter_define_fields,
+ .get_fields = syscall_get_enter_fields,
+ .raw_init = init_syscall_trace,
+};
+
+struct ftrace_event_class event_class_syscall_exit = {
+ .system = "syscalls",
+ .reg = syscall_exit_register,
+ .define_fields = syscall_exit_define_fields,
+ .fields = LIST_HEAD_INIT(event_class_syscall_exit.fields),
+ .raw_init = init_syscall_trace,
+};
+
unsigned long __init __weak arch_syscall_addr(int nr)
{
return (unsigned long)sys_call_table[nr];
@@ -535,7 +532,7 @@ static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
}
-int perf_sysenter_enable(struct ftrace_event_call *call)
+static int perf_sysenter_enable(struct ftrace_event_call *call)
{
int ret = 0;
int num;
@@ -556,7 +553,7 @@ int perf_sysenter_enable(struct ftrace_event_call *call)
return ret;
}
-void perf_sysenter_disable(struct ftrace_event_call *call)
+static void perf_sysenter_disable(struct ftrace_event_call *call)
{
int num;
@@ -611,7 +608,7 @@ static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
}
-int perf_sysexit_enable(struct ftrace_event_call *call)
+static int perf_sysexit_enable(struct ftrace_event_call *call)
{
int ret = 0;
int num;
@@ -632,7 +629,7 @@ int perf_sysexit_enable(struct ftrace_event_call *call)
return ret;
}
-void perf_sysexit_disable(struct ftrace_event_call *call)
+static void perf_sysexit_disable(struct ftrace_event_call *call)
{
int num;
--
1.7.7.3
--
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