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tracing: Have syscall tracing call its own init function

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In the clean up of having all events call one specific function,
the syscall event init was changed to call this helper function.

With the new print_fmt updates, the syscalls need to do special
initializations. This patch converts the syscall events to call
its own init function again.

Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2009-12-28 21:13:59 -05:00 committed by Steven Rostedt
parent a342a0280b
commit c7ef3a9004
2 changed files with 8 additions and 8 deletions
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4
include/linux/syscalls.h
View file

@ -143,7 +143,7 @@ struct perf_event_attr;
.name = "sys_enter"#sname, \
.system = "syscalls", \
.event = &enter_syscall_print_##sname, \
.raw_init = trace_event_raw_init, \
.raw_init = init_syscall_trace, \
.show_format = syscall_enter_format, \
.define_fields = syscall_enter_define_fields, \
.regfunc = reg_event_syscall_enter, \
@ -165,7 +165,7 @@ struct perf_event_attr;
.name = "sys_exit"#sname, \
.system = "syscalls", \
.event = &exit_syscall_print_##sname, \
.raw_init = trace_event_raw_init, \
.raw_init = init_syscall_trace, \
.show_format = syscall_exit_format, \
.define_fields = syscall_exit_define_fields, \
.regfunc = reg_event_syscall_exit, \

12
kernel/trace/trace_syscalls.c
View file

@ -450,14 +450,14 @@ int init_syscall_trace(struct ftrace_event_call *call)
if (set_syscall_print_fmt(call) < 0)
return -ENOMEM;
id = register_ftrace_event(call->event);
if (!id) {
id = trace_event_raw_init(call);
if (id < 0) {
free_syscall_print_fmt(call);
return -ENODEV;
return id;
}
call->id = id;
INIT_LIST_HEAD(&call->fields);
return 0;
return id;
}
int __init init_ftrace_syscalls(void)