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tracing: Use a global field list for all syscall exit events

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All syscall exit events have the same fields.

The kernel size drops 2.5K:

   text    data     bss     dec     hex filename
7018612 2034376 7251132 16304120         f8c7f8 vmlinux.o.orig
7018612 2031888 7251132 16301632         f8be40 vmlinux.o

Signed-off-by: Li Zefan <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
This commit is contained in:
Li Zefan 2010-05-24 16:22:30 +08:00 • committed by Steven Rostedt
commit c9642c49aa
3 changed files with 4 additions and 6 deletions
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7
kernel/trace/trace_syscalls.c
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@ -23,6 +23,9 @@ static int syscall_exit_register(struct ftrace_event_call *event,
static int syscall_enter_define_fields(struct ftrace_event_call *call);
static int syscall_exit_define_fields(struct ftrace_event_call *call);
/* All syscall exit events have the same fields */
static LIST_HEAD(syscall_exit_fields);
static struct list_head *
syscall_get_enter_fields(struct ftrace_event_call *call)
{
@ -34,9 +37,7 @@ syscall_get_enter_fields(struct ftrace_event_call *call)
static struct list_head *
syscall_get_exit_fields(struct ftrace_event_call *call)
{
struct syscall_metadata *entry = call->data;
return &entry->exit_fields;
return &syscall_exit_fields;
}
struct trace_event_functions enter_syscall_print_funcs = {