tracing: Remove show_format and related macros from TRACE_EVENT

The previous patches added the use of print_fmt string and changes
the trace_define_field() function to also create the fields and
format output for the event format files.

   text	   data	    bss	    dec	    hex	filename
5857201	1355780	9336808	16549789	 fc879d	vmlinux
5884589	1351684	9337896	16574169	 fce6d9	vmlinux-orig

The above shows the size of the vmlinux after this patch set
compared to the vmlinux-orig which is before the patch set.

This saves us 27k on text, 1k on bss and adds just 4k of data.

The total savings of 24k in size.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
LKML-Reference: <4B273D4D.40604@cn.fujitsu.com>
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 0 insertions, 66 deletions

diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index a78e86349ecb..49cea70fbf6d 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -143,54 +143,6 @@ extern char *__bad_type_size(void);
                 #type, #name, offsetof(typeof(trace), name),            \
                 sizeof(trace.name), is_signed_type(type)
 
-int syscall_enter_format(struct ftrace_event_call *call, struct trace_seq *s)
-{
-        int i;
-        int ret;
-        struct syscall_metadata *entry = call->data;
-        struct syscall_trace_enter trace;
-        int offset = offsetof(struct syscall_trace_enter, args);
-
-        ret = trace_seq_printf(s, "\tfield:%s %s;\toffset:%zu;\tsize:%zu;"
-                               "\tsigned:%u;\n",
-                               SYSCALL_FIELD(int, nr));
-        if (!ret)
-                return 0;
-
-        for (i = 0; i < entry->nb_args; i++) {
-                ret = trace_seq_printf(s, "\tfield:%s %s;", entry->types[i],
-                                        entry->args[i]);
-                if (!ret)
-                        return 0;
-                ret = trace_seq_printf(s, "\toffset:%d;\tsize:%zu;"
-                                       "\tsigned:%u;\n", offset,
-                                       sizeof(unsigned long),
-                                       is_signed_type(unsigned long));
-                if (!ret)
-                        return 0;
-                offset += sizeof(unsigned long);
-        }
-
-        trace_seq_puts(s, "\nprint fmt: \"");
-        for (i = 0; i < entry->nb_args; i++) {
-                ret = trace_seq_printf(s, "%s: 0x%%0%zulx%s", entry->args[i],
-                                        sizeof(unsigned long),
-                                        i == entry->nb_args - 1 ? "" : ", ");
-                if (!ret)
-                        return 0;
-        }
-        trace_seq_putc(s, '"');
-
-        for (i = 0; i < entry->nb_args; i++) {
-                ret = trace_seq_printf(s, ", ((unsigned long)(REC->%s))",
-                                       entry->args[i]);
-                if (!ret)
-                        return 0;
-        }
-
-        return trace_seq_putc(s, '\n');
-}
-
 static
 int  __set_enter_print_fmt(struct syscall_metadata *entry, char *buf, int len)
 {
@@ -252,24 +204,6 @@ static void free_syscall_print_fmt(struct ftrace_event_call *call)
                 kfree(call->print_fmt);
 }
 
-int syscall_exit_format(struct ftrace_event_call *call, struct trace_seq *s)
-{
-        int ret;
-        struct syscall_trace_exit trace;
-
-        ret = trace_seq_printf(s,
-                               "\tfield:%s %s;\toffset:%zu;\tsize:%zu;"
-                               "\tsigned:%u;\n"
-                               "\tfield:%s %s;\toffset:%zu;\tsize:%zu;"
-                               "\tsigned:%u;\n",
-                               SYSCALL_FIELD(int, nr),
-                               SYSCALL_FIELD(long, ret));
-        if (!ret)
-                return 0;
-
-        return trace_seq_printf(s, "\nprint fmt: \"0x%%lx\", REC->ret\n");
-}
-
 int syscall_enter_define_fields(struct ftrace_event_call *call)
 {
         struct syscall_trace_enter trace;