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tracing/filters: Add __field_ext() to TRACE_EVENT

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Add __field_ext(), so a field can be assigned to a specific
filter_type, which matches a corresponding filter function.

For example, a later patch will allow this:
	__field_ext(const char *, str, FILTER_PTR_STR);

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A7B9272.6050709@cn.fujitsu.com>

[
  Fixed a -1 to FILTER_OTHER
  Forward ported to latest kernel.
]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Li Zefan
2009-08-07 10:33:22 +08:00
committed by Steven Rostedt
parent aa38e9fc3e
commit 43b51ead3f
6 changed files with 49 additions and 22 deletions
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6
kernel/trace/trace_syscalls.c
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@@ -194,7 +194,8 @@ int syscall_enter_define_fields(struct ftrace_event_call *call)
for (i = 0; i < meta->nb_args; i++) {
ret = trace_define_field(call, meta->types[i],
meta->args[i], offset,
sizeof(unsigned long), 0);
sizeof(unsigned long), 0,
FILTER_OTHER);
offset += sizeof(unsigned long);
}
@@ -210,7 +211,8 @@ int syscall_exit_define_fields(struct ftrace_event_call *call)
if (ret)
return ret;
ret = trace_define_field(call, SYSCALL_FIELD(unsigned long, ret), 0);
ret = trace_define_field(call, SYSCALL_FIELD(unsigned long, ret), 0,
FILTER_OTHER);
return ret;
}